Operation CHARM: Car repair manuals for everyone.
Home >> Volvo >> 2000 >> S40 L4-1.9L Turbo VIN 25 B4204T2 >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Keyless Entry >> Testing and Inspection >> Component Tests and General Diagnostics >> Checking Central Locking Motors, Side Doors

Checking Central Locking Motors, Side Doors






Checking the central locking motors, side doors

Activation of locking motors, locking.




- Ignition on.
- Close all the side doors.
Activate the central lock motors.
All doors shall now lock.

Note! Vehicle not equipped with remote control has no lock motor in the driver's door. Locking/unlocking will not be performed for his door.

- Select 1 if the driver's door does not lock.
- Select 2 if the passenger door does not lock.
- Select 3 if the left rear door does not lock.
- Select 4 if the right rear door does not lock.
- Select 5 if no doors lock.
- Select OK if all doors lock.





Select one of the above options.

OK - No Fault Found

1 - Checking the connectors and cables driver's door

2 - Checking the connectors and leads, passenger door

3 - Checking the connectors and cables, rear door driver's side

4 - Checking the connectors and cables, rear door passenger side

5 - Checking the power supply

-------------------------------------------------

Checking the connectors and cables driver's door
Check the VGLA module's connector and the central lock motor's connector for contact resistance and oxidation according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles without blocked lock position function:
Check the cable between the VGLA control module #B11(#37) and central lock motor's connector #1 as well as the cable between VGLA control module #B13 (#39) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with blocked lock position function:
Check the cable between the VGLA control module #B11(#37) and central lock motor's connector #1 as well as the cable between VGLA control module #B13 (#39) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with 2-stage unlocking:
Check the cable between the VGLA control module #B2(#28) and central lock motor's connector #2 as well as the cable between VGLA control module #A15 (#15) and central lock motor's connector #1 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Other information
- Central locking motor or switches front doors Central Locking Motor Or Switches Front Doors
- Signal specification, lock and alarm, (VGLA) Signal Specification
- Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA)

Location Of Components, Central Locking Unit Doors 6/28, 6/29, 6/30, 6/31:





Was a fault detected?

Yes - FAULT FOUND

No - Replacing a component

-------------------------------------------------

Checking the connectors and leads, passenger door
Check the VGLA module's connector and the central lock motor's connector for contact resistance and oxidation according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles without blocked lock position function:
Check the cable between the VGLA control module #B12(#38) and central lock motor's connector #1 as well as the cable between VGLA control module #B2 (#28) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with blocked lock position function:
Check the cable between the VGLA control module #B12(#38) and central lock motor's connector #1 as well as the cable between VGLA control module #B2 (#28) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with 2-stage unlocking:
Check the cable between the VGLA control module #B13(#39) and central lock motor's connector #1 as well as the cable between VGLA control module #B12 (#38) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Other information
- Central locking motor or switches front doors Central Locking Motor Or Switches Front Doors
- Signal specification, lock and alarm, (VGLA) Signal Specification
- Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA)

Location Of Components, Central Locking Unit Doors 6/28, 6/29, 6/30, 6/31:





Was a fault detected?

Yes - FAULT FOUND

No - Replacing a component

-------------------------------------------------

Checking the connectors and cables, rear door driver's side
Check the VGLA module's connector and the central lock motor's connector for contact resistance and oxidation according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles without blocked lock position function:
Check the cable between the VGLA control module #B11(#37) and central lock motor's connector #1 as well as the cable between VGLA control module #B13 (#39) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with blocked lock position function:
Check the cable between the VGLA control module #B11(#37) and central lock motor's connector #1 as well as the cable between VGLA control module #B13 (#39) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with 2-stage unlocking:
Check the cable between the VGLA control module #B2(#28) and central lock motor's connector #2 as well as the cable between VGLA control module #B11 (#27) and central lock motor's connector #1 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Other information
- Replacing central locking motor, rear door Replacing Central Locking Motor, Rear Door
- Signal specification, lock and alarm, (VGLA) Signal Specification
- Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA)

Location Of Components, Central Locking Unit Doors 6/28, 6/29, 6/30, 6/31:





Was a fault detected?

Yes - FAULT FOUND

No - Replacing a component

-------------------------------------------------

Checking the connectors and cables, rear door passenger side
Check the VGLA module's connector and the central lock motor's connector for contact resistance and oxidation according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles without blocked lock position function:
Check the cable between the VGLA control module #B12(#38) and central lock motor's connector #1 as well as the cable between VGLA control module #B2 (#28) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with blocked lock position function:
Check the cable between the VGLA control module #B12(#38) and central lock motor's connector #1 as well as the cable between VGLA control module #B2 (#28) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault
For vehicles with 2-stage unlocking:
Check the cable between the VGLA control module #B13(#39) and central lock motor's connector #1 as well as the cable between VGLA control module #B12 (#38) and central lock motor's connector #2 for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Other information
- Replacing central locking motor, rear door Replacing Central Locking Motor, Rear Door
- Signal specification, lock and alarm, (VGLA) Signal Specification
- Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA)

Location Of Components, Central Locking Unit Doors 6/28, 6/29, 6/30, 6/31:





Was a fault detected?

Yes - FAULT FOUND

No - Replacing a component

-------------------------------------------------

Checking the power supply
Check the fuse for central lock motors in relay/fuse box in the engine compartment.

Hint: If the fuse is defective, check the cable between the fuse and VGLA-control module #B1 (#27) for short-circuiting to ground according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Check the cable between the fuse and VGLA-control module #B1 (#27) for open circuit according to: Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault

Other information
- The voltage between the VGLA-control unit #B1 (#27) and ground shall be approx. the same as battery voltage.
- Signal specification, lock and alarm, (VGLA) Signal Specification
- Connecting the breakout box, lock and alarm (VGLA) Connecting The Breakout Box, Lock And Alarm (VGLA)
Remedy as necessary.

Select Continue.

Continue - Verification

-------------------------------------------------

Replacing a component
Try with a new central lock motor in the door in question.

Other information
- To access/replace the central lock motor, see: Central locking motor or switches front doors Central Locking Motor Or Switches Front Doors

Select Continue.

Continue - Verification

-------------------------------------------------

Replacing a component
Try with a new central lock motor in the door in question.

Other information
- Replacing central locking motor, rear door Replacing Central Locking Motor, Rear Door

Select Continue.

Continue - Verification

-------------------------------------------------

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Reconnect the connectors, reinstall components etc.
- Ignition on.
- Close all the side doors.
Activate the central lock motors.
All doors shall now lock.

Note! Vehicle not equipped with remote control has no lock motor in the driver's door. Locking/unlocking will not be performed for his door.





Is the function OK?

Yes - FAULT FOUND

No - Fault-tracing information

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

------------------------

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Activation of locking motors, locking.

-------------------------------------------------

pro multis · About Operation CHARM