3.
Disconnect the ECM connector (A).
TCM ground circuit test: Measure resistance between TCM and chassis ground using the T-connector in TCM harness connector as TCM side check point.
Specification : Below 1Ω
TCM connector test: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure.
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 the TCM.
The original TCM re-test : Install the original TCM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original TCM with a new one.
If problem does not occur, this is intermittent problem. If problem does not occur, this is problem of other parts.
Turn ignition switch OFF.
Disconnect the negative (-) battery cable.
Disconnect the ECM connector (A).
Remove the bracket installation bolts (A) and the nut (B).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Install in the reverse order of removal.
Perform the procedures related in the ECM after replacing the TCM.
(Refer to Engine Control / Fuel System - "Engine Control Module")
Perform the TCM adaptive values learning procedure.
(Refer to "Automatic transaxle control system (Adjustment)" in this group)
