Fold Seat Switch Circuit: Procedure

1. Check the No. 1 fold seat switch signal.
   1. Remove the fold seat control ECU with its connectors still connected. Refer to REMOVAL [06/2012 - ] .

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   2. Measure the voltage according to the value(s) in the table below.
      STANDARD VOLTAGE FOR LH SIDE
      
      

      Tester Connection	Condition	Specified Condition
      d1-10 (FLD2) - Body ground	No. 1 fold seat switch LH off	11 to 14 V
      	No. 1 fold seat switch LH fold	Below 1 V
      d1-14 (RTN2) - Body ground	No. 1 fold seat switch LH off	11 to 14 V
      	No. 1 fold seat switch LH return	Below 1 V

      STANDARD VOLTAGE FOR RH SIDE
      
      

      Tester Connection	Condition	Specified Condition
      c1-10 (FLD2) - Body ground	No. 1 fold seat switch RH off	11 to 14 V
      	No. 1 fold seat switch RH fold	Below 1 V
      c1-14 (RTN2) - Body ground	No. 1 fold seat switch RH off	11 to 14 V
      	No. 1 fold seat switch RH return	Below 1 V

2. Check No. 2 fold seat switch signal.
   1. Remove the fold seat control ECU with its connectors still connected. Refer to REMOVAL [06/2012 - ] .

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   2. Measure the voltage according to the value(s) in the table below.
      STANDARD VOLTAGE FOR LH SIDE
      
      

      Tester Connection	Condition	Specified Condition
      d1-15 (RTRN) - Body ground	No. 2 fold seat switch LH off	11 to 14 V
      	No. 2 fold seat switch LH return	Below 1 V
      d1-16 (FOLD) - Body ground	No. 2 fold seat switch LH off	11 to 14 V
      	No. 2 fold seat switch LH fold	Below 1 V

      STANDARD VOLTAGE FOR RH SIDE
      
      

      Tester Connection	Condition	Specified Condition
      c1-15 (RTRN) - Body ground	No. 2 fold seat switch RH off	11 to 14 V
      	No. 2 fold seat switch RH return	Below 1 V
      c1-16 (FOLD) - Body ground	No. 2 fold seat switch RH off	11 to 14 V
      	No. 2 fold seat switch RH fold	Below 1 V

      TEXT IN ILLUSTRATION
      
      

      *A	for LH Side
      *B	for RH Side
      *a	Component with harness connected (Fold Seat Control ECU)

      RESULT
      
      

      Result	Proceed to
      OK	A
      NG (No. 1 fold seat switch signal)	B
      NG (No. 2 fold seat switch signal)	C

B → See step   2 

C → See step   4 

A → See step   6 

1. Remove the No. 1 fold seat switch. Refer to REMOVAL [06/2012 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE FOR LH SIDE
   
   

   Tester Connection	Switch Condition	Specified Condition
   6 (FLDL) - 7 (E)	No. 1 fold seat switch LH fold	Below 1 Ω
   	No. 1 fold seat switch LH off	10 kΩ or higher
   1 (RTNL) - 7 (E)	No. 1 fold seat switch LH return	Below 1 Ω
   	No. 1 fold seat switch LH off	10 kΩ or higher

   STANDARD RESISTANCE FOR RH SIDE
   
   

   Tester Connection	Switch Condition	Specified Condition
   8 (FLDR) - 7 (E)	No. 1 fold seat switch RH fold	Below 1 Ω
   	No. 1 fold seat switch RH off	10 kΩ or higher
   3 (RTNR) - 7 (E)	No. 1 fold seat switch RH return	Below 1 Ω
   	No. 1 fold seat switch RH off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *A	for LH Side
   *B	for RH Side

NG → See step   7 

OK: Go to next step 

1. Disconnect the d1*1 or c1*2 ECU connector.
   • *1: for LH Side
   • *2: for RH Side
2. Disconnect the Q11 switch connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE FOR LH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   d1-10 (FLD2) - Q11-6 (FLDL)	Always	Below 1 Ω
   d1-10 (FLD2) - Body ground	Always	10 kΩ or higher
   d1-14 (RTN2) - Q11-1 (RTNL)	Always	Below 1 Ω
   d1-14 (RTN2) - Body ground	Always	10 kΩ or higher

   STANDARD RESISTANCE FOR RH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   c1-10 (FLD2) - Q11-8 (FLDR)	Always	Below 1 Ω
   c1-10 (FLD2) - Body ground	Always	10 kΩ or higher
   c1-14 (RTN2) - Q11-3 (RTNR)	Always	Below 1 Ω
   c1-14 (RTN2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9 

1. Remove the No. 2 fold seat switch. Refer to REMOVAL [06/2012 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE FOR LH SIDE
   
   

   Tester Connection	Switch Condition	Specified Condition
   8 (FOLD) - 7 (E)	No. 2 fold seat switch LH fold	Below 1 Ω
   	No. 2 fold seat switch LH off	10 kΩ or higher
   3 (RTRN) - 7 (E)	No. 2 fold seat switch LH return	Below 1 Ω
   	No. 2 fold seat switch LH off	10 kΩ or higher

   STANDARD RESISTANCE FOR RH SIDE
   
   

   Tester Connection	Switch Condition	Specified Condition
   6 (FOLD) - 7 (E)	No. 2 fold seat switch RH fold	Below 1 Ω
   	No. 2 fold seat switch RH off	10 kΩ or higher
   1 (RTRN) - 7 (E)	No. 2 fold seat switch RH return	Below 1 Ω
   	No. 2 fold seat switch RH off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *A	for LH Side
   *B	for RH Side

NG → See step   8 

OK: Go to next step 

1. Disconnect the d1*1 or c1*2 ECU connector.
   • *1: for LH Side
   • *2: for RH Side
2. Disconnect the R15 switch connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE FOR LH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   d1-15 (RTRN) - R15-3 (RTRN)	Always	Below 1 Ω
   d1-15 (RTRN) - Body ground	Always	10 kΩ or higher
   d1-16 (FOLD) - R15-8 (FOLD)	Always	Below 1 Ω
   d1-16 (FOLD) - Body ground	Always	10 kΩ or higher

   STANDARD RESISTANCE FOR RH SIDE
   
   

   Tester Connection	Condition	Specified Condition
   c1-15 (RTRN) - R15-1 (RTRN)	Always	Below 1 Ω
   c1-15 (RTRN) - Body ground	Always	10 kΩ or higher
   c1-16 (FOLD) - R15-6 (FOLD)	Always	Below 1 Ω
   c1-16 (FOLD) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9