Diagnostic Starting Point - Wiper/Washer

DIAGNOSTIC STARTING POINT - WIPER/WASHER SYSTEMS

Begin headlamp washer system diagnosis with the Diagnostic System Check - Wiper/Washer. The Diagnostic System Check will provide the following
information:
- The identification of the control modules which command the system
- The ability of the control modules to communicate through the serial data circuit
- The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Begin the windshield wiper/washer system diagnosis by reviewing the system Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Wiper/Washer Systems in order to identify the correct procedure for diagnosing the system and where the procedure is located. [1][2]A Symptoms - Wiper/Washer Systems