Scan Tool Testing and Procedures

WIPER AND WASHER SYSTEM: DATA LIST / ACTIVE TEST

DATA LIST / ACTIVE TEST

1. READ DATA LIST
HINT: Using the intelligent tester's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Read the Data List.

WIPER:





2. PERFORM ACTIVE TEST
HINT: Performing the intelligent tester's Active Test allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time. The Data List can be displayed during the Active Test.

(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Perform the Active Test.

WIPER:





3. FAIL-SAFE FUNCTION
(a) When the front wiper switch is in any position other than "OFF" and the wiper blades have been frozen, a malfunction is detected by the auto wiper ECU and the front wiper operation is stopped.