Repair Procedures: Inspection

1. TCM ground circuit test: Measure the resistance between TCM and chassis ground. (Inspect the terminal connected to the chassis ground back of harness connector as the inspection point of TCM side.)

   Specification:  Below 1Ω

2. TCM connector test: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins contact pressure.
3. If problem is not found in Steps  1 and  2, the TCM could be faulty.

   If so, replace the TCM with a new one, and then check the vehicle again. If the vehicle operates normally then the problem was likely with

4. Reinspection of original TCM: Install the original TCM (probably broken) into a known-good vehicle and check the vehicle. If the problem again, replace the original TCM with a new one.

If the problem does not recur, this is an intermittent problem and other part may be faulty.