Test TC-171B: Governor Pressure Solenoid/Trans Relay Circuits
NOTE:
This test does not apply to TJ and XJ bodies. Perform TEST TC-171A: GOVERNOR PRESSURE SOLENOID/TRANS RELAY CIRCUITS before proceeding. For connector terminal identification, see CONNECTOR IDENTIFICATION . For component location and wiring diagram, see WIRING DIAGRAMS article.
- Turn ignition off. Remove transmission control relay. Inspect transmission control relay connector and terminals for damage. Repair connector and terminals as necessary and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies. If connector and terminals are okay, go to next step.
- Turn ignition off. Using an external ohmmeter, check resistance between ground and transmission control relay connector, transmission control relay output circuit (White/Brown wire on AN body; Red wire on BE/BR and DN bodies; Light Blue wire on all other bodies). If resistance is less than 5 ohms, repair short to ground in transmission control relay output circuit and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies. If resistance is 5 ohms or more, go to next step.
- Check resistance of transmission control relay output circuit (White/Brown wire on AN body; Red wire on BE/BR and DN bodies; Light Blue wire on all other bodies) between transmission solenoid connector and transmission relay connector. If resistance is more than 5 ohms, repair open transmission control relay circuit and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies. If resistance is 5 ohms or less, go to next step.
- Turn ignition on. Using scan tool, check voltage on transmission control relay connector, fused B+ circuit (Yellow/White wire on DN body; Light Green wire on ZJ body; Red/White wire on all other bodies). If voltage is 10 volts or less, repair open fused B+ circuit and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies. If voltage is more than 10 volts, replace transmission control relay and perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES on AB body, or TEST VER-2A: ROAD TEST VERIFICATION on all other bodies.