HD9 - Check Injector Driver Signal

NOTE: Requires a standard 12 volt test lamp.

- Key Off.

- Breakout box installed.

- Connect PCM to breakout box.

- Connect Test Lamp between Test Pin 71 or 97 and suspect injector test pin.

- Start engine.

- Does test lamp have a dim glow while running engine?

NOTE: Properly operating system will show a dim glow on the Test Lamp.

YES -- GO to HD10. HD10 - Check Fuel Pressure

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