Test TC-171B - Governor Pressure Solenoid/Trans Relay Circuits
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
NOTE:
Perform TEST TC-171A before proceeding. For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS . Perform VERIFICATION TEST VER-1A after each repair.
- Turn ignition off. Disconnect transmission solenoid connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary. If connector and terminals are okay, go to next step.
- Using an external ohmmeter, measure resistance between terminal No. 4 on transmission solenoid connector and terminal No. 29 on Powertrain Control Module (PCM). If resistance is 5 ohms or more, repair open in governor pressure solenoid circuit circuit. If resistance is less than 5 ohms, go to next step.
- Measure resistance between terminal No. 1 on transmission solenoid connector and transmission control relay output circuit on transmission control relay connector. If resistance is more than 5 ohms, repair open transmission control relay output circuit. If resistance is 5 ohms or less, go to next step.
- Drain and remove transmission pan. Disconnect governor pressure solenoid connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary. If connector and terminals are okay, go to next step.
- Measure resistance across governor pressure solenoid component terminals. If resistance is 8 ohms or less, replace internal transmission wiring harness. If resistance is more than 8 ohms, replace governor pressure solenoid.