[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - SUNROOF - INSPECTION PROCEDURE F-3: Sunroof timer function does not work normally. <except vehicles for Australia>PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE F-3: Sunroof timer function does not work normally. <except vehicles for Australia>
 CAUTION
 Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the sunroof timer function does not work, the input circuit from the ignition switch (IG1) or the driver's door switch, the communication lines between the ETACS-ECU and the sunroof motor assembly (sunroof-ECU), the sunroof motor assembly (sunroof-ECU) or the ETACS-ECU may be defective.
POSSIBLE CAUSES
  • Malfunction of ETACS-ECU
  • Malfunction of the sunroof motor assembly (sunroof-ECU)
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Pulse check
Check the input signals from the ignition switch (IG1) and the driver's door switch.
System switch
 Check condition
Ignition switch (IG1)
 When turned from ACC to ON
Driver’s door switch
 When the driver’s door is opened

OK: The MUT-II/III sounds or the voltmeter needle fluctuates.
Q: Is the check result normal?
All the signals are received normally.:  Go to Step 2.
The ignition switch (IG1) signal is not received.:  Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."
The driver’s door switch signal is not received.:  Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <LH drive vehicles>." Refer to Inspection Procedure P-4 "The driver's door switch signal is not received <RH drive vehicles>."
Step 2. Connector check: D-09 sunroof motor assembly connector
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Repair the connector.
Step 3. Measure the voltage at the D-09 sunroof motor assembly connector.
  1. Disconnect the sunroof motor assembly connector, and measure at the harness side.
  1. Check the voltage between D-09 sunroof motor assembly connector terminal No.2 and body earth.
    2. OK: Battery positive voltage
Q: Is the check result normal?
YES:  Go to Step 5.
NO:  Go to Step 4.
Step 4. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.2 and the battery.
  • Check the power supply line 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.
Step 5. Connector check: C-219 ETACS-ECU connector
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Repair the connector.
Step 6. Check the wiring harness between D-09 sunroof motor assembly connector terminal No.10 and C-219 ETACS-ECU connector terminal No.59.
NOTE: Prior to the wiring harness inspection, check joint connector C-02 and intermediate connector C-218, and repair if necessary.
  • Check the communication lines for open 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 sunroof timer function work 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 sunroof motor assembly.
[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - SYMPTOM PROCEDURES - SUNROOF - INSPECTION PROCEDURE F-3: Sunroof timer function does not work normally. <except vehicles for Australia>PRINT PAGE / INDEX / PRIOR / NEXT
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