U210B - Lost Communication Between Fuel Pump Control Module A And Restraints Control Module
DTC DESCRIPTION U210B - LOST COMMUNICATION BETWEEN FUEL PUMP CONTROL MODULE A AND RESTRAINTS CONTROL MODULE
| Description: | The fuel pump control module monitors the duty cycle and frequency of the signal it receives from the restraints control module (RCM). The fuel pump control module determines if the signal on the ENS circuit from the RCM is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module sends a 40% duty cycle signal on the FPM circuit to report the concern to the PCM. This DTC sets when the fuel pump control module is still reporting that it is receiving an invalid duty cycle or frequency from the RCM after a calibrated amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check the harness for routing, alterations, incorrect shielding, or electrical interference from other systems. The ENS is used to notify the fuel pump control module of an event requiring the fuel pump to be disabled. The fuel pump control module monitors the ENS signal by sending a 12V low current signal on the ENS circuit to the RCM. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KC. | ||