CAN COMMUNICATION SYSTEM (for LHD with Entry and Start System), Diagnostic DTC:U1114

DESCRIPTION

• For vehicles with a multi-function switch.

INSPECTION PROCEDURE

PROCEDURE

1. 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 the CAN branch wire.

      CAUTION:

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

      Note:
      

      • After turning the engine 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).

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

   
   
   • NEXTClick here
2. Click here

   CHECK FOR OPEN IN CAN BUS WIRE (DRIVING SUPPORT SWITCH CONTROL ECU CAN BRANCH WIRE)

   
   

   1. for Automatic Transmission:

      
      
      1. 

         Disconnect the G163 driving support switch control ECU connector.

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

         Standard Resistance
         Tester Connection Switch Condition Specified Condition G163-2 (CANP) - G163-3 (CANN) Engine switch off 54 to 69 Ω

         Table 1. Text in Illustration

         *a	Front view of wire harness connector (to Driving Support Switch Control ECU)

   2. for Manual Transmission:

      
      
      1. 

         Disconnect the G76 driving support switch control ECU connector.

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

         Standard Resistance
         Tester Connection Switch Condition Specified Condition G76-9 (CANP) - G76-10 (CANN) Engine switch off 54 to 69 Ω

         Table 2. Text in Illustration

         *a	Rear view of wire harness connector (to Driving Support Switch Control ECU)

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT SWITCH CONTROL ECU - 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. for Automatic Transmission:

      
      
      1. 

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

         Standard Resistance
         Tester Connection Condition Specified Condition G163-7 (GND) - Body ground Always Below 1 Ω

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

         Standard Voltage
         Tester Connection Condition Specified Condition G163-8 (+B) - Body ground Always 11 to 14 V G163-10 (IG) - Body ground Engine switch on (IG) 11 to 14 V

      Table 3. Text in Illustration

      *a	Front view of wire harness connector (to Driving Support Switch Control ECU)

   3. for Manual Transmission:

      
      
      1. 

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

         Standard Resistance
         Tester Connection Condition Specified Condition G76-16 (GND) - Body ground Always Below 1 Ω

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

         Standard Voltage
         Tester Connection Condition Specified Condition G76-6 (+B) - Body ground Always 11 to 14 V G76-7 (IG) - Body ground Engine switch on (IG) 11 to 14 V

      Table 4. Text in Illustration

      *a	Rear view of wire harness connector (to Driving Support Switch Control ECU)

   
   
   • OKClick here
   • NGClick here
4. Click here

   REPAIR OR REPLACE DRIVING SUPPORT SWITCH CONTROL ECU CAN BRANCH WIRE OR CONNECTOR (CANP, CANN)

5. Click here

   REPLACE DRIVING SUPPORT SWITCH CONTROL ECUClick here

6. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR