CAUTIONCOMMENTS ON TROUBLE SYMPTOM
Input signal from the ignition switch (ACC) is used to operate the functions below. If the signal is abnormal, these functions will not work normally.- Windshield wiper and washer
- Rear wiper and washer
- Electric-folding door mirror
- Interior lamp automatic shutdown function
POSSIBLE CAUSES
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 2. Measure the voltage at the C-217 ETACS-ECU connector.
- Remove the ETACS-ECU, and measure at the junction block side.
- Ignition switch: ACC position
- Voltage between C-217 ETACS-ECU connector terminal No.18 and body earth
OK: Battery positive voltage
Q: Is the check result normal?
YES:
Go to Step 4
.NO: Go to Step 3
.Step 3. Check the wiring harness between C-217 ETACS-ECU connector terminal No.18 and the ignition switch (ACC).
NOTE: Prior to the wiring harness inspection, check junction block connector C-203, and repair if necessary.
- Check the power supply line for open 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 4. Confirm communication data by using the SWS monitor.
<Selected item>
ETACS
- Ignition switch: ACC
| Item No. |
Item name |
Normal conditions |
|---|---|---|
| Item 31 |
IG SW(ACC) |
ON |
OK: Normal condition is displayed.
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: Replace the ETACS-ECU.