Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the generator (GEN) and battery




- Ignition off
- Connect the breakout box to the central electronic module (CEM)
- Start the engine.
Check the 30-supply to central electronic module (CEM) terminal #3E (breakout box terminal #B23) and terminal #6E (breakout box terminal #B26). The voltage must not exceed 15 volts at 2,000 rpm.
Also check that the battery is not over-charging.
Remedy as necessary.

Other information:
- To access the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- The generator (GEN) connector for gasoline engines, see Generator, replacement Service and Repair
- The generator (GEN) connector for diesel engines, see Generator (GEN), replacing Service and Repair.

Was the function OK?

Yes - Verification

No - Replacing the component

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Replacing the component
Replace the charge regulator on the generator (GEN).
Start the engine and wait for at least 1 minute. Read off diagnostic trouble codes (DTCs).

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- To access or replace the charge regulator for gasoline engines, see Governor, replacement Service and Repair
- To access or replace the charge regulator for diesel engines, see Governor, replacing Service and Repair.





Is the fault intermittent?

Yes - Verification

No - Replacing the component

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Replacing the component
Replace the battery.

Other information:
- When replacing the battery, see Battery, disconnecting Battery Disconnecting.


Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect connectors, install components, etc.
- Start the engine.
Check that diagnostic trouble code status changes from permanent to intermittent.





Is the diagnostic trouble code status intermittent?

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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Attempt New Test - Checking the generator (GEN) and battery

FAULT-TRACING FAILED - No Fault Found

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