CAUTIONCOMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU calculates the intermittent wiper interval according to the vehicle speed
signal which is sent by the engine-A/T-ECU.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 vehicle speed signal (engine-A/T-ECU)
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Retest the system.
Q: Is the check result normal?
YES:
Go to Step 2
.NO: Refer to Inspection Procedure G-5 "The intermittent wiper interval can not be adjusted by operating the windshield intermittent wiper volume control
."Step 2. Pulse check
| System switch |
Check conditions |
|---|---|
| Ignition switch (ACC) |
When turned from LOCK (OFF) position to the ACC position |
| Vehicle speed signal (engine-A/T-ECU) |
When the vehicle speed has reached 10 km/h or more |
OK: The MUT-II/III sounds or the voltmeter needle fluctuates.
Q: Are the check result normal?
All the signals are received normally.:
Go to Step 3.The ignition switch (IG1) signal is not received.: Refer to inspection procedure P-1 "The ignition switch (ACC) signal is not received
."The vehicle speed signal (engine-A/T-ECU) is not received.: Refer to inspection procedure P-15 "The vehicle speed signal is not received
."Step 3. Check the SWS monitor customized function.
CAUTIONQ: Is the check result normal?
YES:
Go to Step 4.NO: Use the SWS monitor customize function to set the "SPEED SEN WIP" to "W.FUNCTION" (Refer to GROUP 54C - Adjustment function
).