Diagnostic Aids

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Inspect for the following conditions:

Poor connections at the component
Poor connections at any in line harness connectors
A faulty PCM

An intermittent may be caused by the following conditions:

A poor connection
Rubbed through wire insulation

Inspect the Powertrain Control Module (PCM) harness connectors for the following conditions:

Backed out terminals
Improper mating
Broken locks
Improperly formed or damaged terminals
Poor terminal-to-wire connections

Inspect the wiring. If any wiring repairs are necessary, refer to Repair Procedures in Electrical Diagnosis.