DR20 - Check CID Wiring

- Enter Engine Running Continuous Monitor Diagnostic Test Mode (DTM). Continuous Monitor Diagnostic Test Mode (Wiggle Test)

- Observe Analog Volt/Ohm Meter (VOM) or STAR LED for a fault indication while performing the following:

CAUTION: While performing this test, do not touch any moving engine parts.

- Shake, wiggle, bend the Camshaft Position (CMP) or Crankshaft Position (CKP) sensor wiring from the Powertrain Control Module (PCM) to as close as possible to the CMP or CKP sensor.

- If possible, lightly tap on the CMP or CKP sensor/connector (to simulate road shock).

- Is a fault indicated?

Yes -- Isolate fault and service as necessary. Clear continuous memory. Clearing Diagnostic Trouble Codes

Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Key "OFF". For further diagnosis, go to Normal Scan Data Values. If an EEC-IV monitor box or Scan Tool is not available, go to DR21. DR21 - Road Test