A12 - Check PIP Signal Circuit For Shorts To Ground
*** THIS ARTICLE REFLECTS CHANGES MADE BY TSB # 945B16, March 1994
- Key Off.
- Breakout box installed, PCM disconnected.
- ICM disconnected.
- Measure resistance between Test Pin 49 (PIP) and Test Pins 23, 51, 91 and 103 (short to GROUND).
- Is each resistance greater than 10,000 ohms?
YES -- Go to A13. A13 - Check PIP Signal
NO -- SERVICE short circuit. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes
If vehicle does not start, go to A13. A13 - Check PIP Signal