Reading and Clearing Diagnostic Trouble Codes

1. Perform EATC On-Board Diagnostics. Record all error codes displayed during test.

2. If error codes appear during EATC On-Board Diagnostics, follow diagnosis procedures outlined for each code recorded.

3. If a condition exists but no error codes appear during the On-Board Diagnostics in Step 1, refer to Diagnosis When On-Board Diagnostics Indicates No Errors Found.
- The control assembly will detect electrical concerns occurring during the On-Board Diagnostics.
- Ensure that the engine is warm, at least 49°C (120°F) coolant temperature.
- To display the error codes for condition detection, initiate the On-Board Diagnostics by pushing OFF and FLOOR simultaneously and then AUTO within two seconds. The test may run as long as 20 seconds, during which time the display will be blank. If the display is blank for more than 20 seconds, go to EATC--When On-Board Diagnostics Indicates No Errors Found.
- The On-Board Diagnostics can be initiated at any time with the resulting error codes being displayed. Normal operation of the system stops when On-Board Diagnostics is activated. To exit the On-Board Diagnostics and restart the system, push the BLUE button. The On-Board Diagnostics should be deactivated before powering the system down. Refer to the Symptom Chart for an explanation of error codes.

NOTE: The in-vehicle temperature should be greater than 50°F (10°C) for all error codes shown to be valid.