REAR POWER SEAT CONTROL SYSTEM Power Source Circuit

DESCRIPTION

Power is supplied to the fold seat control ECU through the ECU-B NO.1, P/SEAT R/R, P/SEAT R/L and ECU-IG NO.1 fuses.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

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

   

   *A	Rear Right Seat
   *B	Rear Left Seat
   *a	Front view of wire harness connector (to Fold Seat Control ECU)

   
   

   1. Rear Right Seat:

      Disconnect the h3 and h4 fold seat control ECU connectors.

   2. Rear Left Side:

      Disconnect the i3 and i4 fold seat control ECU connectors.

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

      Standard Voltage
      Rear Right Seat Tester Connection Condition Specified Condition h4-1 (IND1) - Body ground Always 11 to 14 V h4-2 (+B) - Body ground Always 11 to 14 V h3-1 (ECUB) - Body ground Always 11 to 14 V h3-3 (IG) - Body ground Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V
      Rear Left Seat Tester Connection Condition Specified Condition i4-1 (IND1) - Body ground Always 11 to 14 V i4-2 (+B) - Body ground Always 11 to 14 V i3-1 (ECUB) - Body ground Always 11 to 14 V i3-3 (IG) - Body ground Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Rear Right Seat Tester Connection Condition Specified Condition h4-10 (GND) - Body ground Always Below 1 Ω h4-9 (GND2) - Body ground Always Below 1 Ω h3-40 (IND2) - Body ground Always Below 1 Ω
      Rear Left Seat Tester Connection Condition Specified Condition i4-10 (GND) - Body ground Always Below 1 Ω i4-9 (GND2) - Body ground Always Below 1 Ω i3-40 (IND2) - Body ground Always Below 1 Ω

      Result
      Result OK NG

   
   

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR