Use the following procedure to troubleshoot the power window 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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If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.
The function "Read operation history" uses the current system time setting inside the GTS and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the GTS system clock is accurately set to the current time.
Read and save operation history using the GTS.
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| Vehicle Control History (RoB) |
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Measure the auxiliary battery voltage.*1
Measure the auxiliary battery voltage with the ignition switch off.*2
*1: for Gasoline Model
*2: for HV 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 CAN communication system DTCs.
| Result | Proceed to |
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| CAN DTCs are not output | A |
| CAN DTCs are output | B |
A
B
for Gasoline Model: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING202111,202203,_57,_111829,_0499998,RM100000001Z134,202203,202303,_57,_111829,_0499998,RM100000002205J,202303,999999,_57,_111829,_0499998,RM10000000291N8,
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
Refer to Problem Symptoms Table.
| Result | Proceed to |
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| Fault is not listed in problem symptoms table | A |
| Fault is listed in problem symptoms table | B |
A
B
Data List / Active Test
Inspection
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Check if any of the door window regulator sub-assemblies, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled.
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| Any of the door window regulator sub-assemblies, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled. | A |
| The door window regulator sub-assemblies, power window regulator motor assemblies, door glass and door glass runs have not been removed and reinstalled. | B |
A
B
If any of the door window regulator sub-assemblies, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled, initialize the power window control system.
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