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.

If ABS/TCS indicator illuminates only during moist conditions, inspect wheel speed sensor circuitry for signs of water intrusion. Clear DTCs and simulate effects of water intrusion using a saltwater solution. If DTC resets, replace suspect wiring harness.

Possible cause of DTCs C0036, C0041, C0046 and C0051 is electrical noise on wheel speed sensor harness wiring. Electrical noise could result from wheel speed sensor wires being routed to close to high energy ignition system components, such as spark plug wires.