Inspection Procedure

INSPECT FUSE (MPX-B1, D/C CUT)
1. Remove the MPX-B1 fuse from the passenger side J/B.
2. Remove the D/C CUT fuse from the FL block.
3. Measure the resistance.
  Standard: Below 1 Ω
NG: REPLACE FUSE

OK: Go to next step.
CHECK WIRE HARNESS (REAR SEAT CONTROL SWITCH - BODY GROUND)
1. Disconnect the P54 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.
  Standard:
  
  Fig 1: Terminals Resistance And Voltage Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Checking Wire Harness (Rear Seat Control Switch - Body Ground)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )