Part 4B

Checking the response code








- Ignition off.
- Connect the stop (brake) lamp switch
- Connect the Volvo Scan Tool (ST) to the data link connector (DLC).
- Ignition on.




- Activate the Scan Tool (ST) in MODE 2.
- Set the switch to the OFF position.
- Depress the brake pedal.
- Check whether response code 1-3-2 is obtained.





Is response code 1-3-2 obtained?

Yes - FAULT FOUND

No - Replacing the component

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Replacing the component




- Ignition off.
- Replace with a new bulb failure warning sensor.





Select "Continue" when the fault has been remedied.

Continue - Verification

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Checking the power supply to the control module












- Ignition off.
- Stop (brake) lamp switch connected.
- Brake pedal unaffected.
- Disconnect the control module.
- Ignition on.
Connect a voltmeter between control module connector terminal 7 and ground.









The voltmeter should read approximately 0 V.

OK - Checking the resistance in the signal cable

Not OK - Checking for a short-circuit

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Checking for a short-circuit




- Ignition off.








- Check the cable between stop (brake) lamp switch connector terminal #3 (terminal #2 on cars with shift lock) and control module connector terminal #7 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.





Select "Continue" when the fault has been remedied.

Continue - Verification

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Checking the resistance in the signal cable












- Ignition off.
- Control module disconnected.
- Disconnect the stop (brake) lamp switch.
Connect an ohmmeter between stop (brake) lamp switch connector terminal 3 (terminal 2 on cars with shift lock) and control module connector terminal 7.









The ohmmeter should read approximately 0 ohms.

OK - Checking the control module connectors

Not OK - Checking for an open-circuit

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Checking for an open-circuit




- Ignition off.








- Check the cable between stop (brake) lamp switch connector terminal #3 (terminal #2 on cars with shift lock) and control module connector terminal #7 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.





Select "Continue" when the fault has been remedied.

Continue - Verification

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

Checking the control module connectors












- Ignition off.
- Check control module connector terminal #7 for contact resistance and oxidation and for loose connections. Remedy contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault. Remedy loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
- Connect the control module.
- Connect the stop (brake) lamp switch
- Connect the Volvo Scan Tool (ST) to the data link connector (DLC).
- Ignition on.








- Activate the Scan Tool (ST) in MODE 2.
- Set the switch to the OFF position.
- Depress the brake pedal.
- Check whether response code 1-3-2 is obtained.

Is response code 1-3-2 obtained?

Yes - Fault-tracing information

No - Replacing the component

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Fault-tracing information




- Ignition off.
- This response code was not obtained because of loose connections in the control module connector.

Select "Continue" when the fault has been remedied.

Continue - FAULT FOUND

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

Replacing the component




- Ignition off.
- Replace with a new control module according to Control module Service and Repair.





Select "Continue" when the fault has been remedied.

Continue - Verification

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

Verification

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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

Fault-tracing information

Attempt New Test - Checking the response code

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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Connecting the Volvo System Tester
DONE - Checking the response code

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FAULT FOUND - FAULT FOUND

FAULT-TRACING FAILED - FAULT-TRACING FAILED

No Fault Found - No Fault Found

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Felsökning för svarskod 2-1-4





Internal fault in the control module

Replacing the component




- Ignition off.
- Replace with a new control module according to Control module Service and Repair.





Select "Continue" when the fault has been remedied.

Continue - Verification

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

Verification

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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

Fault-tracing information

Attempt New Test - Replacing the component

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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

FAULT FOUND - FAULT FOUND

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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Volvo System Tester
Terminal
FAULT FOUND - Investigating disengagement causes

No Fault Found - Inkoppling

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Inkoppling
Connecting the Volvo System Tester
DONE - Investigating disengagement causes