CAN COMMUNICATION SYSTEM (for LHD with Entry and Start System), Diagnostic DTC:U1002

DESCRIPTION

• The power management control ECU stores this DTC when no signals can be received from the ECUs that have been memorized as those connected to the V2 bus.

• When the power management control ECU receives a response signal from the ECUs connected to the V2 bus, the power management control ECU recognizes and memorizes that the ECU is connected to the V2 bus. Based on this memorized data, the power management control ECU monitors for malfunctions in the ECUs connected to the V2 bus when communicating with those ECUs. If the power management control ECU cannot receive response signals from the ECUs that have been memorized as those connected to the V2 bus, the power management control ECU 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 [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

• *1: w/ Parking Assist Monitor System and/or Side Monitor System

• *2: w/ TOYOTA Parking Assist-sensor System (for 8 Sensor Type)

• *3: w/ Dynamic Radar Cruise Control System

• *4: w/ Kinetic Dynamic Suspension System

• *5: w/ Pre-crash Safety System

• *6: w/ Air Suspension System

• *7: w/ Adaptive Front-lighting System

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

   
   

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

      CAUTION:

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

   
   

   NEXT

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

   

   Text in Illustration

   *a	Component with harness connector (Power Management Control ECU)

   
   

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition Resistance: Malfunction G51-26 (CA2H) - G51-25 (CA2L) Engine switch off 54 to 69 Ω Below 54 Ω: Short in line Higher than 69 Ω: Open in CAN main bus line G51-26 (CA2H) - G51-1 (AM22) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short G51-25 (CA2L) - G51-1 (AM22) Engine switch off 6 kΩ or higher Below 6 kΩ: +B short G51-26 (CA2H) - G51-6 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short G51-25 (CA2L) - G51-6 (GND) Engine switch off 200 Ω or higher Below 200 Ω: Ground short

      Result

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

   
   

   B

   CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR SIDE) Click here

   C

   CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY AND BODY GROUND) Click here

   A

3. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 3 Junction Connector)

      Disconnect the G95 No. 3 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G95-1 (CANH) - G95-12 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

4. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 3 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G95-3 (CANH) - G95-14 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

   REPLACE NO. 3 JUNCTION CONNECTOR

5. CONNECT CONNECTOR

   
   

   1. Reconnect the G95 No. 3 junction connector connector.

   
   

   NEXT

6. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 1 Junction Connector)

      Disconnect the G98 No. 1 junction connector connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G98-2 (CANH) - G98-13 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   CONNECT CONNECTOR Click here

   OK

7. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to No. 1 Junction Connector)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G98-1 (CANH) - G98-12 (CANL) Engine switch off 108 to 132 Ω

   
   

   NG

   REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

   OK

   REPLACE NO. 1 JUNCTION CONNECTOR

8. CONNECT CONNECTOR

   
   

   1. Reconnect the G98 No. 1 junction connector connector.

   
   

   NEXT

9. CHECK FOR OPEN IN CAN BUS MAIN WIRE (POWER MANAGEMENT CONTROL ECU - NO. 1 JUNCTION CONNECTOR)

   
   
   1. 

      Text in Illustration

      *a	Rear view of wire harness connector (to Power Management Control ECU)

      Disconnect the G51 power management control ECU connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition G51-26 (CA2H) - G51-25 (CA2L) Engine switch off 108 to 132 Ω

   
   

   NG

   REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (NO. 1 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)

   OK

   REPLACE POWER MANAGEMENT CONTROL ECU Click here

10. CONNECT CONNECTOR

    
    

    1. Reconnect the G95 No. 3 junction connector connector.

    
    

    NEXT

11. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)

       Disconnect the A73 No. 4 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A73-1 (CANH) - A73-12 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

12. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A73-2 (CANH) - A73-13 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

13. CONNECT CONNECTOR

    
    

    1. Reconnect the A73 No. 4 junction connector connector.

    
    

    NEXT

14. CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)

       Disconnect the G102 No. 5 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G102-3 (CANH) - G102-2 (CANL) Engine switch off 108 to 132 Ω

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

15. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 Junction Connector)
       *b	Front view of DLC3

       Disconnect the A73 No. 4 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A73-2 (CANH) - A73-13 (CANL) Engine switch off 108 to 132 Ω A73-2 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A73-13 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A73-2 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A73-13 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

16. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - SUSPENSION CONTROL ECU)

    Tech Tips

    For vehicles without an air suspension system, go to "Check for Short in CAN Bus Wires (No. 4 Junction Connector - Headlight Swivel ECU)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 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 A73-3 (CANH) - A73-14 (CANL) Engine switch off 200 Ω or higher A73-3 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A73-14 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A73-3 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A73-14 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

17. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - HEADLIGHT SWIVEL ECU)

    Tech Tips

    For vehicles without an adaptive front-lighting system, go to "Check for Short in CAN Bus Wires (No. 4 Junction Connector - No. 5 Junction Connector)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 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 A73-4 (CANH) - A73-15 (CANL) Engine switch off 200 Ω or higher A73-4 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A73-15 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A73-4 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A73-15 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 4 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 A73-1 (CANH) - A73-12 (CANL) Engine switch off 108 to 132 Ω A73-1 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A73-12 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A73-1 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A73-12 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 4 JUNCTION CONNECTOR

19. CONNECT CONNECTOR

    
    

    1. Reconnect the A73 No. 4 junction connector connector.

    
    

    NEXT

20. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 3 Junction Connector)
       *b	Front view of DLC3

       Disconnect the G95 No. 3 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G95-3 (CANH) - G95-14 (CANL) Engine switch off 108 to 132 Ω G95-3 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G95-14 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G95-3 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G95-14 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    OK

21. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR SIDE)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 3 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 G95-1 (CANH) - G95-12 (CANL) Engine switch off 108 to 132 Ω G95-1 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G95-12 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G95-1 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G95-12 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

22. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - STABILIZER CONTROL ECU)

    Tech Tips

    For vehicles without a kinetic dynamic suspension system, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Seat Belt Control ECU)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 3 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 G95-5 (CANH) - G95-16 (CANL) Engine switch off 200 Ω or higher G95-5 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G95-16 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G95-5 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G95-16 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - SEAT BELT ECU)

    Tech Tips

    For vehicles without a pre-crash safety system, replace the No. 3 junction connector.

