Code No.05 Communication
Error with Power Window Main Switch <Vehicles for South
Africa>
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If diagnosis code No.05 is set in the ETACS-ECU,
diagnose
the CAN bus lines.
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The ETACS-ECU communicates with the power
window main switch through the SWS communication
lines. If there is any trouble in that communication, diagnosis code No.05
will be set.
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COMMENTS ON TROUBLE SYMPTOM
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If the power window main switch, the ETACS-ECU
or the CAN bus line fails, this diagnosis
code will be set.
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- Malfunction of the power window main switch
- Malfunction of the ETACS-ECU switch
- Malfunction of the CAN bus
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STEP 1. M.U.T.-III CAN bus diagnostics
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Use the M.U.T.-III to diagnose the CAN bus
lines.
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Q.
Is the check result normal?
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 Go to Step 2.
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 Repair
the CAN bus line (Refer to GROUP 54D - Troubleshooting  ).
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STEP 2. Check whether the diagnosis code is reset.
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Check again if the diagnosis code is
set.
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(1)Erase the diagnosis code.
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(2)Ignition switch: LOCK (OFF) position to ON
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(3)On completion, check that the diagnosis code is not
reset.
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Q.
Is the diagnosis code set?
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Go to Step 3.
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Intermittent malfunction (Refer to
GROUP 00 - How to use troubleshooting/Inspection
Service Points ).
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Check the input signal from the ignition
switch.
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System
switch
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Check
condition
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Ignition switch
(IG1)
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When turned from ACC to
ON
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OK: The M.U.T.-III sounds or the
voltmeter needle fluctuates.
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Q.
Is the check result normal?
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Go to Step 4.
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Diagnose the ETACS (Refer to GROUP 54A
- Input signal chart ).
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STEP 4. Connector check: F-02 power window main switch
connector
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Q.
Is the check result normal?
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Go to Step 5.
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Repair
the defective connector.
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STEP 5. Voltage measurement at the F-02 power window main switch
connector.
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(1)Disconnect the connector, and measure at the wiring
harness side.
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(3)Voltage between F-02 power window main switch connector
terminal No.6 and body
earth
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 14.
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Go to Step 6.
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STEP 6. Connector check: D-408 power window relay
connector
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Q.
Is the check result normal?
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Go to Step 7.
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Repair
the defective connector.
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STEP 7. Check the power window relay.
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Refer to GROUP 42 - On-vehicle Service .
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Q.
Is the check result normal?
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Go to Step 8.
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Replace the power window
relay.
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STEP 8. Voltage measurement at D-408 power window relay
connector.
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(1)Remove the power window relay, and measure at the junction
block side.
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(2)Voltage between D-408 power window relay connector
terminal No.5 and body earth
OK: System voltage
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Q.
Is the check result normal?
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Go to Step 10.
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Go to Step 9.
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STEP 9. Check the wiring harness between D-408 power window relay
connector terminal No.5 and fusible link (4).
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Prior to the wiring harness inspection, check
intermediate connector D-238 and junction
block connector D-403, and repair if necessary.
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- Check the power supply line for open circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use troubleshooting/Inspection Service Points ).
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Repair
the wiring harness.
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STEP 10. Resistance measurement at D-408 power window relay
connector.
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(1)Remove the power window relay, and measure at the junction
block side.
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(2)Resistance between D-408 power window relay connector
terminal No.3 and body earth
OK: Continuity exists (2 Ω
or less)
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Q.
Is the check result normal?
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Go to Step 12.
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Go to Step 11.
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STEP 11. Check the wiring harness between D-408 power window relay
connector terminal No.3 and body earth.
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Prior to the wiring harness inspection, check
junction block connector D-405, and repair
if necessary.
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- Check the earth wires for open circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use troubleshooting/Inspection Service Points ).
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Repair
the wiring harness.
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STEP 12. Connector check: D-419 ETACS-ECU connector
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Q.
Is the check result normal?
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Go to Step 13.
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Repair
the defective connector.
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STEP 13. Check the wiring harness between D-408 power window relay
connector terminal No.4 and F-02 power window main switch connector
terminal No.6.
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Prior to the wiring harness inspection, check
intermediate connector D-114 and junction
block connector D-403, and repair if necessary.
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- Check the power supply line for open circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use troubleshooting/Inspection Service Points ).
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Repair
the wiring harness.
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STEP 14. Resistance measurement at the F-02 power window main switch
connector.
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(1)Disconnect the connector, and measure at the wiring
harness side.
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(2)Resistance between F-02 power window main switch connector
terminal No.2 and body
earth
OK: Continuity exists (2 Ω or less)
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Q.
Is the check result normal?
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Go to Step 16.
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Go to Step 15.
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STEP 15. Check the wiring harness between F-02 power window main switch
connector terminal No.2 and body earth.
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Prior to the wiring harness inspection, check
intermediate connector D-114, and repair
if necessary.
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- Check the earth wires for open circuit.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use troubleshooting/Inspection Service Points ).
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Repair
the wiring harness.
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STEP 16. Connector check: D-420 ETACS-ECU connector
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Q.
Is the check result normal?
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Go to Step 17.
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Repair
the defective connector.
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STEP 17. Check the wiring harness between D-420 ETACS-ECU connector
terminal No.59 and F-02 power window main switch connector terminal
No.4.
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Prior to the wiring harness inspection, check
intermediate connector D-114, and repair
if necessary.
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- Check the communication lines for open circuit.
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Q.
Is the check result normal?
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Go to Step 18.
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Repair
the wiring harness.
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STEP 18. Check whether the diagnosis code is reset.
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Replace the power window main switch, and then
check that the diagnosis code is not reset.
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(1)Replace the power window main switch.
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(2)Erase the diagnosis code.
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(3)Ignition switch: LOCK (OFF) position to ON
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(4)On completion, check that diagnosis code No.05 is not
reset.
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Q.
Is diagnosis code No.05 set?
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Replace the ETACS-ECU.
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The
procedure is complete.
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