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INSPECTION PROCEDURE P-13: The driver's door lock actuator switch signal is not received. <LH drive vehicles>
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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 driver's door lock actuator is used to operate the functions below. If the signal is abnormal, these functions will not work normally.
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| POSSIBLE CAUSES
- Malfunction of the front door lock actuator (LH)
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
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| Step 1. Connector check: E-11 front door lock actuator (LH) connector
Q: Is the check result normal?
YES:
Go to Step 2  .
NO:
Repair the defective connector.
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| Step 2. Check the front door lock actuator (LH).
Refer to GROUP 42 -
Door  .
Q: Is the check result normal?
YES:
Go to Step 3  .
NO:
Replace the front door lock actuator (RH).
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| Step 3. Measure the resistance at the E-11 front door lock actuator (LH) connector.
- Disconnect the connector, and measure at the wiring harness side.
- Resistance between E-11 front door lock actuator (LH) connector terminal No.1 and body earth
OK: 2 Ω
or less
Q: Is the check result normal?
YES:
Go to Step 5  .
NO:
Go to Step 4  .
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| Step 4. Check the wiring harness between E-11 front door lock actuator (LH) connector terminal No.1 and body earth
NOTE: Prior to the wiring harness inspection, check intermediate connector C-118, and repair if necessary.
- Check the earth wires 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.
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| Step 5. Connector check: C-220 ETACS-ECU connector
Q: Is the check result normal?
YES:
Go to Step 6  .
NO:
Repair the defective connector.
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| Step 6. Check the wiring harness between E-11 front door lock actuator (LH) connector terminal Nos.2 and 3 and C-220 ETACS-ECU connector terminal Nos.35 and 36.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-118, and repair if necessary.
- Check the input line for open circuit.
Q: Is the check result normal?
YES:
Go to Step 7  .
NO:
Repair the wiring harness.
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| Step 7. Retest the system.
Check that the driver's door lock actuator switch signal is received 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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