Inspection Procedure

NOTE: When using the intelligent tester to troubleshoot the LIN communication line: Connect the intelligent tester to the vehicle, and turn the courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

READ VALUE OF INTELLIGENT TESTER (LIN COMMUNICATION)

Use the Data List to check the function of the power window regulator master switch.

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: BODY / BODY ECU / DATA LIST / COM D-DOOR MTRr.
Read the indication displayed on the tester.

Main body ECU

MAIN BODY ECU CHECK

Item	Measurement Item / Display (Range)	Status
COM D-DOOR MTR	Connection status between power window regulator motor assembly (driver side) and main body ECU / OK or Stop	OK: Connection Stop: No connection

OK: OK is displayed on the intelligent tester screen.

NG: GO TO DATA LIST / ACTIVE TEST

OK: Go TO NEXT STEP.

CHECK OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF

Check the power window operation function after the ignition switch is turned off.

Result

RESULT REFERENCE

Status	Proceed to
When power window can still be operated even after opening driver door and passenger door within approximately 45 seconds of ignition switch being turned off	A
When power window can still be operated even after approximately 45 seconds have elapsed after ignition switch turned off	B

B: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side)

A: Go TO NEXT STEP.

READ VALUE OF INTELLIGENT TESTER (DOOR COURTESY LIGHT SWITCH)

Use the Data List to check the driver side door courtesy switch signal.

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: BODY / BODY ECU / DATA LIST / D DOR CTY SW.
Read the indication displayed on the tester.

Main body ECU

MAIN BODY ECU CHECK

Item	Measurement Item / Display (Range)	Status
D DOR CTY SW	Driver side door courtesy switch signal / ON or OFF	ON: Driver door open OFF: Driver door closed
P DOR CTY SW	Front passenger side door courtesy switch signal / ON or OFF	ON: Front passenger door open OFF: Front passenger door closed

OK: OK is displayed on the intelligent tester screen.

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

NG: Go TO NEXT STEP.

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY

Measure the resistance of the switch.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
1 - Switch body	Pushed	10 kΩ or higher
1 - Switch body	Not pushed	Below 1 Ω

Fig 1: Inspecting Front Door Courtesy Light Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE DOOR COURTESY LIGHT SWITCH ASSEMBLY

OK: Go TO NEXT STEP.

CHECK INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

Measure the voltage without removing the IA junction block connector.

Fig 2: Identifying Instrument Panel Junction Block Fuses

Standard voltage:

for Driver side

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Driver Door Condition	Specified Condition
IA-21 (DCTY) - Body ground	Fully closed	10 to 14 V
IA-21 (DCTY) - Body ground	Open	Below 1 V

for Passenger side

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Driver Door Condition	Specified Condition
IC-14 (PCTY) - Body ground	Fully closed	10 to 14 V
IC-14 (PCTY) - Body ground	Open	Below 1 V

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)