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Home >> Scion >> 2009 >> xD Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication >> Can Communication System >> Steering Angle Sensor Communication Stop Mode >> Inspection Procedure

Inspection Procedure

NOTE:
  • Turn the ignition switch off before measuring the resistances of the CAN main wire and the CAN branch wire.
  • After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If doors need to be opened in order to check connectors, open the doors and leave them open.

    HINT:

    Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

  1. CHECK CAN BUS LINE FOR DISCONNECTION (STEERING SENSOR BRANCH WIRE) 
    1. Turn the ignition switch off.
    2. Disconnect the F33 steering sensor connector.
    3. Measure the resistance according to the value in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      F33-3 (CANH) - F33-2 (CANL) Ignition Switch off 54 to 69 Ω
    4. Reconnect the steering sensor connector.

    NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING SENSOR (CAN-H, CAN-L) 

    Fig 1: Identifying Steering Angle Sensor Connector Terminals
    G05403841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

  2. CHECK HARNESS AND CONNECTOR (IG, ESS) 
    1. Disconnect the F33 steering sensor connector.
    2. Measure the resistance according to the value in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      F33-1 (ESS) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      F33-4 (IG) - Body ground Ignition switch on 11 to 14V
    4. Reconnect the steering sensor connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying Steering Angle Sensor Connector Terminals
    G05403842Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE STEERING SENSOR  (See REMOVAL )

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