Chevrolet Captiva

Chevrolet CaptivaModel Introduction Training For Approved Motor Body Repairers

The new Captiva is the first product to be designed and developed by Chevrolet for the European market.

Its sleek yet bold design is accentuated by strong wheel arches and a sweeping feature line that runs from the front fender vent through to the tail lamps. The wide tailgate with its integrated opening win-

dow underlines the practical side of the Captiva.

Value for money to the customer is key yet levels of specification are comprehensive on all derivatives, i.e front and curtain airbags are

standard across the range.

CONTENTS

Note

GENERAL

BODY

SUSPENSION and STEERING

ELECTRICAL

4

12

30

34

42RESTRAINT SYSTEM

48ALL WHEEL DRIVE

This self-study programme highlights the design and function of new vehicle models, new automotive components or new technologies.

The self-study programme is not a repair manual!All values given are intended as a guideline only.

For maintenance and repair work, always refer to the current technical literature.

© 2008 General Motors Corporation. All rights reserved.

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Exterior Dimensions

The Captiva measures 4,635/1,850/1,720mm (length/width/height) and stands on a wheelbase of 2,705mm. In five passenger configuration, it offers a trunk volume of 405 litres. All seats, including the front passenger seat, can be folded forward and down, achieving a flat surface. It offers plenty of storage space, including a wide net below the instrument panel.

General


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TRAINING

Weights and Capacities

Curb weight (with driver)

Engine Transmission Weight

Z24SEDManual Transmission 1.730 - 1,815 (5 seater) 1,760 - 1,845 (seven seater)

Automatic Transmission Still awaiting release

Z32SEDManual Transmission Still awaiting release


Gross vehicle weight

Z24SEDManual Transmission 2,180 (5 seater) 2,320 (seven seater)


Z32SEDManual Transmission Still awaiting release


Item Capacity Classification

Fuel 65.0 litres RON 95 or higher/Diesel

Engine oil (inc. oil filter) Z24SED 4.5 litres API SL (ILSAC GF-III) gradeSAE 5W-30Hot area: SAE 10W-30

Z32SED 7.4 litres API SJ (ACEA A1) gradeSAE 0W-30

Z20DTH 6.5 litres Still awaiting release

Engine coolant 9.0 litres Dex-cool coolant

Automatic transaxle fluid 6.85 +- 0.15 litres JWS 3309 US ATF

Manual transaxle fluid FWD 2.1 litresSAE 75W-90

AWD 2.3 litres

Brake fluid 0.67 litresDOT 4

Clutch fluid 0.06 litres

Power steering fluid 1.1 litres DEXRON II D or DEXRON III

Transfer case fluid AWD 0.8 +- 0.1 litresSynthetic Hypoid 75W-90

Differential carrier fluid AWD 0.6 +- 0.1 litres

General


6

TRAINING

Chassis

The Captiva has an all new fully independent front and rear suspension with McPherson strut assem-blies at the front and a multi-link suspension type at the rear. An optional automatic Self Leveliser System can be fitted at the rear to ensure a correct body height at all loads.Power assisted steering is standard and a Speed Sensitive Power Steering is available as an optional extra.

Wheels

The four cylinder derivatives come standard with 215/70R16 tyres on 6.5Jx16 inch wheels.The V6 derivatives come standard 235/60R17 tyres on 7.0Jx17 inch wheels.

Front suspension type McPherson strut

Rear suspension type Four link

Alignment (unloaded) Camber Front:

- 0.55o +- 0.75o

Rear: - 0.35o +- 0.5o

Castor 2.18o +- 0.73o

Toe-in Front 0.1o +- 0.08o

Rear 0.09o +- 0.1o

Steering Type Power assisted rack and pinion

Overall gear ratio 18.5 : 1

Steering wheel diameter (mm) 390

Minimum turning radius (m) 5.75

Tyre size Wheel dimension Tyre pressure (F/R) in bar

Tyre pressure (F/R) in psi (loaded)

16” wheel 215/70 R16 6.5J x 16

2.1/2.1 2.3/2.417” wheel 235/60 R17 7J x 17

18” wheel 235/55 R18 7J x 18

Emergency spare tyre T155/90 R16 4T x 16 0.6/0.6

General


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Engine and Transmission

Initially, three transversally mounted engines will be available for the Captiva.

