CAN COMMUNICATION SYSTEM ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode

DESCRIPTION

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   PRECAUTION

   Note:

   After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (Click here).

   
   
   • NEXTClick here
2. Click here

   DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

   
   

   1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

   
   
   • NEXTClick here
3. Click here

   CHECK FOR OPEN IN CAN BUS WIRE (BRAKE ACTUATOR ASSEMBLY CAN BRANCH WIRE)

   
   
   1. 

      Disconnect the A52*1 or A54*2 brake actuator assembly (VSC ECU) connector.

      
      

      • *1: for AD Series Engine

      • *2: for ZR Series Engine

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

      Standard Resistance
      for AD Series Engine
      Tester Connection Switch Condition Specified Condition A52-35 (CANH) - A52-14 (CANL) Ignition switch off 54 to 69 Ω
      for ZR Series Engine
      Tester Connection Switch Condition Specified Condition A54-35 (CANH) - A54-14 (CANL) Ignition switch off 54 to 69 Ω

      Table 1. Text in Illustration

      *1	for AD Series Engine
      *2	for ZR Series Engine
      *3	Front view of wire harness connector (to Brake Actuator Assembly)

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - BATTERY AND BODY GROUND)

   
   
   1. 

      Connect the cable to the negative (-) battery terminal.

      Note:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

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

      Standard Resistance
      for AD Series Engine
      Tester Connection Condition Specified Condition A52-1 (GND2) - Body ground Always Below 1 Ω A52-4 (GND1) - Body ground Always Below 1 Ω
      for ZR Series Engine
      Tester Connection Condition Specified Condition A54-1 (GND2) - Body ground Always Below 1 Ω A54-4 (GND1) - Body ground Always Below 1 Ω

   3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      for AD Series Engine
      Tester Connection Switch Condition Specified Condition A52-2 (+BM) - Body ground Always 11 to 14 V A52-3 (+BS) - Body ground Always 11 to 14 V A52-28 (IG1) - Body ground Ignition switch ON 11 to 14 V
      for ZR Series Engine
      Tester Connection Switch Condition Specified Condition A54-2 (+BM) - Body ground Always 11 to 14 V A54-3 (+BS) - Body ground Always 11 to 14 V A54-28 (IG1) - Body ground Ignition switch ON 11 to 14 V

      Table 2. Text in Illustration

      *1	for AD Series Engine
      *2	for ZR Series Engine
      *3	Front view of wire harness connector (to Brake Actuator Assembly)

   
   
   • OKClick here
   • NGClick here
5. Click here

   REPLACE BRAKE ACTUATOR ASSEMBLY (VSC ECU)Click here

6. Click here

   REPAIR OR REPLACE BRAKE ACTUATOR CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

7. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR