Wiper Switch: Testing and Inspection

Combination Switch (Wiper)

INSPECTION
- Inspect the continuity between each connector terminal.






Replace the switch if the inspection result is not within the standard value.

FRONT WIPER
1. Check with Subaru Select Monitor When the front wiper switch is operated, check the input signal using the Subaru Select Monitor.
1. Prepare the Subaru Select Monitor kit.
2. Turn the ignition switch to ON.
3. On {{System Selection Menu}} display, select {Integ. unit mode}.
4. Display {Current Data Display & Save}, and select {Front wiper input}.
5. Check the input signal when the front wiper switch is set to LO or HI.

Does the input signal switch to ON <- -> OFF normally?
- Yes -> Finish the diagnosis.
- No ->
1. Check the harness.
2. Check the wiper motor.
3. Check ACC input voltage of body integrated unit.

Connector & terminal (B281) No. 5 (+) - Chassis ground (-):

4. Replace the body integrated unit.

2. Check the intermittent operation (inspection of the wiper switch alone)
1. Set the voltage meter between terminal No. 7 (+) and No. 2 (-).
2. Connect the battery to connector. (Terminal No. 17 (+), terminal No. 2 & 16 (-))
3. Turn the front wiper switch to INT.
4. Connect the battery (+) to the terminal No. 16 for 5 seconds.
5. Connect the battery (-) to the terminal No. 16, and check the voltage between terminal No. 7 - No. 2 when performing the intermittent operation.
6. Perform step (1) to (5) above when intermittent control switch is in MIN or MAX, and replace the switch if the operation is not as specified.

Intermittent stationary time MIN: Approx. 4 seconds MAX: Approx. 19 seconds






REAR WIPER

1. Check with Subaru Select Monitor






2. Check rear wiper motor circuit