No Lock-Up Occurs: Troubleshooting

WARNING:

When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and tester, on a level road.

DTC TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Was "A/T System Check" performed?	Go to Step 2.	Go to A/T SYSTEM CHECK .
2	Check DTC Is DTC P0602, P0712, P0713, P0717, P0722, P0962, P0963, P0973, P0974, P0976, P0977, P1702, P1706, P2763, P2764, U0073 or U0100 detected?	Perform DTC Flow to repair and retry.	Go to Step 3.
3	ECT check Warm up engine to normal operating temperature. Check ECT using scan tool. Is ECT more than 60 °C (140 °F)?	For vehicle equipped with 4L/N switch, go to Step 4. For vehicle equipped without 4L/N switch, go to Step 5.	Faulty ECT sensor, its circuit or engine cooling system. If OK, substitute a known-good TCM and recheck.
4	4L/N switch signal inspection With ignition switch ON, check voltage between terminal "E93-4" of TCM connector and ground. 4L/N switch specification Transfer gear position or "4H": Battery voltage Transfer gear position "4L" or "N": 0 - 2 V Is result as specified?	Go to Step 5.	Faulty "4L" switch or its circuit. If OK, substitute a known-good TCM and recheck.
5	Brake light switch signal inspection With ignition switch ON, check voltage between terminal of ECM connector and ground. Brake light switch specification Brake pedal is released: 0 - 1 V Brake pedal is depressed: Battery voltage Is result as specified?	Substitute a known-good TCM and recheck.	Mis-adjusted brake light switch, faulty brake light switch or its circuit. If OK, substitute a known-good TCM and recheck.