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DD91 - Check For Intermittent Harness Damage



- Still in Key On Engine Off Continuous Monitor test mode.

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

- Grasp the vehicle harness closest to the EGR Position (EGRP) sensor vehicle harness connector. Wiggle, shake or bend a small section of the EEC-IV vehicle harness while working toward the dash panel. Also, wiggle, shake and bend the EEC-IV vehicle harness from the dash panel to the Powertrain Control Module (PCM).

- 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 -- Go to DD92. DD92 - Check PCM Connector
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