SHIELD AS-YM 3676082 - Caterpillar

The Electronic Control Module (ECM) detects a signal for the throttle position that is not in the operating range of the control. System Response:The ECM will log the diagnostic code. The ECM flags the throttle position as invalid data. The last valid engine speed will be maintained as the desired engine speed until one of the following conditions occur:
The ECM receives an input from the throttle backup switch for a different engine speed.
The signal from the throttle switch becomes valid and the signal from the throttle switch remains valid.Possible Performance Effect:The throttle backup switch must be used to set engine speed.Troubleshooting:Test Step 1. Perform the following diagnostic procedure: "Throttle Switch Circuit - Test"Results:
OK - STOP