The first is the brand new, state-of-the-art GM common rail diesel engine (Z20DTH). The 16 valve unit offers 110 kW (150 hp) at 4,000 rpm and maximum torque of 316 Nm at 2,000 rpm. The combined fuel consumption is 7.6 l per 100 km.

The 2.4 litre gasoline engine (Z24SED) is an in-line DOHC four cylinder, delivering 104 kW (142 hp) at 5,200 rpm and a torque maximum of 224 Nm at 4,000 rpm. Its average fuel consumption is 9.9 l per 100 km.

Engine Z24SED Z32SED Z20DTH

Fuel Petrol petrol diesel

Type 4-cylinder / in-line 6-cylinder / V 4 cylinder / in-line

Displacement (cc) 2.405 3.195 1.991

Bore x stroke (mm) 87 x 100.0 89 x 85.6 83 x 92.0

Compression ratio 9.6 : 1 10.2 : 1 17.5 : 1

Max. power (kW/rpm) 100/5,000 165/6,000 110/4,000

Max. torque (Nm/rpm) 220/2,200 308/3,500 310/2,000

Fuel system Multi-point injection Multi-point injection High pressure Direct injection

The top-of-the-line 3.2 litre V6 engine (Z32SED) produces 165 kW (225 hp) at 6,000 rpm with a maximum torque of 308 Nm at 3,500 rpm. Its combined fuel consumption is 11.7 l per 100 km.

All engines are standard equipped with a five speed manual transmission. An optional five speed automatic transmission is also available

General


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Vehicle Identification

The vehicle identification number (VIN) is attached to the top of the front panel support.

The vehicle identification number (VIN) is also engraved in the top right side of the bulkhead.

General


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Body Identification Number Plate

The vehicle identification number plate is attached to the top of the front panel support.

1. P/O Number

2. Check digit

3. Drive

4. Body type

5. Production month

6. Production date

7. Sequential Number

8. Trunk lid

9. Exterior colour

10. Export country

11. Car type

General


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Diagnostic Link Connector

The Diagnostic Link Connector is located under the instrument panel near to the A-column at the driver side.

Engine oil life system

The vehicle engine oil life system informs when to change the engine oil. Based on driving conditions, the mileage at which an oil change will be indi-cated can vary considerably. For the oil life system to work properly, reset the system every time the oil is changed.

Resetting the Engine Oil Life System

The Engine Oil Life System calculates when to change the engine oil and filter based on vehicle use. Anytime the engine oil is changed, reset the system so it can calculate when the next oil change is required. To reset the Engine Oil Life System, do the following:

1. Turn the ignition key to ON with the engine

OFF.

2. Fully press and release the accelerator pedal

three times within five seconds.

3. Turn the key to LOCK.

General


11

TRAININGGeneral

Notes


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TRAINING

Many innovations have been integrated in the Cap-tiva’s body structure to obtain a high degree of occupant safety, and also to protect pedestrians against severe injuries in case of unfortunate colli-sions.

Crumple zones

To accommodate the impact energy in case of a crash, the front, sides and rear of the passenger compartment are surrounded by crumple zones that deform and protect in a controlled manner.

At both front and rear of the vehicle, crash boxes have been integrated to absorb impact energy at an early stage of a collision.At the front these crash boxes can be replaced separately but at the rear they are part of the longi-tudinal chassis beams.

At higher impact speeds, the deformation energy is transferred to the front frame in a defined manner.

In frontal impacts, the impact energy is distributed through three load paths:

● Upper load path

● Middle load path

● Lower load path via the hydro-formed sub-frame

In a frontal collision, the separate steering column cross member and a collapsible column design limit the penetration of the steering wheel into the pas-

senger compartment. This also ensures the correct airbag position.

The side doors are reinforced with side-impact beams, creating a rigid profile at waist level. Together with the high strength steel “B”-pillars and the large-dimensioned rocker sills, the penetra-tion of the doors in side impacts is reduced, thus providing a protective cage around the passenger compartment. Energy-absorbing padding on the inside of the doors further increases occupant pro-tection.

In the event of a rear-end collision, several struc-tural measures to protect the vehicle occupants are brought to bear, including:

● The steel bumper cross member, which is securely connected to the rear end structure, absorbs impact energy in smaller collisions and reduces repair costs.

● The rear frames are reinforced and pass on the impact forces below the passenger compartment. An additional load deflection route is built up over the wheels.

● The fuel system is properly located in a safe area in front of the rear axle.

Body


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Pedestrian Protection

Absorbing material in the front bumper and struc-tural design of the front facia and hood minimise pedestrian injury in case of a collision.

