HE12 - Check DPFE SIG For Short to PWR In Harness

- Key Off.

- DPFE sensor disconnected.

- Disconnect PCM. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, leave PCM disconnected.

- Key On, Engine Off.

- Measure voltage between Test Pin 65 (DPFE SIG) and Test Pins 51 and 103 (PWR GND) at the breakout box.

- Is voltage greater than 10.5 volts?

YES -- SERVICE short between DPFE SIG and PWR circuit. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- REPLACE damaged PCM. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes