Diagnostic Notes

NOTE: This section is used to find the correct test procedure for a given symptom. The symptoms and actions in this section are Emission related only. Verify the correct system application to ensure that the vehicle has the given component(s).

NOTE: It is essential that the vehicle has been properly warmed up and is at operating temperature (except when attempting to diagnose a cold driveablity problem). The catalytic converter and feedback systems will not function as designed if this is not achieved. Failure to do so will result in inaccurate test results.

Before proceeding to the appropriate symptom, visually check:

1 Vacuum hoses for splits, kinks and proper routing.
2 Ignition wires for cracking, hardness and proper connections at both the distributor and spark plugs.
3 All wiring for proper connections, pinches and cuts.
4 PCM harness for proper routing.