Z10

WARNING : USE CAUTION WHEN PERFORMING ANY OF THE TEST STEPS. ALWAYS BE AWARE OF HANDS, CLOTHING OR TOOLS NEAR COOLING FANS, ENGINE DRIVE BELTS OR HOT SURFACES.

- Key Off.

- Connect Scan tool to DLC.

- Access PIDs based on information from the pinpoint test or intermittent symptom charts at the end of this pinpoint test.

- Go to the area of the suspected wiring or component fault.

- Key On, Engine Off.

- Lightly tap on component while viewing PID values. Wiggle and pull each component wire (Signal, Signal Return and VREF, if applicable) at the component.

- Look for abrupt changes in PID values. Compare the actual values to the Diagnostic Reference Values. Normal Scan Data Values - Includes Pids

- Are any PID values out of range, or drop out and back Into range?

Yes -- Possible wiring or component problem. CHECK each wire for corrosion, bent or loose terminals and wire terminal crimps. SERVICE as necessary. Otherwise, REPLACE component. VERIFY repair. If unable to verify, REINSTALL original part and GO to Z11. Z11

No -- GO to Z11 for PCM wiring check. Z11