4.
Disconnect the TCM 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.
Remove the battery.
Disconnect the TCM connector (A).
Loosen the TCM bracket bolts (A).
TCM installation bolt/nut :
9.8 ~ 1.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Remove the TCM from the bracket by loosening the bolts (A).
Tightening torque :
5.9 ~ 9.8 N.m (0.6 ~ 1.0 kgf.m, 4.3 ~ 7.2 lb-ft)
Install in the reverse order of removal.
Perform Transaxle Control Module (TCM) learning after replacing the TCM prevent slow transaxle response, jerky acceleration and jerky startup.
(Refer to "Repair procedures" in Automatic Transaxle Control System of this group)
After replacing the TCM, perform the ECM-related procedures.
(Refer to "Engine Control Module" in FL group)
