Test TC-15C - Speed Control Solenoid Circuits Or Speed Control Power Relay Circuits
NOTE:
Perform TEST TC-15A before proceeding.
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION DIRECTORY. For component location, see wiring diagram in the appropriate WIRING DIAGRAMS
article. See following list.
- 4.0L, see: WIRING DIAGRAMS - 4.0L 6-CYL .
- 5.2L, see: WIRING DIAGRAMS - 5.2L V8 .
- Disconnect brakelight switch connector. Using scan tool in voltmeter mode, check voltage on brakelight switch connector, S/C (ON/OFF switch sense) power supply circuit (Yellow/Red wire). If voltage is 10 volts or less, perform TEST TC-15D . If voltage is more than 10 volts, go to next step.
- Using an external ohmmeter, check resistance of switched S/C power supply circuit (Dark Blue/Light Green wire) between S/C servo 4-pin connector and brakelight switch connector. If resistance less than 5 ohms, replace brakelight switch and perform TEST VER-4A . If resistance is 5 ohms or more, repair open switched S/C power supply circuit and perform TEST VER-4A.