For example, the retaining brackets of the head-lamps are flexible and absorb a high amount of energy. The hood incorporates crumple zones that deform and absorb energy when the pedestrian hits the vehicle.

This has been tested using weights and forms rep-resenting the pedestrian.

Use of new materials

The requirement for reduced body weight has lead to a reduction in the amount of steel used, e.g. through the use of thinner sheet steels.This has been achieved with high strength sheet steels, in spite of the need to meet higher body strength requirements at the same time. High strength steels have a tensile strength and yield strength as much as 30% higher than con-ventional steel. These properties must not be destroyed when carrying out repairs, e.g. by using excessive heat.

The zinc plated steel plate used in some panels of the vehicle requires different repair techniques than ordinary steel plate.Take the following precautions when repairing zinc plated steel:

● Before spot welding the zinc plated steel plate, remove the paint from both sides of the flange to be welded. Apply sealer to the flange after welding.

● The electric continuity properties of zinc plated steel plate are different from ordinary steel plate. When spot welding, increase the current by 10-20% or increase the resistance welding time. Also increase the number of weld spots by 10-20%.

The MIG welding procedures for zinc plated steel plate are the same as for ordinary steel plate.

● Before applying putty or body filler to the zinc plated steel plate, sand the zinc plating thoroughly to promote adhesion and prevent blistering.

Use only epoxy-based puttees and fillers on zinc plated steel plate.

Body

Note

Note


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Seven seat concept

To tilt the second row seatbacks, lift the lever on top of the seat-back until the seatback is adjusted to the desired position.

With the same lever, the second row seatbacks can be folded down separately. Make sure that the headrests are fully down when doing so.

To enter the 3rd row seating, the second row seats have to be tumbled. To do so make sure the second row seatbacks are in the non-reclined position. Use the han-dle on the outside of the second row seatbacks to fold down the seatback. The seat will tumble forward automatically and air-pressurised support rods will hold the seats folded.

The 3rd row seats can be folded by lifting the lever at the back of the 3rd row seatback.

Once the second and third row are folded down and the passenger seat has been folded down a maximum flat loading surface is available.

The two outboard positions at the second row seats are equipped with an isofix child seat restraint system.

Body

1. Isofix allowed positions at second row seats

2. Isofix attachment indications

3. Isofix top tether anchors


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TRAINING

Power sunroof

The power sunroof is an optional item.

Next to the fully open and closed function it incor-porates a tilt function. A retractable sunshade pro-tects the occupants from unwanted sun radiation when the glass roof is closed.

The Sunroof Control Module has been designed to memorise closing and opening steps. A loss of the memorised positioning data can occur when the operating current increases above the maximum operating current of 3.5 - 4.0 Ampere. This is the case when for example foreign material is on the sunroof guide rail or an object blocks the sunroof closing during operation.

Once the roof has been checked and released from blocking objects or foreign material the sunroof can be re-calibrated by following the next proce-dure:

1. Press the switch in the rearward direction until

the sunroof tilts open. Release the switch when

the sunroof has fully opened. If the sunroof

opens slightly and stops, release and then press

the switch and hold it. Repeat these steps until

the sunroof opens fully.

2. Press the switch in a forward direction until the

sunroof closes fully.

3. Press the switch in a rearward direction until the

sunroof opens for 15 seconds.

4. Confirm the re-calibration procedure by

performing the sunroof opening and closing

operation.

Body

1. Sunroof control module

2. Sunroof motor

Body


16

TRAINING Body

Perform the following steps before beginning any vehicle lifting or jacking procedure:

● Remove or secure all of the vehicle's contents in order to avoid any shifting or any movement that may occur during the vehicle lifting or jacking procedure.

● The lifting equipment or the jacking equipment weight rating must meet or exceed the weight of the vehicle and any vehicle contents.

● The lifting equipment or the jacking equipment must meet the operational standards of the lifting equipment or jacking equipment's manufacturer.

● Perform the vehicle lifting or jacking procedure on a clean, hard, dry, level surface.

● Perform the vehicle lifting or jacking procedure only at the identified lift points. DO NOT allow the lifting equipment or jacking equipment to contact any other vehicle components.

Lifting and Jacking the Vehicle

To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

To avoid any vehicle damage, serious personal injury or death, always use the jack stands to support the vehicle when lifting the vehicle with a jack.

