NB1 - MIL Always on: Check MIL Circuit For Shorts to Ground

NOTE: If vehicle will not start, perform Pinpoint Test Step A1. A - No Start Test

- If any Key On Engine Off Continuous Memory Diagnostic Trouble Codes are present, service before proceeding.

- Key Off.

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

- Install breakout box, leave PCM disconnected.

- Measure resistance between Test Pin 2 and Test Pin 51 or 103 at the breakout box.

- Is resistance less than 5.0 ohms?

YES -- SERVICE short circuit between Test Pin 2 and Malfunction Indicator Lamp (MIL). REMOVE breakout box. RECONNECT PCM. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

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