Diagnostic Aids

Perform this test only when directed by QUICK TEST. This test is intended to diagnose the following.

• Knock Sensor (KS)
• Wiring Harness Circuits;: (KS & SIG RTN)
• Powertrain Control Module (PCM)

To prevent replacement of good components, be aware the following non-EEC related areas may be at fault:

• Poor Fuel Quality
• Ignition System
• Ignition Or Valve Timing
• Engine Mechanical Condition