TC4 - Check Solenoid Circuit For Short

- Key Off.

- Breakout box installed, PCM disconnected.

- Transmission connector disconnected.

- Refer to schematic and table. Pinpoint Test Schematics

- Measure resistance between the suspect solenoid signal pin and Test Pins 71/97 at the breakout box.

- Measure resistance between the suspect solenoid signal pin and Test Pins 51/76 and 91 at the breakout box and chassis ground.

- Is each resistance greater than 10,000 ohms?

YES -- REPLACE PCM. REMOVE breakout box. RECONNECT all components. COMPLETE PCM reset to clear DTC. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- SERVICE short circuits. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes