Reading and Clearing Diagnostic Trouble Codes

1. Perform EATC Functional Test. Record all error codes displayed during test.

2. If error codes appear during EATC Functional Test, follow diagnosis procedures outlined in Error Code Key for each error code recorded.

3. If a malfunction exists but no error code appears during the test in Step 1, refer to Diagnosis when Self Test indicates No Error Found.






How to Use the System Problem Indication/Self-Test Feature


-The control assembly will detect electrical malfunctions occurring during the self test.


-Ensure that the engine is warm (at least 49°C (120°F) coolant temperature). To display the error codes for the malfunction detected, initiate the self test 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 System Diagnosis When Self Test and Functional Test Indicate NO ERROR.


-The self test can be initiated at any time with the resulting error codes being displayed. Normal operation of the system stops when Self Test is activated. To exit the self test and restart the system, push the COOLER button. The self test should be deactivated before powering the system down. Refer to the Error Code Key for an explanation of error codes. Diagnostic Trouble Code Tests and Associated Procedures