GENERATOR GP 9Y0378 - Caterpillar

MID 036 CID 0190 FMI 11Conditions Which Generate This Code:The Electronic Control Module (ECM) detects the following conditions:
The pattern of the timing ring from the primary engine speed/timing sensor is lost for more than one second.
The signal from the secondary engine speed/timing sensor is good.System Response:The ECM will log the diagnostic code. The ECM will use the secondary engine speed/timing sensor.Possible Performance Effect:
The engine may misfire and/or shutdownNote: The engine will shut down only if the primary engine speed/timing sensor and the secondary engine speed/timing sensor fail.Troubleshooting:Test Step 1. Perform the following diagnostic procedure: "Engine Speed/Timing Sensor Circuit - Test"Results:
OK - STOP