Diagnostics

Diagnostics

Special Tool(s):

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 Computers and Control Systems.

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 Computers and Control Systems. Other diagnostic methods include the following.
^ PID Access Mode
^ Freeze Frame Data Access Mode
^ Oxygen Sensor Monitor Mode