Use the following procedure to troubleshoot the panoramic fixed moonroof with one-touch frosted glass control 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.*1
Measure the auxiliary battery voltage.*2
*1: for HV Model
*2: for Gasoline Model
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
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 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.
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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
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Check if the sliding roof drive gear sub-assembly has been replaced, or the roof sunshade housing assembly has been adjusted, or removed and installed.
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·
The roof sunshade ECU (sliding roof drive gear sub-assembly) replacement procedure has been performed. ·
The roof sunshade housing assembly has been adjusted or removed/installed. |
A |
·
The roof sunshade ECU (sliding roof drive gear sub-assembly) replacement procedure has not been performed. ·
The roof sunshade housing assembly has not been adjusted or removed/installed. |
B |
A
B
When the roof sunshade ECU (sliding roof drive gear sub-assembly) or The roof sunshade housing assembly has not been adjusted or removed/installed. is adjusted or removed/installed, it is necessary to perform initialization.
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