Signal Missing. Permanent Fault

Signal missing. Permanent fault

Checking connector








- Ignition off
- Check ignition coil connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Reinstall components, reconnect connectors etc.
- Start the engine and let it idle.
Engine should run evenly.
If the engine is OK it means that the cause of the fault has been loose connections in the connector.

Other information
- To access/replace the ignition coil, see Removal and Replacement.
- For information about signals, see Signal specification Signal Specifications.









Is the engine idling evenly?

Yes - FAULT FOUND

No - Checking wiring and components

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Checking wiring and components
Check signal cable between ignition coil #1 and control module:
- #A31 (#A31) (ECM 3300)
- #A30 (#A30) (ECM 3310)
- #A50 (#A50) (ECM 3320)
- #A52 (#A52) (ECM 3330)
- #A51 (#A51) (ECM 3340)
and power supply between system relay #3 and ignition coil #4 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information
- Connecting the breakout box/accessing the control module, see Connecting the breakout box, B5234T9, B5244T7 Connecting The Breakout Box.
- To access/replace the ignition coil, see Removal and Replacement.
- For information about signals, see Signal specification Signal Specifications.














Continue - Verification

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Verification




Verification

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








- Ignition off
- Reconnect connectors, reinstall components etc.
- Start the engine. Allow the engine to idle.
The engine must fire on all cylinders.





Is the engine idling evenly?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking connector

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