Inspection Procedure 1: The sunshade does not work: Diagnosis

STEP 1. Scan tool data list

Check the ETACS-ECU service data related to the sunshade operation.

Turn the ignition switch to the ON position.

NORMAL CONDITION

Item No.	Item name	Normal conditions
Item 254	IG voltage	Battery voltage

OK: Normal conditions are displayed for all the items.

Q: Is the check result normal?

YES: Go to Step 2.
NO: Refer to INSPECTION PROCEDURE 2: THE IGNITION SWITCH (IG1) SIGNAL IS NOT RECEIVED .

STEP 2. Connector check: E-15 sunshade switch connector
Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Repair the damaged connector.
STEP 3. Sunshade switch check
Refer to SUNSHADE SWITCH CHECK .

Q: Is the sunshade switch normal?
- YES: Go to Step 4.
- NO: Replace the sunshade switch.
STEP 4. Resistance measurement at E-15 sunshade switch connector
1. Disconnect the connector, and measure the resistance at the wiring harness-side connector.
2. Measure the resistance between E-15 sunshade switch connector terminal No. 4 and body ground.
  OK: Continuity exists (2 Ω or less)
  
  Q: Is the check result normal?
  - YES: Go to Step 6.
  - NO: Go to Step 5.
STEP 5. Wiring harness check between E-15 sunshade switch connector terminal No. 4 and body ground
- Check the ground wires for open circuit.
  Q: Is the check result normal?
  - YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION (+)
  - NO: Repair the wiring harness.
STEP 6. Connector check: E-11 sunshade motor assembly connector
Q: Is the check result normal?
- YES: Go to Step 7.
- NO: Repair the damaged connector.
STEP 7. Resistance measurement at E-11 sunshade motor assembly connector
1. Disconnect the connector, and measure the resistance at the wiring harness-side connector.
2. Measure the resistance between E-11 sunshade motor assembly connector terminal No. 3 and body ground.
  OK: Continuity exists (2 Ω or less)
  
  Q: Is the check result normal?
  - YES: Go to Step 9.
  - NO: Go to Step 8.
STEP 8. Wiring harness check between E-11 sunshade motor assembly connector terminal No. 3 and body ground
- Check the ground wires for open circuit.
  Q: Is the check result normal?
  - YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION (+)
  - NO: Repair the wiring harness.
STEP 9. Voltage measurement at E-11 sunshade motor assembly connector
1. Turn the ignition switch to the "ON" position.
2. Disconnect the connector, and measure the voltage at the wiring harness-side connector.
3. Measure the voltage at E-11 sunshade motor assembly connector terminal No. 10.
  OK: Battery voltage
  
  Q: Is the check result normal?
  - YES: Go to Step 11.
  - NO: Go to Step 10.
STEP 10. Check the wiring harness between E-11 sunshade motor assembly connector terminal No. 10 and C-417 ETACS-ECU connector terminal No. 5.
NOTE: Before the wiring harness check, check C-226 intermediate connector and C-04 joint connector (2), then repair if necessary.
- Check the power supply line for open circuit and short circuit.
  Q: Is the check result normal?
  - YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION (+)
  - NO: Repair the wiring harness.
STEP 11. Voltage measurement at E-11 sunshade motor assembly connector
1. Disconnect the connector, and measure the voltage at the wiring harness-side connector.
2. Measure the voltage at E-11 sunshade motor assembly connector terminal No. 4.
  OK: Battery voltage
  
  Q: Is the check result normal?
  - YES: Go to Step 13.
  - NO: Go to Step 12.
STEP 12. Wiring harness check between sunshade motor assembly connector terminal No. 4 and fusible link
NOTE: Before the wiring harness check, check C-408 and C-416 ETACS-ECU connectors, and repair if necessary.
- Check the power supply line for open circuit and short circuit.
  Q: Is the check result normal?
  - YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION (+)
  - NO: Repair the wiring harness.
STEP 13. Retest the system.
Check that the sunshade lid works normally.

Q: Is the check result normal?
- YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION (+)
- NO: Replace the sunshade motor assembly.