Symptoms - Roof
Important: If the suspected cause of a sunroof malfunction is a power failure of the sunroof module, the sunroof must be recalibrated.
Important: The following steps must be completed before using the symptom tables.
1. View system operation to familiarize yourself with the functions of the system. See «General description and operation of the system» in this section.
Visual inspection / physical control
- Inspect aftermarket equipment that may affect the operation of the power sunroof system.
- Inspect easily accessible and visible parts of the system for obvious signs of damage or conditions that could lead to a malfunction.
Intermittent fault
Faulty electrical connections or wiring can cause intermittent faults. See Section 9A, "Body Wiring Systems".
List of symptoms
The symptom diagnostic procedure is described in the symptom diagnostic procedure. Cm. "Power sunroof not working".
Power sunroof not working
| Step | Operation | Values | Yes | No |
| 1 |
Re-calibrate the sunroof.
Is the system working properly?
|
-
|
Go to Step 2
|
|
| 2 |
Does the control lamp light up?
|
-
|
Go to Step 3
|
Go to Step 10
|
| 3 |
Is battery voltage present on all switch signal circuits?
|
-
|
Go to Step 8
|
Go to Step 4
|
| 4 |
Is battery voltage present on any switch signal circuits?
|
-
|
Go to Step 9
|
Go to Step 5
|
| 5 |
Does the control lamp light up?
|
-
|
Go to Step 6
|
Go to Step 11
|
| 6 |
Does the control lamp light up?
|
-
|
Go to Step 7
|
Go to Step 12
|
| 7 |
Connect a test lamp between the battery voltage circuit and the ground terminal at the sunroof motor/motor wiring harness connector.
Does the control lamp light up?
|
-
|
Go to Step 15
|
Go to Step 13
|
| 8 |
Connect a fused jumper wire between each switch signal circuit at the switch harness connector and ground.
Does the sunroof drive work when plugged in instead of a fused jumper switch?
|
-
|
Go to Step 14
|
Go to Step 15
|
| 9 |
Test the faulty switch signal circuit for an open or short to ground.
Has the cause been found and fixed?
|
-
|
Go to Step 18
|
Go to Step 15
|
| 10 |
Repair the open or high resistance in the sunroof control switch ground circuit.
Is the repair finished?
|
-
|
Go to Step 18
|
-
|
| 11 |
Repair the open or short to ground in the sunroof motor/motor battery voltage circuit.
Is the repair finished?
|
-
|
Go to Step 18
|
-
|
| 12 |
Repair the open or short to ground in the motor/sunroof ignition voltage signal circuit. See "section 9A, "Checking circuits and repairing wiring".
Is the repair finished?
|
-
|
Go to Step 18
|
-
|
| 13 |
Repair the open or high resistance in the sunroof motor/motor ground circuit.
Is the repair finished?
|
-
|
Go to Step 18
|
-
|
| 14 |
Inspect the sunroof switch harness connector for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 18
|
Go to Step 16
|
| 15 |
Inspect the sunroof motor/motor wiring harness connector for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 18
|
Go to Step 17
|
| 16 |
Replace sunroof switch. Go to "Power sunroof control switch"in this section.
Has the replacement been completed?
|
-
|
Go to Step 18
|
-
|
| 17 |
Replace sunroof motor.
Has the replacement been completed?
|
-
|
Go to Step 18
|
-
|
| 18 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 1
|
Recalibration
Conditions
Some customers complain that the sunroof does not close completely, or that it does not stop after reaching the closed position and continues to operate until the ventilation position is reached.
Description of recalibration
Sunroof control unit (SCU) designed to memorize the stages of closing and opening. However, the conditions described above may occur due to the loss of stored position data. The memorized position data may be lost when the operating current greatly exceeds the set operating current, 3.5 ~ 4.0 amps, because a foreign body has entered the sunroof rail or some object is blocking the sunroof from closing during operation.
SCU Recalibration Procedures
1. Hold down the switch towards the rear until the sunroof tilts open. With the sunroof fully open, release the switch.
1. Hold down the switch towards the rear until the sunroof tilts open. With the sunroof fully open, release the switch.
Important: If the sunroof opens slightly and stops, release, then press and hold the switch again. Repeat these steps until the sunroof is fully open.
2. If the sunroof stops during closing, push the switch forward and hold it to close the sunroof completely.
3. Press the switch towards the rear until the sunroof is fully open within 15 seconds.
4. Confirm the recalibration operations by performing the sunroof opening and closing processes.