Inspection Procedure

NOTE:

When the front power window regulator motor assembly (for driver side) connector or the multiplex network master switch assembly connector is disconnected, the power window control system must be initialized (See CUSTOMIZE PARAMETERS ).
Since the power window control system has functions that use multiplex communication (BEAN), first confirm that there is no malfunction in the multiplex communication system by inspecting the multiplex communication functions in accordance with the How to Proceed with Troubleshooting procedure (See HOW TO PROCEED WITH TROUBLESHOOTING ). Then, conduct the following inspection procedure.

CHECK FUSES (FR DOOR LH, ECU-IG RH and MPX-B)

Remove the FR DOOR LH fuse from the main body ECU LH (cowl side junction block LH)
Remove the ECU-IG RH fuse from the main body ECU RH (cowl side junction block RH)
Remove the MPX-B fuse from the engine room relay block No 1

Measure the resistance according to the value(s) in the table below.

Standard Resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
FR DOOR LH fuse	Always	Below 1 Ω
ECU-IG RH fuse	Always	Below 1 Ω
MPX-B fuse	Always	Below 1 Ω

NG: REPLACE FUSE

OK: Go to next step

PERFORM ACTIVE TEST USING TECHSTREAM (DRIVER SIDE POWER WINDOW UP/DOWN)

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on
Enter the following menus. Body Electrical / Master Switch / Active Test.

Perform the Active Test according to the display on the Techstream.

Master Switch (Multiplex Network Master Switch Assembly)

ACTIVE TEST

Tester Display	Test Part	Control Range	Diagnostic Note
Driver Side Power Window	Driver side power window	UP/DOWN	-

OK: Driver side power window operates normally.

CAUTION: Be careful to avoid injuries as this test causes vehicle parts to move.
During the Active Test, the jam protection function will not operate.

NG: Go to step 3

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (See REMOVAL )

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - BODY GROUND AND BATTERY)

Disconnect the multiplex network master switch assembly connector

Measure the resistance according to the value(s) in the table below.

Standard Resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
M7-2 (GND) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Fig 1: Identifying Multiplex Network Master Switch Assembly Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Voltage

STANDARD VOLTAGE

Tester Connection	Condition	Specified Condition
M7-10 (BDR) - M7-2 (GND)	Always	11 to 14 V
M7-20 (SIG) - M7-2 (GND)	Engine switch off	Below 1 V
M7-20 (SIG) - M7-2 (GND)	Engine switch on (IG)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side)

Remove the front power window regulator motor assembly (for driver side) (See REMOVAL ).

Check power window regulator motor operation:

Apply battery voltage to connector terminals 1 and 2
NOTE: Do not apply battery voltage to any terminals except terminals 1 and 2.

Check that the motor gear rotates smoothly as follows.

MEASUREMENT CONDITION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) → 1 Battery negative (-) → 2	Motor gear rotates counterclockwise
Battery positive (+) → 2 Battery negative (-) → 1	Motor gear rotates clockwise

Check PTC operation

Fig 2: Identifying Front Power Window Regulator Motor Assembly (For Driver Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: This check must be performed with the power window regulator and door glass installed on the vehicle.
1. Install the front power window regulator motor assembly (for driver side) (See INSTALLATION ).
2. Connect an electrical tester DC 400 A probe to the wire harness of terminal 2.
  NOTE: Match the arrow mark of the probe with the direction of the current flow.
3. Fully close the door glass by pulling up the multiplex network master switch assembly. Wait for approximately 60 seconds.
4. Continue to pull up the multiplex network master switch assembly and measure how long it takes for the electrical current to change from a range of 16 to 28 A to approximately 1 A (current shut-off inspection).
  Standard: 4 to 90 seconds
  
  Fig 3: Identifying Front Power Window Regulator Motor Assembly Connector Terminals (For Driver Side)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Wait for 60 seconds after the previous step, and then press the multiplex network master switch assembly.
  OK: The driver side window goes down.

NG: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) (See REMOVAL )

OK: Go to next step

CHECK HARNESS AND CONNECTOR (MASTER SWITCH - REGULATOR MOTOR (for Driver Side))

Disconnect the front power window regulator motor assembly (for driver side) connector.

Measure the resistance according to the value(s) in the table below

Standard Resistance

STANDARD RESISTANCE

Tester Connection	Condition	Specified Condition
M7-1 (UP) - M3-2 (U)	Always	Below 1 Ω
M7-11 (DN) - M3-1 (D)	Always	Below 1 Ω
M7-1 (UP) - Body ground	Always	10 kΩ or higher
M7-11 (DN) - Body ground	Always	10 kΩ or higher

Fig 4: Identifying Front Power Window Regulator Motor Assembly (For Driver Side) Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (See REMOVAL )