Note

Note

1. Frame Contact Lift - Front2. Frame Contact Lift - Rear


17

TRAINING

Front Bumper Fascia Energy Absorber Replacement

Removal Procedure

1. Remove the front bumper fascia.

2. Remove the retaining clips on the energy absorber.

3. Remove the upper and lower energy absorbers from the front fascia.

Body

Installation Procedure

1. Install the upper and lower energy absorbers to the front fascia.

2. Install the retaining clips to the energy absorbers.

3. Install the front bumper fascia.


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Tie Bar Replacement

Removal Procedure

1. Disable the supplemental inflatable restraint (SIR) system.

2. Disconnect the negative battery cable.

3. Remove all related panels and components.

4. Repair as much of the damage as possible to factory specifications.

5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary.

6. Locate and drill out all factory welds.

Note the number and location of the welds for installation of the tie bar assembly.

7. Remove the damaged tie bar assembly.

Body

Note

Note

Note


If the location of the original plug weld holes can not be determined, space the plug weld holes every 40 mm (1 1/2 in) apart.

Some panels may have structural weld-thru adhesive. It is necessary to replace the weld-thru adhesive with an additional spot weld between each factory spot weld.

1. Drill 8-mm (5/16-in) plug weld holes in the

service part as necessary in the locations noted

from the original panel.

2. Prepare all mating surfaces as necessary.

3. Apply 3M Weld-Thru Coating P/N 05916 or

equivalent to all mating surfaces.


19

TRAINING

4. Position the tie bar assembly to the vehicle using 3-dimensional measuring equipment. Clamp the tie bar assembly into place.

5. Plug weld accordingly.

6. Apply the sealers and anti-corrosion materials to the repair area, as necessary.

7. Clean and prepare all welded surfaces.

8. Paint the repair area.

9. Install all related panels and components.

10. Connect the negative battery cable.

11. Enable the SIR system.

Body


20

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Front Compartment Upper Side Rail Replacement

Body

Removal Procedure






Do not damage any inner panels or rein-forcements.

6. Locate and drill out all factory welds. Note the number and location of the welds for installation of the front upper outer rail.

7. Remove the damaged front upper outer rail.




1. Drill 8-mm (5/16-in) plug weld holes in the serv-ice part as necessary in the locations noted from the original panel.

Note

Note

Note


21

TRAINING


3. Apply 3M Weld-Thru Coating P/N 05916 or equivalent to all mating surfaces.

4. Position the front upper outer rail to the vehicle using 3-dimensional measuring equipment. Clamp the front upper outer rail into place.








Body


22

TRAINING

Front Compartment Front Rail Replacement

Body

Removal Procedure







6. Locate and drill out all factory welds. Note the number and location of the welds for installation of the front lower rail.

7. Remove the damaged front lower rail.

Note


23

TRAINING







4. Position the front lower rail to the vehicle using 3-dimensional measuring equipment. Clamp the front lower rail into place.








Body

Note

Note


24

TRAINING

Body Rear End Panel Replacement

Removal Procedure







6. Locate and drill out all factory welds. Note the number and location of the welds for installation of the front lower rail.

7. Remove the damaged rear end panel.

Note

Body


25

TRAINING







4. Position the rear end panel to the vehicle using 3-dimensional measuring equipment. Clamp the rear end panel into place.








Body

Note

Note


26

TRAINING Body

Centre Pillar Sectioning





Foam sound deadeners must be removed from areas within 152.4 mm (6 in) of where flame is to be used for body repairs. When reinstalling foam sound deadeners, avoid inhaling fumes as bodily injury may result.


6. On the original outer door frame, measure down from the lower edge of the door opening 135 mm (5.3 in) (A) and mark a horizontal line.

Do NOT damage any inner panels or rein-forcements

7. Cut the panel where sectioning is to be per-formed

Note

Removal Procedure

Section in specified areas only. Sectioning outside of these areas may compromise the structural integrity of the vehicle. The door frame can be replaced at factory seams, but requires the removal of the windshield and the roof. The sectioning procedures have been developed as a more cost-effective alternative to complete replacement. The specific area to be sectioned is determined by the extent of the damage to the vehicle.

Note

Note


27

TRAININGBody

8. Locate and drill out all factory welds. Note the number and location of the welds for installa-tions of the service part.

9. Remove the damaged center pillar section.


1. Cut the replacement center pillar section in cor-responding locations to fit the original panel. The sectioning joint should be trimmed to allow 1½ times the metal thickness at the sectioning joint.

