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Home >> Toyota >> 2008 >> Corolla LE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Can Communication System) >> Can Communication System >> Skid Control ECU Communication Stop Mode >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Turn the ignition switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
  • 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 any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT:

Operating the ignition switch, any other switches, or any doors triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  1. CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU BRANCH WIRE) 
    1. Turn the ignition switch off.
    2. Disconnect the skid control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      OPEN IN CAN BUS WIRE (SKID CONTROL ECU BRANCH WIRE)

      Tester Connection Condition Specified Value
      S1-11 (CANH)-S1-25 (CANL) Ignition switch off 54 to 69 Ω
    Fig 1: Identifying Skid Control ECU Connector Terminals
    G05132967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (SKID CONTROL ECU) 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (IG1, GND1, GND2) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      WIRE HARNESS (IG1, GND1, GND2) RESISTANCE

      Tester Connection Condition Specified Value
      S1-32 (GND1) - Body ground Always Below 1 Ω
      S1-1 (GND2) - Body ground Always Below 1 Ω
      Fig 2: Identifying Wire Harness Connector Terminals (IG1, GND1, GND2)
      G05132968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      WIRE HARNESS (IG1, GND1, GND2) VOLTAGE

      Tester Connection Condition Specified Value
      S1-46 (IG1) - Body ground Ignition switch on 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE BRAKE ACTUATOR 

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