Diagnostic Aids

A thorough inspection of wiring and connectors is important to prevent misdiagnosis. Check for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wiring connections, or damaged wiring harness. An intermittent may be caused by a poor connection, rubbed-through wire insulation, or a broken wire inside insulation.

The following are possible causes of DTC:

• Open in delivered torque circuit.
• Short to ground or voltage in delivered torque circuit.
• Communication frequency problem.
• Communication duty cycle problem.
• Wiring problem, terminal corrosion, or poor connections in delivered torque circuit.
• EBCM not receiving information from PCM.