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INSPECTION
PROCEDURE K-8: The wiper-linked auto lamp function does not work normally. |
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|  CAUTION
Whenever the ECU is replaced,
ensure that the input and output signal circuits are normal.
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| COMMENTS ON TROUBLE SYMPTOM
If this function does not work normally, the input signal circuit(s) below or the ETACS-ECU
may be defective.
- Automatic lighting switch
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| POSSIBLE CAUSES
- The lighting switch is defective
- The windshield wiper switch is defective.
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
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| Step 1. Customize function by using the SWS monitor
Use the SWS monitor customization function to confirm that "WIPR-LINK H/L" is
set to "W.FUNCTION."
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Use the SWS monitor customization function to set "WIPR-LINK H/L" to
"W.FUNCTION" (Refer to  ).
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| Step 2. Check the operation of the windshield wipers.
Check that the windshield wipers work normally by operating the relevant switches.
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Refer to inspection procedure G-1 "The windshield wipers do not work at all ."
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| Step 3. Checking auto lamp operation
Check that the auto lamp function works normally.
Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Refer to inspection procedure K-7 "The auto lamp function does not work normally ."
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| Step 4. Retest the system.
Check that the wiper-linked auto-lamp function works normally.
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.
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