On-Board Diagnostic (OBD) With Scan Tool

WARNING: This page is about a different variant/trim than selected.

NOTE: For detailed instruction and other diagnostic methods using the scan tool or equivalent, refer to Scan Tool Tester manual and INTRODUCTION - GASOLINE MODELS .

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
On-Board Diagnostic (OBD) II Drive Cycle
Other scan tool features