SLIDING ROOF SYSTEM Sliding Roof ECU Power Source Circuit

DESCRIPTION

If the sliding function and tilt function do not operate, there may be a malfunction in the sliding roof ECU power source circuit.

WIRING DIAGRAM

A01WR74E17

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ENGINE SWITCH SIGNAL)


    1. Use the Data List to check if the engine switch signal is functioning properly Click here.

      Sliding Roof
      Tester Display Test Part Control Range Diagnostic Note
      Ignition (Direct Signal) Engine switch signal/ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine switch off

      		 -
      Ignition (MPX) Engine switch signal (MPX signal)/ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine switch off

      		 -
      OK
      The intelligent tester displays as shown in the table according to the operation of each switch.

    OK

    REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) Click here

    NG

  2. INSPECT FUSE (S/ROOF, ECU-IG NO. 2)


    1. Remove the S/ROOF and ECU-IG No. 2 fuses from the main body ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S/ROOF fuse Always Below 1 Ω
      ECU-IG No. 2 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  3. CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR - BATTERY AND BODY GROUND)


    1. A01WR4GE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Sliding roof Drive Gear Sub-assembly [Sliding Roof ECU])

      Disconnect the sliding roof drive gear sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R17-12 (E) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R17-8 (B) - Body ground Always 11 to 14 V
      R17-1 (IG) - Body ground Engine switch off Below 1 V
      R17-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    OK

    REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR