DTC P1105: Tip Sensor Solenoid Circuit: Testing
- Ignition on, engine not running. With the DRBIII® scan tool, read PCM DTCs and record the related freeze frame data. Is the Good Trip displayed and equal to zero? If yes, go to next step. If no, see INTERMITTENT CONDITION under SELF-DIAGNOSTIC SYSTEM.
- Turn the ignition off. Disconnect the TIP solenoid harness connector. Using a 12-volt test light, jumper across the TIP solenoid harness connector. While actuating the solenoid wiggle the related wiring harness. With the DRBIII® scan tool, actuate the TIP solenoid. Does the test light illuminate brightly and flash on and off? If yes, replace the TIP solenoid. If no, go to next step.
- Disconnect the TIP solenoid harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the (F12) fused ignition switch output circuit. Does the test light illuminate brightly? If yes, go to next step. If no, repair the (F12) fused ignition switch output circuit.
- Turn the ignition off. Disconnect the TIP solenoid harness connector. Disconnect the PCM harness connectors. Turn the ignition on. Measure the voltage of the (K55) TIP solenoid control circuit in the TIP solenoid harness connector. Does the voltmeter indicate any voltage present? If yes, repair the short to voltage in the (K55) TIP solenoid control circuit. If no, go to next step.
- Turn the ignition off. Disconnect the TIP solenoid harness connector. Disconnect the PCM harness connectors. Measure the resistance of the (K55) TIP solenoid control circuit from the TIP solenoid harness connector to the appropriate terminal of Miller Special Tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the open in the (K55) TIP solenoid control circuit.
- Turn the ignition off. Disconnect the TIP solenoid harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (K55) TIP solenoid control circuit at the TIP solenoid harness connector. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K55) TIP solenoid control circuit. If no, go to next step.
- Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .
CAUTION:
Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool (8815) to perform diagnosis.