Self-Diagnostic Test Usage Procedures
- Before diagnosing an engine performance problem, refer to INTRODUCTION for diagnostic system functions, abilities and system diagnostic procedures.
- For Engine Control Module (ECM) connector terminal identification, See Figure. For component general location, See Figure.
- When performing specified DTC test, technician may be instructed to perform a specified trouble symptom inspection procedure, or check for possible cause by using the trouble symptom inspection table and then performing a specified inspection. Trouble symptom inspection table and trouble symptom inspection procedures are listed under TROUBLE SYMPTOMS .
- Technician may be instructed to check for defective terminals or connections at a specified component or connector. It may be necessary to consult wiring diagram to determine which terminal or connection to check for specified component.
- Technician may be instructed to perform scan tool service data inspection on a specified component. Scan tool is used to monitor operation of a specified component under a specified operating condition. Component operation is then compared to a normal operating range to determine if component is operating properly. Scan tool service data inspection procedure is listed after TROUBLE SYMPTOMS .
- When performing a specified trouble symptom inspection procedure, technician may be instructed to perform a scan tool actuator test on a specified component. See procedures under SCAN TOOL SERVICE DATA INSPECTION PROCEDURE .
NOTE:
In the following self-diagnostic tests, illustrations are courtesy of Chrysler Corp.