2. Create a 50-mm (2-in) backing plate (A) from the unused portion of the service part. Trim the backing plate as necessary to fit behind the sec-tioning joint where there is no reinforcement.


28

TRAINING

3. Drill 8-mm (5/16-in) plug weld holes along the sectioning cut on the remaining original part. Locate these holes 13 mm (1/2 in) from the edge and spaced 40 mm (1½ in) apart.

In any area damaged beyond recognition, or if structural Weld-Thru adhesive is present, space the plug weld holes 40 mm (1½ in) apart.

4. Drill 8-mm (5/16-in) plug weld holes in the serv-ice part as necessary in the locations noted from the original panel and along the sectioning cut.


6. Apply 3M® Weld-Thru coating P/N 05916 or equivalent, to all mating surfaces.

7. Fit the backing plate halfway into the sectioning joint, clamp and plug weld to the vehicle.

Body

Note


29

TRAINING

8. Position the center pillar.


To create a solid weld with minimum heat distortion make 25-mm (1-in) stitch welds along the seam with 25-mm (1-in) gaps between. Then go back and complete the stitch weld.

10. Stitch the weld sectioning joint.



13. Paint and repair the area.




Body

Note


30

TRAINING

Suspension

Being a Sports Utility Vehicle, the Chevrolet Cap-tiva has been engineered on an all new independ-ent front and rear suspension. A fully automatic Self Leveliser system is available as an option.

Front Suspension

1. Cradle type front suspension

2. Lower control arm

3. McPherson spring strut assembly

4. Stabiliser bar

5. Ventilated brake disc

6. Wheel hub assembly with integrated wheel

speed rotor

Suspension and Steering


31

TRAINING

Rear suspension

1. Multi linked suspension

2. Stabiliser bar

3. Ventilated brake disc

4. Wheel hub assembly with integrate wheel speed

rotor

5. Optional Self Leveliser shock absorber



32

TRAINING

Self Leveliser

The Self Leveliser is used to maintain a constant vehicle body height at the rear axle under various loading conditions. The Self Leveliser system con-sists of two rear shock absorbers with the inte-grated self leveliser function. It is a fully automatic system and has no electrical components.

Upon loading the vehicle, the body will lower according to the weight. As soon as the vehicle is driven, the pumping action of the shock absorbers starts to level the body. Upon unloading the vehi-cle, the body height regains its normal height with-out having to drive.

The Self Leveliser shock absorber is a closed and sealed unit and integrates the Self Leveliser func-tionality.

The Self Leveliser shock absorbers are not service repairable. Do not attempt to open or drill holes in the shock absorber. Always replace malfunctioning Self Leveliser shock absorbers as an assembly.

The Self Leveliser shock absorbers can be mounted as an Aftersales accessory.

1. Outlet valve

2. Pump chamber

3. Check valve

4. Pump tube

5. Height sensor

6. Pump rod seal

7. Pump rod

8. Diaphragm

9. Nitrogen gas

10. High pressure chamber

11. Low pressure chamber

12. Relief orifice

13. Piston valve

14. Nitrogen gas

15. Inlet valve

16. Main seal

17. Oil seal



33

TRAINING

Steering

The standard steering is of the rack and pinion type with hydraulic steering assist. Speed Sensi-tive Power Steering (SSPS) is available as an option.

In addition to the steering function, the steering column provides safety and security. The energy-absorbing column is designed to compress in a front-end collision to minimise the chance of driver injury.

The Speed Sensitive Power Steering (SSPS) sys-tem varies the driver effort required to steer as the vehicle speed changes. At low speeds, the system provides maximum power assist for easy turning and parking manoeuvres. At higher speeds, the amount of steering assist is reduced to provide the driver with firmer steering and directional stability.

1. Steering gear

2. Hydraulic power steering pump

3. Hydraulic fluid reservoir

4. Steering column

5. SSPS control module

6. SSPS actuator



34

TRAINING

CAN-Bus System

The extensive application on a CAN-Bus system in the Captiva has thrown the conventional function-ing of systems upside down. Although the differ-ent functioning of the CAN-Bus system may not be evident for a driver in everyday life, the way of thinking about the electrical system for the after-sales organisation must undergo changes to be able to understand and diagnose the system.

