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INSPECTION PROCEDURE
P-5: The column switch (lighting and turn-signal lamp switch) signal is not received.
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|  CAUTION
Whenever the ECU is replaced,
ensure that the input signal circuit is normal.
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| COMMENTS ON TROUBLE SYMPTOM
Input signal from the column switch (lighting switch) is used to operate the functions
below. If the signal is abnormal, these functions will not work normally.
- Turn-signal lamp operation sound function
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| POSSIBLE CAUSES
- Malfunction of the column switch
- Damaged harness wires and connectors
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| Step 1. Check the column switch connector.
Check that the wiper and washer switch connector, the lighting switch connector and the
switch body connector are in good condition.
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Repair the connector.
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| Step 2. Check the column switch (lighting switch and switch body).
Refer to GROUP 54A -
Column switch  .
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Replace the column switch.
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| Step 3. Use the MUT-II/III to confirm a diagnosis code.
Check that the ETACS-ECU sets a diagnosis code.
Q: Is the check result normal?
YES:
Refer to diagnosis code chart .
NO:
Go to Step 4 .
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| Step 4. Retest the system.
Replace the column switch, and check if the column switch (lighting and turn-signal switch)
sends signal.
- Replace the column switch.
- Check if the column switch (lighting and turn-signal switch) sends signal.
Q: Is the check result normal?
YES:
The procedure is complete.
NO:
Replace the ETACS-ECU.
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