H45 - Check Resistance of Injector(s) and Harness

- Key Off.

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

NOTE: This erases Continuous Codes.

- Install breakout box, leave PCM disconnected.

- Measure resistance between suspect injector Test Pin(s) and Test Pin 71 or 97 at the breakout using the chart below:

Cylinder To Test Pin Chart:

- For No Starts:
Pick any injector and measure resistance between injector Test Pin and Test Pin 71 or 97 at the breakout box.

- Is the resistance between 11.0-18.0 ohms?

YES -- Injector and harness resistance is OK. For No Start and DTCs: Go to H48. H48 - Check Injector Driver Signal

NO -- For all others: Go to H46. H46 - Check Continuity of Fuel Injector Harness