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Inspection Procedure

CHECK HAND-HELD TESTER

Monitor code
1. Using the hand-held tester, inspect the monitor code of the door ECU.

NOTE:

The monitor code shows the switch condition when a DTC is output.
When a monitor code is indicated while the switch is not operated, the switch is detected in being stuck.
When a monitor code is not indicated while the switch is operated, it is detected that the switch contact condition is bad.

DTC B1221/21 DEFINITION

DTC Code	Item	Monitor Item
B1221/21	Driver's Side Switch 1 (Operating)	Any Switch Of The Power Window Regulator Master Switch Is ON

NG : Go to step 3
OK : Go to Next Step

CHECK MULTIPLEX NETWORK BODY ECU
1. Inspect the output of the body ECU.
  1. Inspect the voltage between terminal 2 (GND) and each terminal of the door which body ECU is inoperative.
  Fig 1: Identifying Multiplex Network Body ECU Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Multiplex Network Body ECU Pin Voltage Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE:
- When an output to the passenger door is normal, proceed to OK-A . Go to step 3.
- When outputs to both rear doors are normal, proceed to OK-B . Go to step 4.
- When an output to either of the passenger door and both rear doors are abnormal, NG : REPLACE MULTIPLEX NETWORK BODY ECU .

OK-A

CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (PASSENGER SIDE)
1. Check the continuity.
  1. Check the continuity between each terminal of the connectors.
    
    Fig 3: Identifying Power Window Regulator Switch Connector Terminals (Passenger Side)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  Standard:
  
  Fig 4: Passenger Side Power Window Regulator Switch Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK : REPAIR OR REPLACE HARNESS AND CONNECTOR
2. NG : REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY

OK-B

CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY REAR (REAR RH & LH)
1. Check the continuity.
  1. Check the continuity between each terminal of the connectors.
  Fig 5: Identifying Power Window Regulator Switch Connector Terminals (RH & LH Rear)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 6: RH & LH Rear Power Window Regulator Switch Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK : REPAIR OR REPLACE HARNESS AND CONNECTOR
2. NG : REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY REAR