CAN COMMUNICATION SYSTEM (for RHD), Diagnostic DTC:U1002

DESCRIPTION

• The driving support ECU assembly stores this DTC when no signals can be received from the ECUs that have been memorized as those connected to the parking assist bus circuit.

• When the driving support ECU assembly receives a response signal from the ECUs connected to the parking assist bus circuit, the driving support ECU assembly recognizes and memorizes that the ECU is connected to the parking assist bus circuit. Based on this memorized data, the driving support ECU assembly monitors for malfunctions in the ECUs connected to the parking assist bus circuit when communicating with those ECUs. If the driving support ECU assembly cannot receive response signals from the ECUs that have been memorized as those connected to the parking assist bus circuit, the driving support ECU assembly determines that a malfunction exists.

• If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [CAN branch wire]/CANL [CAN branch wire] of the ECU and/or sensor is open).

• *1: w/ Driver Monitor Camera

• *2: w/ Lane-keeping Assist System

• *3: w/ Pre-crash Intelligent Headrest

• *4: w/ Night View System

• For vehicles with a pre-crash safety system.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. PRECAUTION

   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.

   
   

   NEXT

2. 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 SRS system.

      Note

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

   
   

   NEXT

3. CHECK CAN BUS WIRE (CAN MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT)

   
   
   1. 

      Text in Illustration

      *a	Component with harness connected (No. 15 Junction Connector)
      *b	Front view of DLC3

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition Resistance: Malfunction R94-3 (CANH) - R94-2 (CANL) Engine switch off 54 to 69 Ω Below 53 Ω: Short in line R94-3 (CANH) - R94-2 (CANL) Engine switch off 54 to 69 Ω Higher than 70 Ω: Open in CAN main bus line R94-3 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short R94-2 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short R94-3 (CANH) - R94-1 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short R94-2 (CANL) - R94-1 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short

      Result

      Result	Proceed to
      NG Open in CAN main wire	A
      NG Short in line +B short Ground short	B
      OK	C

   
   

   B

   CHECK FOR SHORT IN CAN BUS WIRES (NO. 13 JUNCTION CONNECTOR SIDE) Click here

   C

   CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 NIGHT VIEW ECU) Click here

   A

4. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 13 JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 13 Junction Connector)

      Disconnect the No. 13 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition L96-9 (CANH) - L96-20 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

5. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 13 JUNCTION CONNECTOR - NO. 15 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 13 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition L96-11 (CANH) - L96-22 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

   REPLACE NO. 13 JUNCTION CONNECTOR

6. CONNECT CONNECTOR

   
   

   1. Reconnect the L96 No. 13 junction connector.

   
   

   NEXT

7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - NO. 13 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Millimeter Wave Radar Sensor Assembly)

      Disconnect the millimeter wave radar sensor assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition B9-4 (CA1P) - B9-3 (CA1N) Engine switch off 108 to 132 Ω

   
   

   NG

   REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MILLIMETER WAVE RADAR SENSOR (MILLIMETER WAVE RADAR SENSOR - NO. 13 JUNCTION CONNECTOR)

   OK

   REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

8. CONNECT CONNECTOR

   
   

   1. Reconnect the L96 No. 13 junction connector.

   
   

   NEXT

9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 14 JUNCTION CONNECTOR - NO. 15 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 14 Junction Connector)

      Disconnect the No. 14 junction connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition R93-5 (CANH) - R93-16 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

10. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 14 JUNCTION CONNECTOR - NO. 13 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-3 (CANH) - R93-14 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 14 JUNCTION CONNECTOR - NO. 13 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 14 JUNCTION CONNECTOR

11. CONNECT CONNECTOR

    
    

    1. Reconnect the R93 No. 14 junction connector.

    
    

    NEXT

12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 15 JUNCTION CONNECTOR - NO. 14 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 15 Junction Connector)

       Disconnect the No. 15 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R94-3 (CANH) - R94-2 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 15 JUNCTION CONNECTOR - NO. 14 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 15 JUNCTION CONNECTOR

13. CHECK FOR SHORT IN CAN BUS WIRES (NO. 13 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *a	Component with harness connected (No. 15 Junction Connector)
       *b	Front view of DLC3

       Disconnect the L96 No. 13 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R94-3 (CANH) - R94-2 (CANL) Engine switch off 108 to 132 Ω R94-3 (CANH) - R94-1 (GND) Engine switch off 200 Ω or higher R94-2 (CANL) - R94-1 (GND) Engine switch off 200 Ω or higher R94-3 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R94-2 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

14. CHECK FOR SHORT IN CAN BUS WIRES (NO. 13 JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 13 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L96-8 (CANH) - L96-19 (CANL) Engine switch off 200 Ω or higher L96-8 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher L96-19 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher L96-8 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher L96-19 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

15. CHECK FOR SHORT IN CAN BUS WIRES (NO. 13 JUNCTION CONNECTOR - DRIVER MONITOR ECU ASSEMBLY)

    Note

    For vehicles without a driver monitor camera, go to "Check for Short in CAN Bus Wires (No. 13 Junction Connector - Millimeter Wave Radar Sensor Assembly)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 13 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L96-10 (CANH) - L96-21 (CANL) Engine switch off 200 Ω or higher L96-10 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher L96-21 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher L96-10 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher L96-21 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

16. CHECK FOR SHORT IN CAN BUS WIRES (NO. 13 JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 13 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L96-9 (CANH) - L96-20 (CANL) Engine switch off 108 to 132 Ω L96-9 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher L96-20 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher L96-9 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher L96-20 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 13 JUNCTION CONNECTOR

17. CONNECT CONNECTOR

    
    

    1. Reconnect the L96 No. 13 junction connector.

    
    

    NEXT

18. CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Driving Support ECU Assembly)
       *b	Front view of DLC3

       Disconnect the driving support ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A33-40 (CA1P) - A33-39 (CA1N) Engine switch off 54 to 69 Ω A33-40 (CA1P) - L31-4 (CG) Engine switch off 200 Ω or higher A33-39 (CA1N) - L31-4 (CG) Engine switch off 200 Ω or higher A33-40 (CA1P) - L31-16 (BAT) Engine switch off 6 kΩ or higher A33-39 (CA1N) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CA1P, CA1N)

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

19. CONNECT CONNECTOR

    
    

    1. Reconnect the L96 No. 13 junction connector.

    
    

    NEXT

20. CHECK FOR SHORT IN CAN BUS WIRES (DRIVER MONITOR ECU ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Driver Monitor ECU Assembly)
       *b	Front view of DLC3

       Disconnect the driver monitor ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition L140-12 (CANH) - L140-11 (CANL) Engine switch off 54 to 69 Ω L140-12 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher L140-11 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher L140-12 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher L140-11 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVER MONITOR ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE DRIVER MONITOR ECU ASSEMBLY Click here

21. CONNECT CONNECTOR

    
    

    1. Reconnect the L96 No. 13 junction connector.

    
    

    NEXT

22. CHECK FOR SHORT IN CAN BUS WIRES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Millimeter Wave Radar Sensor Assembly)
       *b	Front view of DLC3

       Disconnect the millimeter wave radar sensor assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition B9-4 (CA1P) - B9-3 (CA1N) Engine switch off 108 to 132 Ω B9-4 (CA1P) - L31-4 (CG) Engine switch off 200 Ω or higher B9-3 (CA1N) - L31-4 (CG) Engine switch off 200 Ω or higher B9-4 (CA1P) - L31-16 (BAT) Engine switch off 6 kΩ or higher B9-3 (CA1N) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MILLIMETER WAVE RADAR SENSOR ASSEMBLY (CA1P, CA1N)

    OK

    REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

23. CONNECT CONNECTOR

    
    

    1. Reconnect the L96 No. 13 junction connector.

    
    

    NEXT

24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 14 JUNCTION CONNECTOR - NO. 13 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)
       *b	Front view of DLC3

       Disconnect the No. 14 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-3 (CANH) - R93-14 (CANL) Engine switch off 108 to 132 Ω R93-3 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R93-14 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R93-3 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R93-14 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 14 JUNCTION CONNECTOR - NO. 13 JUNCTION CONNECTOR)

    OK

25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 14 JUNCTION CONNECTOR - REAR MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

    Note

    For vehicles without a pre-crash intelligent headrest, go to "Check for Short in CAN Bus Wires (No. 14 Junction Connector - Object Recognition ECU)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-1 (CANH) - R93-12 (CANL) Engine switch off 200 Ω or higher R93-1 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R93-12 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R93-1 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R93-12 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 14 JUNCTION CONNECTOR - OBJECT RECOGNITION ECU)

    Note

    For vehicles without a lane-keeping assist system, go to "Check for Short in CAN Bus Wires (No. 14 Junction Connector - No. 1 Night View ECU)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-2 (CANH) - R93-13 (CANL) Engine switch off 200 Ω or higher R93-2 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R93-13 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R93-2 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R93-13 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 14 JUNCTION CONNECTOR - NO. 1 NIGHT VIEW ECU)

