INSPECTION PROCEDURE 6: The intermittent wiper interval does not depend on vehicle speed.

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU calculates the intermittent wiper interval according to the vehicle speed signal which is sent by the combination meter.

If the intermittent wiper interval does not depend on the vehicle speed, the input circuit of the vehicle speed signal and the ETACS-ECU may be defective.

POSSIBLE CAUSES

Malfunction of the ETACS-ECU
Malfunction of the combination meter
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Retest the system.

Check that the windshield intermittent wiper interval can be adjusted by operating the windshield intermittent wiper volume control.

Q. Is the check result normal?

	Go to Step 2.

	Refer to Inspection Procedure 5 "The intermittent wiper interval cannot be adjusted by operating the windshield intermittent wiper volume control ."

Step 2. Check the combination meter.

Check that the speedometer works normally.

Ignition switch: ON

Q. Is the check result normal?

	Go to Step 3.

	Diagnose the combination meter (Refer to GROUP 54A, Combination meter ).

Step 3. Customize function.

Customize function to confirm that "Wiper speed-sensitive operation" is set to "With function".

Q. Is the check result normal?

	Go to Step 4.

	Use the customize function to set the "Wiper speed-sensitive operation" to "With function" (Refer to Customize function ).

Step 4. Retest the system.

(1)Replace the ETACS-ECU.

(2)Check that the vehicle speed-dependent intermittent wiper system should work normally.

Q. Is the check result normal?

	End of diagnosis.

	Replace the combination meter.