[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - CENTRAL DOOR LOCKING SYSTEM - INSPECTION PROCEDURE C-1: Central door locking system does not work. <LH drive vehicles>PRINT PAGE / INDEX / PRIOR / NEXT
CENTRAL DOOR LOCKING SYSTEM
INSPECTION PROCEDURE C-1: Central door locking system does not work. <LH drive vehicles>
 CAUTION
 Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
COMMENT ON TROUBLE SYMPTOM
If the central door locking system does not work at all, the driver's door lock actuator or the ETACS-ECU may be defective.
POSSIBLE CAUSES
  • Malfunction of the driver's door lock actuator
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. ECU check by using the SWS monitor
Check that the power supply and earth lines to the ETACS-ECU and the SWS communication lines are normal.
  • Ignition switch: OFF
ECU TO BE CHECKED
  • ETACS ECU
OK: "OK" is displayed on the "ETACS ECU" menu.
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Refer to Inspection Procedure A-3 "Communication with ETACS-ECU is not possible ."
Step 2. Pulse check
Check the input signal from the driver's door lock actuator switch.
System switch
 Check condition
Driver's door lock actuator switch
 When the driver's key cylinder or inside lock knob is unlocked or locked

OK: The MUT-II/III sound or the voltmeter needle fluctuate.
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Refer to Inspection Procedure P-15 "The driver's door lock actuator signal is not received ."
Step 3. Connector check: E-11 driver's door lock actuator connector
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the defective connector.
Step 4. Driver's door lock actuator check
Check that the driver's door lock actuator works normally. Refer to GROUP 42 - Door .
Q: Is the check result normal?
YES:  Go to Step 5.
NO:  Replace the driver's door lock actuator.
Step 5. Connector check: C-217 ETACS-ECU connector
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Repair the defective connector.
Step 6. Check the wiring harness between C-217 ETACS-ECU connector terminal No.2 and fusible link (1).
NOTE: Prior to the wiring harness inspection, check intermediate connector C-116 and junction block connector C-204, and repair if necessary.
  • Check the power supply line for open or short circuit.
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Repair the wiring harness.
Step 7. Retest the system.
Check that the central door locking system 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.
[54E] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - CENTRAL DOOR LOCKING SYSTEM - INSPECTION PROCEDURE C-1: Central door locking system does not work. <LH drive vehicles>PRINT PAGE / INDEX / PRIOR / NEXT
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