Reclining Motor Circuit: Procedure

1. for LH Side:

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Remove the No. 3 seatback frame sub-assembly LH. Refer to DISASSEMBLY [06/2012 - ] .
   2. Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.
2. for RH Side:
   1. Remove the No. 3 seatback frame sub-assembly RH. Refer to DISASSEMBLY [06/2012 - ] .
   2. Check if the No. 3 seatback frame moves smoothly when the battery is connected to the reclining motor connector terminals.
      OK
      
      

      Measurement Condition	Specified Condition
      Battery positive (+) → 3 (FWD) Battery negative (-) → 4 (BACK)	Forward
      Battery positive (+) → 4 (BACK) Battery negative (-) → 3 (FWD)	Backward

      RESULT
      
      

      Result	Proceed to
      OK (for LH Side)	A
      OK (for RH Side)	B
      NG (for LH Side)	C
      NG (for RH Side)	D

B → See step   4 

C → See step   7 

D → See step   8 

A: Go to next step 

1. Disconnect the d2 and d1 ECU connectors.
2. Disconnect the d3 No. 3 seatback frame connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   d1-37 (SV2) - d3-5 (HLV)	Always	Below 1 Ω
   d1-37 (SV2) - Body ground	Always	10 kΩ or higher
   d1-19 (SRCL) - d3-2 (HLS)	Always	Below 1 Ω
   d1-19 (SRCL) - Body ground	Always	10 kΩ or higher
   d1-24 (SG2) - d3-6 (HLG)	Always	Below 1 Ω
   d1-24 (SG2) - Body ground	Always	10 kΩ or higher
   d2-1 (RCL+) - d3-3 (FWD)	Always	Below 1 Ω
   d2-1 (RCL+) - Body ground	Always	10 kΩ or higher
   d2-5 (RCL-) - d3-4 (BACK)	Always	Below 1 Ω
   d2-5 (RCL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the fold seat control ECU LH 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
   
   

   Tester Connection	Condition	Specified Condition
   d1-37 (SV2) - d1-24 (SG2)	Engine switch off	Below 1 V
   	Engine switch on (IG)	5.5 to 8 V
   d1-19 (SRCL) - d1-24 (SG2)	Motor is operating	Pulse generation
   d2-1 (RCL+) - Body ground	Rear power seat switch LH forward	11 to 14 V
   d2-5 (RCL-) - Body ground	Rear power seat switch LH backward	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Fold Seat Control ECU LH)

NG → See step   7 

OK → See step   6 

1. Disconnect the c2 and c1 ECU connectors.
2. Disconnect the c3 No. 3 seatback frame connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   c1-37 (SV2) - c3-5 (HLV)	Always	Below 1 Ω
   c1-37 (SV2) - Body ground	Always	10 kΩ or higher
   c1-19 (SRCL) - c3-2 (HLS)	Always	Below 1 Ω
   c1-19 (SRCL) - Body ground	Always	10 kΩ or higher
   c1-24 (SG2) - c3-6 (HLG)	Always	Below 1 Ω
   c1-24 (SG2) - Body ground	Always	10 kΩ or higher
   c2-1 (RCL+) - c3-3 (FWD)	Always	Below 1 Ω
   c2-1 (RCL+) - Body ground	Always	10 kΩ or higher
   c2-5 (RCL-) - c3-4 (BACK)	Always	Below 1 Ω
   c2-5 (RCL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the fold seat control ECU RH 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
   
   

   Tester Connection	Condition	Specified Condition
   c1-37 (SV2) - c1-24 (SG2)	Engine switch off	Below 1 V
   	Engine switch on (IG)	5.5 to 8 V
   c1-19 (SRCL) - c1-24 (SG2)	Motor is operating	Pulse generation
   c2-1 (RCL+) - Body ground	Rear power seat switch RH forward	11 to 14 V
   c2-5 (RCL-) - Body ground	Rear power seat switch RH backward	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Fold Seat Control ECU RH)

NG → See step   8 

OK → See step   6