Use the following procedure to troubleshoot the panoramic moon roof system.
*: Use the GTS.
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In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:
| What | Vehicle model, system name |
| When | Date, time, occurrence frequency |
| Where | Road conditions |
| Under what conditions? | Driving conditions, weather conditions |
| How did it happen? | Problem symptoms |
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Measure the auxiliary battery voltage with the ignition switch off.
11 to 14 V
A simple method to determine whether the auxiliary battery is discharged is to operate the horn.
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
Check the fuses and relays.
Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
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Using the GTS, check for CAN communication system DTCs.
| Result | Proceed to |
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| CAN DTCs are not output | A |
| CAN DTCs are output (for HEV Model) | B |
| CAN DTCs are output (for Gasoline Model) | C |
A
B
C
Using the GTS, check for LIN communication system DTCs.
| Result | Proceed to |
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| LIN DTCs are not output | A |
| LIN DTCs are output | B |
A
B
Check for DTCs and make a note of any codes that are output.
Clear the DTCs.
Recheck for DTCs.
| Result | Proceed to |
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| DTCs are not output | A |
| DTCs are output | B |
A
B
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| Fault is not listed in Problem Symptoms Table | A |
| Fault is listed in Problem Symptoms Table | B |
A
B
Inspection
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Check if the sliding roof ECU (sliding roof drive gear sub-assembly) or roof sunshade ECU (sliding roof drive gear sub-assembly) has been replaced, or the sliding roof glass sub-assembly, sliding roof housing panel, slide roof rail sub-assembly or sunshade trim sub-assembly has been adjusted, or removed and installed.
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| The sliding roof ECU (sliding roof drive gear sub-assembly) or roof sunshade ECU (sliding roof drive gear sub-assembly) has been replaced, or the sliding roof glass sub-assembly, sliding roof housing panel, slide roof rail sub-assembly or sunshade trim sub-assembly has been adjusted, or removed and installed | A |
| The sliding roof ECU (sliding roof drive gear sub-assembly) and roof sunshade ECU (sliding roof drive gear sub-assembly) have not been replaced, and the sliding roof glass sub-assembly, sliding roof housing panel, slide roof rail sub-assembly and sunshade trim sub-assembly have not been adjusted, or removed and installed | B |
A
B
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