The exchange of information between control modules can be achieved using the following pos-sibilities:

1. Separate wires2. Data bus

Separate wires

Each piece of information is exchanged over a sep-arate wire

Disadvantage

● With an increasing quantity of information, the number of wires in the cable harness also increases, which increases the possibility of faults

Data bus

A data bus can be visualised as an ordinary coach. As a coach transports large quantities of people between several locations, the data bus transports large quantities of information between several control modules: data exchange. The exchange of data between the individual control modules lets the units operate as a functional system. The more information a control module has on the state of the total system, the better it can co-ordinate its individual functions.

Advantages

● Fewer sensors and signal wires due to multiple use of a sensor signal

● Fewer wires in the cable harness

● Considerable weight reduction in the wiring harness

● Fewer plug-in terminals in the control module connectors

● Improved reliability and serviceability

● Large variety of new comfort functions

Electrical

Separate wires Data bus


35

TRAINING

Engine compartment fuse block

The fuse block in the engine compartment is located next to the coolant reservoir. The fuse block is covered by a cap. On the inside of this cap, a reference of all fuses and relays of the fuse block is shown.

Electrical


36

TRAINING

Instrument Panel fuse block

The Instrument Panel (I/P) fuse block in the pas-senger compartment is located in the side of the centre console, near the foot well. The I/P fuse block is covered by a panel. On the inside of the panel, a reference of all visible fuses and relays of the fuse block is shown.

Only two relays are visible on the I/P fuse block, however the wiring diagram indicates many more relays located on the I/P fuse block. These relays are located inside the I/P fuse block on the internal switching unit.

Electrical


37

TRAINING

Grounding Points

When working on the vehicle electric system, either during troubleshooting sessions or when installing accessories, always be aware of the importance of the grounding points.An overview of the grounding points can be found in the workshop manual of the Captiva. The exact layout of all the grounding points depends on the engine type.

In the Captiva, two types of grounding points are used: ‘normal’ grounds and ground packs.

The ‘normal’ grounds are numbered G on the wir-ing diagram and the ground packs are number Gx.

There is also a difference in there appearance. The ‘normal’ grounds are connected to ground via an ordinary cable eye. The ground packs are con-nected to ground via a splice pack which connects several wires to ground.

Electrical

Grounding point

Grounding pack


38

TRAINING

Compass

The compass displays the vehicle’s driving direc-tion. Eight direction indications can be shown: N, NE, E, SE, S, SW, W, NW. Whenever the Driver Information Centre (fitted to instrument panel cen-tre consol) or the battery is disconnected, the com-pass must be recalibrated.

Compass Calibration

The compass can be calibrated following the pro-cedure below:

1. Press the MODE and SET button simultaneously for more than two seconds, the compass display flashes.

2. Drive the vehicle around slowly for 360o within 90 seconds. Or alternatively, drive the vehicle as shown in the next picture.

3. When the calibration is finished, the compass display does not flash anymore.

When the calibration procedure is not completed the compass will not function correctly.

Electrical


39

TRAINING

Remote Function Actuation receiver

The Remote Function Actuation (RFA) receiver communicates with the Body Control Module (BCM) through the CAN-bus. When a button on a transmitter is pressed, the transmitter sends a sig-nal to the RFA receiver. The RFA receiver sends a request to the BCM and the BCM performs the appropriate action.

The RFA receiver is located behind the A-pillar pan-elling at the driver’s side.

The RFA receiver is also called Remote Con-trol Door Lock Receiver (RCDLR) in the workshop manual.

Body Control Module

The Body Control Module (BCM) is of great impor-tance for the Captiva. It contains many functions which are crucial for correct operation of the vehi-cle. The BCM can be found in every Captiva and is located behind the instrument panel centre con-sole. By removing the Heating, Ventilation and Air Conditioning control panel the BCM is accessible.

Body Control Module functions

The BCM related systems include, but are not lim-ited to the following list:

● Chimes

● Content Theft Deterrent System

● Vehicle Theft Deterrent System (Immobilizer)

● Exterior Lighting System

● Interior Lighting System

● Remote Keyless Entry

● Wiper/Washer Control

● Power Door Locks

● Power Windows

Note

Electrical


40

TRAINING

Exterior lighting

The exteior lighing is controlled by the BCM and consists of the following lamps:

● Headlamps

● Fog lamps

● Parking lamps

● Tail lamps

● License plate lamps

● Turn signal lamps

● Stop lamps

● Backup lamps

The auto light is an optional feature. When fitted, the light switch is different.

