DTCS Cannot Be Retrieved

CAUTION: If ABS/TRAC ECU replacement is instructed in following testing, always ensure ABS/TRAC ECU connectors and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ABS/TRAC ECU malfunction.

Inspect TRAC OFF indicator light circuit. Repair as needed. See TRAC OFF INDICATOR LIGHT, TRAC CUT SWITCH CIRCUIT under SYSTEM TESTS. If TRAC OFF indicator light circuit is okay, inspect Tc terminal circuit. See Tc TERMINAL CIRCUIT under SYSTEM TESTS. If all preceding tests are okay, replace ABS/TRAC ECU.