DTC B1223: Power Window Switch Circuit on Passenger Door: Procedure

1. Remove the switch.
   Fig 1: Identifying Power Window Regulator Switch Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the switch when the switch is operated.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   3 (A) - 8 (PCT) 1 (U) - 8 (PCT)	AUTO UP	Below 1 Ω Below 1 Ω
   1 (U) - 8 (PCT)	UP	Below 1 Ω
   -	OFF	-
   6 (D) - 8 (PCT)	DOWN	Below 1 Ω
   3 (A) - 8 (PCT) 6 (D) - 8 (PCT)	AUTO DOWN	Below 1 Ω Below 1 Ω

NG → REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY 

OK: Go to next step 

Fig 2: Identifying P13 And P9 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the P13 switch connector.
2. Disconnect the P9 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   P13-1 (U) - P9-23 (MUP)	Below 1 Ω
   P13-3 (A) - P9-2 (AUTO)	Below 1 Ω
   P13-4 (E) - P9-29 (PWE)	Below 1 Ω
   P13-6 (D) - P9-25 (MDN)	Below 1 Ω
   P13-8 (PCT) - P9-20 (WLS1)	Below 1 Ω
   P13-1 (U) or P9-23 (MUP) - Body ground	10 kΩ or higher
   P13-3 (A) or P9-2 (AUTO) - Body ground	10 kΩ or higher
   P13-4 (E) or P9-29 (PWE) - Body ground	10 kΩ or higher
   P13-6 (D) or P9-25 (MDN) - Body ground	10 kΩ or higher
   P13-8 (PCT) or P9-20 (WLS1) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Remove the switch.
   Fig 3: Identifying Door Control Switch Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the switch when the switch is operated.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   2 (E) - 3 (L)	LOCK	Below 1 Ω
   -	OFF	-
   1 (UL) - 2 (E)	UNLOCK	Below 1 Ω

NG → REPLACE DOOR CONTROL SWITCH ASSEMBLY 

OK: Go to next step 

Fig 4: D10 Switch & P9 ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the D10 switch connector.
2. Disconnect the P9 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   D10-1 (UL) - P9-19 (MUL)	Below 1 Ω
   D10-2 (E) - P9-28 (DLE)	Below 1 Ω
   D10-3 (L) - P9-8 (ML)	Below 1 Ω
   D10-4 (ILL+) - P9-21 (PWS)	Below 1 Ω
   D10-1 (UL) or P9-19 (MUL) - Body ground	10 kΩ or higher
   D10-2 (E) or P9-28 (DLE) - Body ground	10 kΩ or higher
   D10-3 (L) or P9-8 (ML) - Body ground	10 kΩ or higher
   D10-4 (ILL+) or P9-21 (PWS) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH