LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2007 >> Highlander Base, 2.4 D, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Can Communication System) >> Power Steering ECU Communication Stop Mode >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN BUS LINE FOR DISCONNECTION (POWER STEERING ECU BRANCH WIRE) 
    1. Disconnect the P8 power steering ECU connector.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      P8-1 (CANH) - P8-7 (CANL) Power switch OFF 54 to 69 Ω
      Fig 1: Checking CAN Bus Line For Disconnection (Power Steering ECU Branch Wire)
      G04477360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE POWER STEERING ECU BRANCH WIRE AND CONNECTOR (CANH, CANL) 

    OK : GO TO NEXT STEP 

  2. CHECK WIRE HARNESS (POWER STEERING ECU - BATTERY AND BODY GROUND) Wire Harness Side 
    1. Disconnect the P7 power steering ECU connector.
    2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION

      Tester Connection Specified Condition
      P7-2 (PGND) - Body ground Below 1 Ω
    3. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION - SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      P8-6 (IG) - Body ground Power switch ON (IG) 10 to 14 V
      Fig 2: Checking Wire Harness (Power Steering ECU - Battery And Body Ground) Wire Harness Side
      G04477361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : REPLACE POWER STEERING ECU 

scientia non olet · About LEMON Manuals