WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla HV [01/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001H16S
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 09/2022]
Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the power window control system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

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

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

4.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM

5.	INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for LIN communication system DTCs.

Click here

Result	Proceed to
LIN DTCs are not output	A
LIN DTCs are output	B

GO TO LIN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Check for DTCs and make a note of any codes that are output.

Click here

Body Electrical > Master Switch > Trouble Codes

Body Electrical > D-Door Motor > Trouble Codes

Body Electrical > P-Door Motor > Trouble Codes

Body Electrical > RL-Door Motor > Trouble Codes

Body Electrical > RR-Door Motor > Trouble Codes

(b) Clear the DTCs.

Body Electrical > Master Switch > Clear DTCs

Body Electrical > D-Door Motor > Clear DTCs

Body Electrical > P-Door Motor > Clear DTCs

Body Electrical > RL-Door Motor > Clear DTCs

Body Electrical > RR-Door Motor > Clear DTCs

Body Electrical > Master Switch > Trouble Codes

Body Electrical > D-Door Motor > Trouble Codes

Body Electrical > P-Door Motor > Trouble Codes

Body Electrical > RL-Door Motor > Trouble Codes

Body Electrical > RR-Door Motor > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

GO TO STEP 9

8.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(d) Fail-safe Chart

Click here

(e) Inspection

9.	ADJUST, REPAIR OR REPLACE

(a) 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.

Result	Proceed to
Any of the power window regulator motor assembly, door window regulator sub-assembly, door belt moulding or door glass weatherstrip inner have been removed and installed, or if a power window regulator motor assembly have been removed and reinstalled.	A
The power window regulator motor assembly, door window regulator sub-assembly, door belt moulding or door glass weatherstrip inner have been removed and installed, or if a power window regulator motor assembly have not been removed and reinstalled.	B

GO TO STEP 11

10.	INITIALIZE POWER WINDOW CONTROL SYSTEM

(a) If any of the power window regulator motor assembly, door window regulator sub-assembly, front door belt moulding or front door glass weatherstrip inner have been removed and installed, or if a power window regulator motor assembly have been removed and reinstalled, perform "Initialize Power Window Control System" for the applicable door glass.

Click here

11.	CONFIRMATION TEST

END