    Note

    For vehicles without a night view system, go to "Check for Short in CAN Bus Wires (No. 14 Junction Connector - No. 15 Junction Connector)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-4 (CANH) - R93-15 (CANL) Engine switch off 200 Ω or higher R93-4 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R93-15 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R93-4 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R93-15 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 14 JUNCTION CONNECTOR - NO. 15 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 14 Junction Connector)
       *b	Front view of DLC3

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R93-5 (CANH) - R93-16 (CANL) Engine switch off 108 to 132 Ω R93-5 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R93-16 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R93-5 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R93-16 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 15 JUNCTION CONNECTOR

29. CONNECT CONNECTOR

    
    

    1. Reconnect the R93 No. 14 junction connector.

    
    

    NEXT

30. CHECK FOR SHORT IN CAN BUS WIRES (REAR MILLIMETER WAVE RADAR SENSOR ASSEMBLY)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Rear Millimeter Wave Radar Sensor Assembly)
       *b	Front view of DLC3

       Disconnect the rear millimeter wave radar sensor assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R51-4 (CA1P) - R51-3 (CA1N) Engine switch off 54 to 69 Ω R51-4 (CA1P) - L31-4 (CG) Engine switch off 200 Ω or higher R51-3 (CA1N) - L31-4 (CG) Engine switch off 200 Ω or higher R51-4 (CA1P) - L31-16 (BAT) Engine switch off 6 kΩ or higher R51-3 (CA1N) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO REAR MILLIMETER WAVE RADAR SENSOR ASSEMBLY (CA1P, CA1N)

    OK

    REPLACE REAR MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

31. CONNECT CONNECTOR

    
    

    1. Reconnect the R93 No. 14 junction connector.

    
    

    NEXT

32. CHECK FOR SHORT IN CAN BUS WIRES (OBJECT RECOGNITION ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Object Recognition ECU)
       *b	Front view of DLC3

       Disconnect the object recognition ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition g1-16 (CANH) - g1-5 (CANL) Engine switch off 54 to 69 Ω g1-16 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher g1-5 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher g1-16 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher g1-5 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO OBJECT RECOGNITION ECU (CANH, CANL)

    OK

    REPLACE OBJECT RECOGNITION ECU Click here

33. CONNECT CONNECTOR

    
    

    1. Reconnect the R93 No. 14 junction connector.

    
    

    NEXT

34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 NIGHT VIEW ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 Night View ECU)
       *b	Front view of DLC3

       Disconnect the No. 1 night view ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition g2-8 (CA1P) - g2-9 (CA1N) Engine switch off 54 to 69 Ω g2-8 (CA1P) - L31-4 (CG) Engine switch off 200 Ω or higher g2-9 (CA1N) - L31-4 (CG) Engine switch off 200 Ω or higher g2-8 (CA1P) - L31-16 (BAT) Engine switch off 6 kΩ or higher g2-9 (CA1N) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 1 NIGHT VIEW ECU (CA1P, CA1N)

    OK

    REPLACE NO. 1 NIGHT VIEW ECU Click here

35. CONNECT CONNECTOR

    
    

    1. Reconnect the R93 No. 14 junction connector.

    
    

    NEXT

36. CHECK FOR SHORT IN CAN BUS WIRES (NO. 15 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 15 Junction Connector)
       *b	Front view of DLC3

       Disconnect the No. 15 junction connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition R94-3 (CANH) - R94-2 (CANL) Engine switch off 108 to 132 Ω R94-3 (CANH) - L31-4 (CG) Engine switch off 200 Ω or higher R94-2 (CANL) - L31-4 (CG) Engine switch off 200 Ω or higher R94-3 (CANH) - L31-16 (BAT) Engine switch off 6 kΩ or higher R94-2 (CANL) - L31-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 15 JUNCTION CONNECTOR - NO. 14 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 15 JUNCTION CONNECTOR

37. CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BATTERY AND BODY GROUND)

    
    
    1. 

       Text in Illustration

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

       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. Disconnect the driving support ECU assembly connector.

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

       Standard Voltage
       Tester Connection Switch Condition Specified Condition A33-13 (B) - Body ground Engine switch on (IG) 11 to 14 V

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

       Standard Resistance
       Tester Connection Condition Specified Condition A33-25 (GND) - Body ground Always Below 1 Ω

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here