Diagnostics

DIAGNOSTICS

On-Board Diagnostics With Scan Tool

NOTE:For detailed instructions and other diagnostic methods using the scan tool, see Engine Control (EC) System.
NOTE:If using a generic scan tool, see Engine Control (EC) System for instructions on carrying out On-Board Diagnostics procedures.
These self-tests should be used to diagnose the PCM and should be carried out in order.

- Self-Test KOEO - Key On/Engine Off
- Self-Test CMDTCs - Continuous Memory DTCs
- Self-Test KOER - Key On/Engine Running
- Special Test Modes:

- Wiggle Test Mode
- Output Test Mode

- PCM Reset Mode
- Clearing DTCs P1000
- OBD II Drive Cycle
- Other Scan Tool Features

For information on other diagnostic testing features using the scan tool, see Engine Control (EC) System. Other diagnostic methods include the following:

- PID access mode
- Freeze frame data access mode
- Oxygen sensor monitor mode.