DTC P0725: Engine Speed Input Circuit: Testing

Turn ignition off. Disconnect TCM and PCM harness connectors. Using a DVOM, measure resistance between TCM harness connector E26, terminal No. 21 (Brown wire) and PCM harness connector E92, terminal No. 6 (Brown wire). If continuity does not exist, repair open in Brown wire. Measure resistance between TCM harness connector E26, terminal No. 21 (Brown wire) and ground. If continuity exists, repair short to ground. If Brown wire is okay, replace TCM and retest system.