DTC B1206: P/W Master Switch Communication Stop: Procedure

1. Disconnect the M17 connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   M17-8 (B) - Body ground	Always	11 to 14 V
   M17-10 (B) - Body ground	Always	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Connection
   M17-20 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Window Regulator Master Switch Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the L17 and Q36 connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M17-7 (MPX1) - Q36-23 (MPX1)	Always	Below 1 Ω
   M17-17 (MPX2) - L17-17 (MPX2)	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Window Regulator Master Switch Assembly)
   *2	Front view of wire harness connector (to Power Window Regulator Switch Assembly)
   *3	Front view of wire harness connector (to Metaltop Control ECU (Sliding Roof Control ECU Assembly))

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the power window regulator master switch assembly. Refer to REMOVAL [08/2012 - ] .

NEXT: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2012 - ] .
2. Recheck for DTCs.

   OK

   DTC B1206 is not output.

NG → See step   5 

OK → END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WAS DEFECTIVE)