Signal Too Low

Signal too low

Checking the component and wiring
Check the fuse for the circuit (30-supply engine control module (ECM)).
Check the battery terminals. Check for contact resistance. Check for oxidation.
Check the battery terminals. Check for contact resistance. Check for oxidation.
Check the cable between engine control module (ECM) terminal #B54 (#C54) and the fuse for the circuit.
Check the condition of the battery and the function of the charging system.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- For information about fuses, see the wiring diagram
- Checking wiring and terminals Checking Wiring and Terminals






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
- Read off the battery voltage.
Check that the battery voltage is not too high or too low.





Is the battery voltage correct?

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 the component and wiring

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