Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking wiring and components
Check signal cable between ignition coil #1 and control module:
- #A31 (#A31) (ECM 3300)
- #A50 (#A50) (ECM 3310)
- #A52 (#A52) (ECM 3320)
- #A49 (#A49) (ECM 3330)
- #A30 (#A30) (ECM 3340)
- #A51 (#A51) (ECM 3350)
for a short-circuit to ground 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, B5254T2 Connecting the Test Box.
- To access/replace the ignition coil, see Replacing ignition coil Service and Repair.
- For information about signals, see Signal specification Signal Specification.













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 - Verification completed

No - 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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking wiring and components

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