3406E and 3456 Generator Set Engines Caterpillar

The Electronic Control Module (ECM) detects one of the following conditions:

• The ECM reads battery voltage below 9 VDC three times in the last 0.06 seconds and returns.

or

• The ECM reads battery voltage below 9 VDC three times in the last seven seconds.

System Response:

The ECM will log the diagnostic code only if the engine is running. The code may be viewed on the Caterpillar Electronic Technician (ET).

Possible Performance Effect:

• Engine misfires

• Engine shutdown

Troubleshooting:

Test Step 1. Perform the following diagnostic procedure: "Electrical Power Supply Circuit - Test"

Results:

• OK - STOP