REAR POWER SEAT CONTROL SYSTEM(for Second Row) Power Source Circuit

DESCRIPTION

Power is supplied to the fold seat control ECU through the ECU-DCC NO. 2, P/SEAT R/R*1, P/SEAT R/L*2 and ECU-IG1 NO. 4 fuses.

• *1: for Rear RH Seat

• *2: for Rear LH Seat

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - BATTERY AND BODY GROUND)

   

   *A	for Rear RH Seat
   *B	for Rear LH Seat
   *a	Front view of wire harness connector (to Fold Seat Control ECU)

   
   

   1. Disconnect the x3*1 or y3*2 and x4*1 or y4*2 fold seat control ECU connectors.

      
      

      • *1: for Rear RH Seat

      • *2: for Rear LH Seat

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

      Standard Voltage
      for Rear RH Seat Tester Connection Condition Specified Condition x4-1 (IND1) - Body ground Always 11 to 14 V x4-2 (+B) - Body ground Always 11 to 14 V x3-1 (ECUB) - Body ground Always 11 to 14 V x3-3 (IG) - Body ground Engine switch off → on (IG) Below 1 V → 11 to 14 V
      for Rear LH Seat Tester Connection Condition Specified Condition y4-1 (IND1) - Body ground Always 11 to 14 V y4-2 (+B) - Body ground Always 11 to 14 V y3-1 (ECUB) - Body ground Always 11 to 14 V y3-3 (IG) - Body ground Engine switch off → on (IG) Below 1 V → 11 to 14 V

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

      Standard Resistance
      for Rear RH Seat Tester Connection Condition Specified Condition x4-10 (GND) - Body ground Always Below 1 Ω x4-9 (GND2) - Body ground Always Below 1 Ω x3-40 (IND2) - Body ground Always Below 1 Ω
      for Rear LH Seat Tester Connection Condition Specified Condition y4-10 (GND) - Body ground Always Below 1 Ω y4-9 (GND2) - Body ground Always Below 1 Ω y3-40 (IND2) - Body ground Always Below 1 Ω

      Result
      Result OK NG

   
   

   OK

   GO TO PROBLEM SYMPTOMS TABLE Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR