Test Procedure

Deactivate Self-Test. Start engine and run at 2000 RPM for 5 minutes to ensure EGO sensor is operating and that vehicle is at normal operating temperature. Turn engine off. Turn ignition on, and wait 10 seconds. Jumper STI connector to ground. Start engine and activate Self-Test by disconnecting and then reconnecting STI jumper to ground. Record all codes displayed. Refer to SERVICE CODE TO CIRCUIT TEST REFERENCE CHART to find the appropriate CIRCUIT TEST.