G3520B Engines Caterpillar

The slave Electronic Control Module (ECM) has been powered for at least five seconds. The engine has been running. Either of the following conditions occur:

• The power supply voltage is less than 6 VDC for a minimum of 0.060 seconds. The power supply voltage returns to the normal range within 0.015 seconds.

• There are three voltage readings of less than 6 VDC within seven seconds.

System Response:

The alarm output is activated. The code is logged.

Note: If power supply voltage is lost and the voltage does not return, the slave ECM will not log this diagnostic code. The engine will shut down.

The intermittent problem may not affect engine operation. However, the engine may experience speed burps, intermittent shutdowns, and/or complete shutdowns.

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

Results:

• OK - STOP