Diagnostic Aids

Check for the following conditions:

• Poor connection at the ECM - Inspect the harness connections for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals and poor terminal-to-wire connection.
• Damaged harness - Inspect the wiring harness for damage. If the harness appears to be OK, observe the G sensor display on the scan tool while moving connectors and wiring harnesses related to the sensor. A change in the display will indicate the location of the fault.

An open signal circuit of open PWM serial data line between the ECM and the EBCM will be the cause of this DTC.