Automatic Lamp control

On vehicles with Automatic Lamp Control (ALC) the headlamps can be switched ON in two differ-ent ways. First, when the driver places the head-lamp switch in the HEADLAMP position, for mormal operation. Second, with the headlamp switch placed in the AUTO position, for ALC.

Headlamp ON/OFF control is determined by the Body Control Module (BCM). It uses the signals of the headlamp switch. When the headlamp switch is in the AUTO position, the BCM determines head-lamps ON/OFF by the voltage from the ambient light sensor.

Ambient Light Sensor

The Ambient Light Sensor is a light-sensitive tran-sistor that varies its voltage signal to the Body Control Module (BCM) in response to the changes in the outside (ambient) light level.When the BCM receives this signal, the BCM switches ON the low beam headlamps and the exterior lamps for Automatic Lamp Control (ALC).

The ambient light sensor is located in the ins-tument panel centre speaker grille.

Daytime Running Lights

Daytime Running Lights (DRL) is an optional availa-ble feature. DRL illuminate automatically when the engine is started. DRL will turn OFF under the fol-lowing conditions:

– Engine is stopped– Parking lamps switched ON– Low-beam lamps switched ON

Interior lighting

The interior lighting consists of dimming and non-dimming lamps.

The interior lamps which cannot be dimmed are courtsey lamps such as the door step, glove box and rear compartment lamps. Those which can be dimmed make use of a combi-nation of LED’s and bulbs. The voltage signal from the dimmer switch is outputted to the BCM, which in turn provides the correct voltage to the various LED’s and bulbs.

The dimmer switch is located in the mirror control switch assembly next to the steering column.

Electrical


41

TRAINING

Parking Assist System

The Parking Assist System (PAS) is an option for the Captiva. The PAS is a stand alone system. The main components of the PAS are:

● PAS control module

● Ultrasonic sensors

● Alarm buzzer

● PAS telltale in the Instrument Panel Cluster

The PAS control module is mounted behind the right wheelhouse panel in the rear compartment.

The PAS uses four ultrasonic sensors which are mounted into the rear bumper.

The alarm buzzer is used to output an audible indi-cation of the distance measured by the ultrasonic sensors. It is also used for diagnosis purposes. The buzzer is mounted near the knee panelling under the instrument panel.

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Restraint System Overview

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Sensing and Diagnostic Module (SDM)

The SDM is located on the floor beneath the centre floor console assembly.

The SDM performs the following functions:

● Monitors the SIR electrical components and sets a diagnostic trouble code when a malfunction is detected.

● Records any faults that are discovered.

● Displays SIR diagnostic trouble codes and system status information when connected to a scan tool.

● Illuminates the airbag indicator to alert the driver of any fault.

● Provides a reserve power source to deploy the airbags and pretensioners if an accident has disabled the normal power source.

● Monitors vehicle velocity changes to detect frontal impacts using its internal crash sensor.

● Monitors signals from the side impact sensors to detect side impact.

● Causes current to flow through the airbag modules and pretensioners to cause deployment if any impact equals the requirements programmed in the SDM.

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Airbag Modules

The airbag modules are of the hybrid type except for the driver airbag module. The driver airbag is a gas generator type airbag.

Driver and passenger airbag are always deployed together. The passenger airbag is integrated in the upper dashboard panel. Replacement of the pas-senger airbag after deployment requires at least replacement of the complete upper dashboard panel.

Curtain airbags

Volume

Driver Airbag 60 litres

Passenger Airbag 120 litres

Side Airbag 9.5 litres

Curtain Airbag 36 litres

The curtain airbag modules are installed to the inner panel of the roof rail at both sides.

Curtain airbags protect the first and second row occupants against head injuries during side impact collisions. They are designed to deploy only during certain side impact collisions, depending on the crash severity, angle and speed of impact.

Curtain airbag

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Front seatbelt pretensioner

The front seatbelt pretensioners form one assem-bly with the buckles. The pretensioner front seat-belt buckle contains a mechanically controlled pyrotechnical piston which reduces the seatbelt slack when it is activated in a head-on or angled front collision.

The front retractors have integrated load limitors. They are designed to reduce the load of the occu-pant torso during a crash event by allowing extrac-tion of webbing from a locked retractor.

The pretensioner front seatbelt buckle must be replaced after an accident that caused its activa-tion. A deployed pretensioner can be recognised by the shortened buckle strap.

Deployed pretensioner recognition1. Non deployed pretensioner2. Deployed pretensioner

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Passenger seatbelt reminder sensor

The seatbelt reminder sensor determines front passenger presence and enables the SDM to control the passenger seatbelt warning indica-tor and/or chime. The sensor monitors the pressure profile of the front passenger seat and sends it to the SDM.

The seatbelt reminder sensor is integrated in the passenger seat cushion and cannot be replaced separately. In case of a defective sen-sor the complete cushion has to be replaced.

Side impact sensor

For side impact detection, side impact sensors are mounted in the B-pillars of the vehicle.

They provide crash signals to the SDM which will calculate according to these signals whether the side and curtain airbags and the pretensioners have to be deployed.

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System operation

The SIR system operation is comparable to the systems used in the current Chevrolet passenger cars. The addition of the passenger seatbelt reminder sensor, the new pretensioners and the curtain do not change the SIR working principle

Passenger seatbelt reminder sensorWhen the pressure form the passenger’s weight is higher than a specified value, the SDM recognises the passenger as present.

If passenger presence is recognised and passenger seat belt is unbuckled, the SDM will have the pas-senger warning indicator switched ON. If passen-ger presence is not recognised, the passenger warning indicator is switched OFF regardless of the seat belt being buckled.

Curtain airbagThe side impact sensors trigger the SDM to deploy the curtain airbags when the impact equals certain conditions. The curtain airbag system is triggered by the SDM together with the side airbag system.

Service and Diagnosis

SDM replacement

The Body Control Module (BCM) stores the vehi-cles restraint ID from the vehicle identification number (VIN) and the last four digits of the SDMs part number. When the ignition is switched ON, the SDM compares this information to the informa-tion stored in the BCM over the CAN-BUS commu-nication circuit.

If the information matches, the SDM is in ‘Lock mode’. The airbag warning light goes OFF after blinking seven times at ignition ON.

If there is a mismatch between the information stored in the SDM and BCM, DTC B1001 will be set and the SDM will disable all deployments. The SDM is in this case in the ‘unlock mode’ and the airbag warning lamp flashes at 0.5 Hz continuously upon switching ON the ignition. Therefore, when replacing the SDM make sure to program the BCM using SCAN 100.

Precautions

The SDM can maintain sufficient voltage to deploy the airbags and pretensioners for 1 minute after the power has been disconnected. Do not begin service until one minute after disconnecting power to the SIR system also known as to ‘disable’ the SIR system.

The SIR system is disabled as follows:

1. Turn the steering wheel to the straight-ahead

position.

2. Turn the ignition switch to LOCK and remove

the key.

3. Remove the airbag fuses F5 and F6 from the I/P-

fuse block and wait more than one minute for

the capacitor to discharge.

The SIR system is enabled as follows:

Insert the airbag fuse F5 and F6 in the I/P-fuse block.Turn the ignition switch to ON and verify that the airbag indicator flashes seven times and turns OFF

The terminals in the SIR are made of special metal to provide the necessary contact integrity for the sensitive, low energy circuits.

Do not repair any connectors of supplemental inflatable restraints (SIR). Replace any damaged connector with a new one.

Do not attempt to repair any of the SIR wires. Always replace damaged wires with new wiring.

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Being a Sports Utility Vehicle, the Captiva can be equipped with an optional All Wheel Drive system. An AWD system provide advantages like:

– Engine power can be mor efficiently tramsmitted to the road because the whole vehicle mass acts in transferring engine power to the road.

– On a slippery surface the combination of AWD and other systems like ESP enable better traction and vehicle stability.

User operation

The AWD system is an “On Demand” system. The vehicle is not equipped with a driver switch to con-trol the AWD system. The ‘On Demand” AWD sys-tem will automatically switch ON with no action from the driver required.

When the ignition is switched ON, a bulb test will not be performed for the AWD warning indicator. The AWD warning indicator will light up in the case of a detected system failure. When the AWD warning indicator is ON only Front Wheel Drive is available.

When the Rear Drive Module is overheated the warning indicator will light up and only FWD is available. When the temperature returns to normal the warning indicator will turn off and AWD is available again.

There is no indication for the driver when AWD is engaged.

System Components

Along with the engine (1) and gearbox (2), an AWD vehicle is additionally equipped with:

– Transfer case (3)

– Propeller shaft (4)– Rear Drive Module (5)

The Coupling Contol Module is attached to the

Rear Drive Module.

All Wheel Drive

Chevrolet Captiva

Documents

Transcript of Chevrolet Captiva