On-Board Diagnostic With Scan Tool

NOTE: For detailed instruction and other diagnostic methods using the scan tool or equivalent, refer to the scan tool tester manual and the Introduction - Gasoline Engines .

These Self-Tests should be used to diagnose the PCM and should be carried out in order.

Self Test - Key ON, Engine OFF (KOEO)
Self Test - Continuous Memory Codes
Self Test - Key ON, Engine Running (KOER)
Special Test Modes:
- Wiggle Test Mode
- Output Test Mode
PCM Reset Mode
Clearing DTCs P1000
OBD II Drive Cycle
Other Diagnostic Tool Features

For further information on other diagnostic testing features using the scan tool, refer to the Introduction - Gasoline Engines . Other diagnostic methods include the following.

PID Access Mode
Freeze Frame Data Access Mode
Oxygen Sensor Monitor Mode