[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - INSPECTION PROCEDURE A-5: Communication with the power window main switch (power window module) is not possible.PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE A-5: Communication with the power window main switch (power window module) is not possible.
 CAUTION
 Whenever the ECU is replaced, ensure that the power supply circuit, the grounding circuit and the communication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
The power window main switch, the power supply circuit (power window relay driving circuit) or communication circuit for that switch may be defective.
POSSIBLE CAUSES
  • Malfunction of the power window main switch
  • Malfunction of the power window relay
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. ECU check on 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
ECUS TO BE CHECKED
  • ETACS
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 the ETACS-ECU is not possible" .
Step 2. Confirm communication data by using the SWS monitor.
<Selected item> ETACS
  • Ignition switch: ON
Item No.
 Item name
 Normal conditions
Item 30
 IGNITION SW IG1
 ON

OK: Normal condition is displayed.
Q: Is the check result normal?
YES:  Go to Step 3.
NO:  Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received" .
Step 3. Connector check: E-05 power window main switch connector
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Repair the defective connector.
Step 4. Measure the voltage at the E-05 power window main switch connector.
  1. Disconnect the connector, and measure at the wiring harness side.
  1. Ignition switch: ON
  1. Voltage between E-05 power window main switch connector terminal No.6 and body earth
    2. OK: Battery positive voltage
Q: Is the check result normal?
YES:  Go to Step 13.
NO:  Go to Step 5.
Step 5. Connector check: C-208 power window relay connector
Q: Is the check result normal?
YES:  Go to Step 6.
NO:  Repair the defective connector.
Step 6. Check the power window relay.
Refer to GROUP 42 - Door .
Q: Is the check result normal?
YES:  Go to Step 7.
NO:  Replace the power window relay.
Step 7. Measure the voltage at C-208 power window relay connector.
  1. Remove the power window relay, and measure at the junction block side.
  1. Voltage between C-208 power window relay connector terminal No.5 and body earth
    2. OK: Battery positive voltage
Q: Is the check result normal?
YES:  Go to Step 9.
NO:  Go to Step 8.
Step 8. Check the wiring harness between C-208 power window relay connector terminal No.5 and fusible link (5).
NOTE: Prior to the wiring harness inspection, check junction block connector C-203 and intermediate connectors A-14, C-126, and repair if necessary.
  • 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 9. Measure the resistance at C-208 power window relay connector.
  1. Remove the power window relay, and measure at the junction block side.
  1. Resistance between C-208 power window relay connector terminal No.3 and body earth
    2. OK: 2 Ω or less
Q: Is the check result normal?
YES:  Go to Step 11.
NO:  Go to Step 10.
Step 10. Check the wiring harness between C-208 power window relay connector terminal No.3 and body earth.
NOTE: Prior to the wiring harness inspection, check junction block connector C-205, and repair if necessary.
  • Check the earth wires for open circuit.
Q: Is the check result normal?
YES:  Go to Step 11.
NO:  Repair the wiring harness.
Step 11. Connector check: C-217 ETACS-ECU connector
Q: Is the check result normal?
YES:  Go to Step 12.
NO:  Repair the defective connector.
Step 12. Check the wiring harness between C-208 power window relay connector terminal No.4 and E-05 power window main switch connector terminal No.6.
NOTE: Prior to the wiring harness inspection, check junction block connector C-203, intermediate connectors C-30 and E-29, and repair if necessary.
  • Check the earth wires for open circuit.
Q: Is the check result normal?
YES:  Replace the ETACS-ECU.
NO:  Repair the wiring harness.
Step 13. Measure the resistance at the E-05 power window main switch connector.
  1. Disconnect the connector, and measure at the wiring harness side.
  1. Resistance between E-05 power window main switch connector terminal No.2 and body earth
    2. OK: 2 Ω or less
Q: Is the check result normal?
YES:  Go to Step 15.
NO:  Go to Step 14.
Step 14. Check the wiring harness between E-05 power window main switch connector terminal No.2 and body earth.
NOTE: Prior to the wiring harness inspection, check intermediate connectors C-30 and E-29, 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.
Step 15. Connector check: C-310 column switch connector
Q: Is the check result normal?
YES:  Go to Step 16.
NO:  Repair the defective connector.
Step 16. Check the wiring harness between C-310 column switch connector terminal No.3 and E-05 power window main switch connector terminal No.4.
NOTE: Prior to the wiring harness inspection, check joint connector C-02 and intermediate connectors C-30 and E-29, and repair if necessary.
  • Check the communication lines for open circuit.
Q: Is the check result normal?
YES:  Go to Step 17.
NO:  Repair the wiring harness.
Step 17. ECU check on the SWS monitor
Check that the power supply and earth lines to the power window main switch (power window module) and the SWS communication lines are normal.
  • Ignition switch: ON
ECUS TO BE CHECKED
  • P/W MODULE
OK: "OK" is displayed on the "P/W MODULE" menu.
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 power window main switch.
[54C] SMART WIRING SYSTEM (SWS) USING SWS MONITOR <Hong Kong spec.> - - SYMPTOM PROCEDURES - INSPECTION PROCEDURE A-5: Communication with the power window main switch (power window module) is not possible.PRINT PAGE / INDEX / PRIOR / NEXT
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