Faulty Signal
Faulty signal
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 981 3194 Replaced by 9511495 981 3194 Replaced by 951 1495
Checking for permanent or intermittent faults
- Turn the ignition off and on at least three times with at least three seconds in between.
Read off diagnostic trouble codes (DTCs).
Is diagnostic trouble code (DTC) IMM-336 still stored?
Yes - Checking the VGLA output
No - Fault-tracing information
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Checking the VGLA output
- Ignition on.
Read off the VGLA OUPUT parameter.
Is VGLA OUTPUT LOW displayed?
Yes - Connecting the breakout box
No - Checking for short-circuits to supply voltage
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Connecting the breakout box
- Ignition off.
- Remove the immobilizer control module according to Immobilizer control module Immobilizer Control Module.
- Connect adapter 981 3194 Replaced by 9511495 981 3194 Replaced by 951 1495 and breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 according to Connecting the breakout box Connecting the Breakout Box.
Select Continue.
Continue - Checking the VGLA circuit
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Checking for short-circuits to supply voltage
Check the cable between immobilizer control module #7 and VGLA control module #A11 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 VGLA circuit
- VGLA control module connector A disconnected.
- Immobilizer control module (TCM) disconnected.
Connect an ohmmeter between breakout box #53 (#7) and ground.
The ohmmeter should read infinite resistance!
OK - Checking for an open-circuit
Not OK - Checking for short-circuits to ground
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Checking for short-circuits to ground
Check the cable between immobilizer control module #7 and VGLA control module #A11 for a short-circuit to ground 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 for an open-circuit
Check the cable between immobilizer control module #7 and VGLA control module #A11 for 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
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall the connectors, components etc.
- Start the engine.
Do not start the engine if there is a communication fault between the engine control module (ECM) and the immobilizer.
Does the engine start?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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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
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Checking for permanent or intermittent faults
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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DONE - DONE
FAULT FOUND - FAULT FOUND
Attempt New Test - Checking for permanent or intermittent faults
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