Diagnostic Aids

Enter this test only if directed here from QUICK TEST or another test. This test is only intended to diagnose the following components and circuits:

• Closed Loop Power Relay
• Powertrain Control Module (PCM)
• Battery Positive Voltage (B+)
• Wiring Harness Circuits (SIG RTN, PWR GND, IGNITION SWITCH, VREF, KAPWR & VPWR)

To prevent replacement of good components, be aware the following non-EEC related areas and components may be cause of concern.

• Battery Cables
• Ignition Switch
• Voltage Regulator
• Ground Straps
• Generator