With Check Engine Light

1. Disconnect the jumper connecting PCM STI to ground.

2. Connect a Rotunda 88 Digital Multimeter 105-00053, or equivalent as a tachometer.

3. Run engine at 2000 rpm for three minutes.

4. Turn engine OFF, and wait 10 seconds.

5. Start engine. Run engine at idle.

Diagnostic Connector (STO/STI):

6. Jumper PCM STI on diagnostic connector to ground.

7. Record service codes.

- If no codes and sent here from Key On Engine Off (KOEO) Self Test, Switch Monitor Test

- If no codes and sent here from Erase and Retest, Scan Tool Testing and Procedures

- If codes are present, refer to Service Code Chart below.

CODE AFFECTED CIRCUIT PINPOINT TEST

02 Crankshaft Position Sensor CKP CKP - Crankshaft Position Sensor

03 Cylinder Identification Sensor CID CID - Cylinder Identification Sensor

08 Air Flow Meter VAF VAF - Vane Air Flow Sensor

09 Engine Coolant Temperature ECT ECT - Engine Coolant Temperature Sensor

10 Intake Air Temperature IAT IAT - Intake Air Temperature Sensor

12 Throttle Position Sensor TP TP - Throttle Position Sensor

14 Barometric Pressure Sensor BARO BARO - Barometric Pressure Sensor

15 Oxygen Sensor O2S O2S - Oxygen Sensor

17 Oxygen Sensor O2S O2S - Oxygen Sensor

25 Solenoid Controlled By Ground SCG SCG - Solenoid Controlled By Ground

26 Solenoid Controlled By Ground SCG SCG - Solenoid Controlled By Ground

34 Solenoid Controlled By Ground SCG SCG - Solenoid Controlled By Ground

41 Solenoid Controlled By Ground SCG SCG - Solenoid Controlled By Ground

CODES NOT LISTED PGC PGC - Power and Ground Connections