STEP 4. Resistance measurement at D-03 sunroof switch connector
(1)Disconnect the connector, and measure the resistance at the wiring harness-side
connector.
(2)Measure the resistance at the D-03 sunroof switch connector terminal No. 4 and
the body earth. OK: Continuity (less than 2 Ω)
Q.
Is the check result normal?
Go to Step 5.
Go to Step 6.
STEP 5. Check of the wiring harness between the D-03 sunroof switch
connector terminal No. 4 and the D-04 sunroof motor assembly connector terminal No. 1
Check the earth line for open circuit or short circuit.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
STEP 6. Connector check: D-04 sunroof motor assembly connector
Q.
Is the check result normal?
Go to Step 7.
Repair the defective connector.
STEP 7. Resistance measurement at D-04 sunroof motor assembly connector
(1)Disconnect the connector, and measure the resistance at the wiring harness-side
connector.
(2)Measure the resistance at the D-04 sunroof motor assembly connector terminal No.
2 and the body earth. OK: Continuity (less than 2 Ω)
Q.
Is the check result normal?
Go to Step 9.
Go to Step 8.
STEP 8. Check of the wiring harness between the D-04 sunroof motor
assembly connector terminal No. 2 and the body earth
Check the earth line for open circuit or short circuit.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
STEP 9. Voltage measurement at D-04 sunroof motor assembly connector
(1)Disconnect the connector, and measure the voltage at the wiring harness-side connector.
(2)Measure the voltage at the D-04 sunroof motor assembly connector terminal No. 6
and the body earth.
(3)OK: Battery positive voltage
Q.
Is the check result normal?
Go to Step 11.
Go to Step 10.
STEP 10. Check of the wiring harness between the D-04 sunroof motor
assembly connector terminal No. 6 and the fusible link (33)
note
Prior to the wiring harness inspection, check the C-309 and C-316 ETACS-ECU connectors,
and repair if necessary.
Check the power supply line for open circuit and short circuit.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
STEP 11. Voltage measurement at D-04 sunroof motor assembly connector
(1)Disconnect the connector, and measure the voltage at the wiring harness-side connector.
(2)Turn the ignition switch ON position.
(3)Measure the voltage at the D-04 sunroof motor assembly connector terminal No. 3
and the body earth.
(4)OK: Battery positive voltage
Q.
Is the check result normal?
Go to Step 13.
Go to Step 12.
STEP 12. Check of the wiring harness between the D-04 sunroof motor
assembly connector terminal No. 1 and the ignition switch (IG1).
note
Prior to the wiring harness inspection, check the C-317 ETACS-ECU connector and C-40 intermediate
connector, and repair if necessary.
Check the power supply line for open circuit and short circuit.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
STEP 13. Retest the system.
Check that the sunroof works normally.
Q.
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunction ).
)
)
)
)
)
)
)
Refer to diagnosis code chart 
.
Go to Step 2.