StepINSPECTION
PROCEDURE F-3: Sunroof timer function does not work normally.
CAUTIONCOMMENTS 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. ECU check on the SWS monitor
- Ignition switch: ON
- Operate the sunroof switch.
ECUS TO BE CHECKED
- ETACS ECU
- SUNROOF ECU
OK: "OK" are displayed for all the items
Q: Are the check result normal?
"OK" are displayed for all the items:
Go to Step 2
."NG" is displayed on the "ETACS ECU" menu.: Refer to Inspection Procedure A-3 "Communication with the ETACS-ECU is not possible
.""NG" is displayed on the "SUNROOF ECU" menu.: Refer to Inspection Procedure A-6 "Communication with the sunroof motor assembly (sunroof-ECU) is not possible
."Step 2. Function diagnosis by using the SWS monitor
<Selected item>
ETACS ECU
- Ignition switch: OFF
| Item No. |
Item name |
Normal conditions |
|---|---|---|
| Item 30 |
IG SW(IG1) |
OFF |
| Item 32 |
DR DOOR SW |
From OFF to ON |
OK: Normal conditions displayed for all the items.
Q: Are the check result normal?
Normal conditions are displayed for all the items.:
Go to Step 3.Normal condition is not displayed for item No. 30: Refer to inspection procedure P-2 "The ignition switch (IG1) signal is not received
."Normal condition is not displayed for item No. 32: Refer to inspection procedure P-4 "The driver's door switch signal is not received
."Step 3. Function diagnosis by using the SWS monitor
<Selected item>
SUNROOF OPE
- Ignition switch: ON
| Item No. |
Item name |
Normal conditions |
|---|---|---|
| Item 72 |
S/R ECU ACK |
INPUT CHECK (only momentarily when switch is operated) |
OK: Normal condition is displayed.
Q: Is the check result normal?
YES:
Go to Step 4.NO: Replace the sunroof motor assembly.
Step 5. Measure the voltage at the D-09 sunroof motor assembly connector.
- Disconnect the sunroof motor assembly connector, and measure at the harness side.
- Ignition switch: ON
- Check the voltage between D-09 sunroof motor assembly connector terminal No.2 and body earth.
OK: Battery positive voltage
Q: Is the check result normal?
YES:
Go to Step 7.NO: Go to Step 6
.Step 6. Check the wiring harness between D-09 sunroof motor assembly
connector terminal No.2 and the ignition switch (IG2).
NOTE: Prior to the wiring harness inspection, check junction block connectors C-210 and C-203,
and repair if necessary.
- Check the power supply line to the ignition switch (IG2) 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 8. 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 9.NO: Repair the wiring harness.