CAUTIONCOMMENTS ON TROUBLE SYMPTOM
If the rear washer does not work normally, the input signal circuits to the rear washer
switch, rear washer motor or the ETACS-ECU may be defective.POSSIBLE CAUSES
- Malfunction of the rear washer motor
- Malfunction of the column switch
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 2. Function diagnosis by using the SWS monitor
<Selected item>
REAR WIPER-REAR WASHER
- Ignition switch: ACC
- Rear washer switch: ON
| Item No. |
Item name |
Normal conditions |
|---|---|---|
| Item 14 |
REAR WASH. SW |
ON |
OK: Normal condition is displayed.
Q: Is the check result normal?
YES:
Go to Step 3
.NO: Refer to inspection procedure P-6 "The column switch (windshield wiper washer and rear wiper washer switch) signal is not received
."Step 5. Measure the resistance at the A-27 rear washer motor connector.
- Disconnect the connector, and measure at the wiring harness side.
- Resistance between A-27 rear washer motor connector terminal No. 1 and body earth
OK: 2 Ω
or less
Q: Is the check result normal?
YES:
Go to Step 7.NO: Go to Step 6
.Step 6. Check the wiring harness between A-27 rear washer motor connector
terminal No. 1 and body earth.
- Check the earth line for open or short circuit.
Q: Is the check result normal?
YES:
The trouble can be an intermittent malfunction (Refer to GROUP 00 -
How
to Cope with Intermittent Malfunction ).NO: Repair the wiring harness.
Step 8. Check the wiring harness between C-220 ETACS-ECU connector
terminal No. 23 and A-27 rear washer motor connector terminal No. 2.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 and repair
if necessary.
- Check the power supply line for open or short circuit.
Q: Is the check result normal?
YES:
Go to Step 9.NO: Repair the wiring harness.