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 3 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 G95-6 (CANH) - G95-17 (CANL) Engine switch off 200 Ω or higher G95-6 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G95-17 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G95-6 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G95-17 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 3 JUNCTION CONNECTOR

24. CONNECT CONNECTOR

    
    

    1. Reconnect the G95 No. 3 junction connector connector.

    
    

    NEXT

25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 Junction Connector)
       *b	Front view of DLC3

       Disconnect the G98 No. 1 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G98-1 (CANH) - G98-12 (CANL) Engine switch off 108 to 132 Ω G98-1 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G98-12 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G98-1 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G98-12 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

    OK

26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - DRIVING SUPPORT ECU)

    Tech Tips

    For vehicles without a dynamic radar cruise control system, go to "Check for Short in CAN Bus Wires (No. 1 Junction Connector - Parking Assist ECU or Clearance Warning ECU Assembly)".

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 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 G98-4 (CANH) - G98-15 (CANL) Engine switch off 200 Ω or higher G98-4 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G98-15 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G98-4 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G98-15 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - PARKING ASSIST ECU OR CLEARANCE WARNING ECU)

    Tech Tips

    
    

    • For vehicles without any of the following systems, go to "Check for Short in CAN Bus Wires (No. 1 Junction Connector - Power Management Control ECU)".

    
    

    • Parking assist monitor system

    • Side monitor system

    • TOYOTA parking assist-sensor system (for 8 Sensor Type)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 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 G98-3 (CANH) - G98-14 (CANL) Engine switch off 200 Ω or higher G98-3 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G98-14 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G98-3 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G98-14 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

       Result

       Result	Proceed to
       OK	A
       NG (w/ Parking Assist Monitor System and/or Side Monitor System)	B
       NG (w/ TOYOTA Parking Assist-sensor System [for 8 Sensor Type])	C

    
    

    B

    CONNECT CONNECTOR Click here

    C

    CONNECT CONNECTOR Click here

    A

28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 1 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 G98-2 (CANH) - G98-13 (CANL) Engine switch off 108 to 132 Ω G98-2 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G98-13 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G98-2 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G98-13 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    CONNECT CONNECTOR Click here

    OK

    REPLACE NO. 1 JUNCTION CONNECTOR

29. CONNECT CONNECTOR

    
    

    1. Reconnect the A73 No. 4 junction connector connector.

    
    

    NEXT

30. CHECK FOR SHORT IN CAN BUS WIRES (SUSPENSION CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Suspension Control ECU)
       *b	Front view of DLC3

       Disconnect the A49 suspension control ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A49-7 (CANH) - A49-8 (CANL) Engine switch off 54 to 69 Ω A49-7 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A49-8 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A49-7 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A49-8 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SUSPENSION CONTROL ECU (CANH, CANL)

    OK

    REPLACE SUSPENSION CONTROL ECU Click here

31. CONNECT CONNECTOR

    
    

    1. Reconnect the A73 No. 4 junction connector connector.

    
    

    NEXT

32. CHECK FOR SHORT IN CAN BUS WIRES (HEADLIGHT SWIVEL ECU)

    
    
    1. 

       Text in Illustration

       *a	Front view of wire harness connector (to Headlight Swivel ECU Assembly [AFS ECU])
       *b	Front view of DLC3

       Disconnect the A58 headlight swivel ECU assembly (AFS ECU) connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition A58-12 (CANH) - A58-13 (CANL) Engine switch off 54 to 69 Ω A58-12 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher A58-13 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher A58-12 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher A58-13 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO HEADLIGHT SWIVEL ECU ASSEMBLY (CANH, CANL)

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY (AFS ECU) Click here

33. CONNECT CONNECTOR

    
    

    1. Reconnect the A73 No. 4 junction connector connector.

    
    

    NEXT

34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to No. 5 Junction Connector)
       *b	Front view of DLC3

       Disconnect the G102 No. 5 junction connector connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G102-3 (CANH) - G102-2 (CANL) Engine switch off 108 to 132 Ω G102-3 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G102-2 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G102-3 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G102-2 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

    OK

    REPLACE NO. 5 JUNCTION CONNECTOR

35. CONNECT CONNECTOR

    
    

    1. Reconnect the G95 No. 3 junction connector connector.

    
    

    NEXT

36. CHECK FOR SHORT IN CAN BUS WIRES (STABILIZER CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Stabilizer Control ECU)
       *b	Front view of DLC3

       Disconnect the G123 stabilizer control ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G123-29 (CANH) - G123-28 (CANL) Engine switch off 54 to 69 Ω G123-29 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G123-28 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G123-29 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G123-28 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STABILIZER CONTROL ECU (CANH, CANL)

    OK

    REPLACE STABILIZER CONTROL ECU Click here

37. CONNECT CONNECTOR

    
    

    1. Reconnect the G95 No. 3 junction connector connector.

    
    

    NEXT

38. CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Seat Belt Control ECU)
       *b	Front view of DLC3

       Disconnect the G118 seat belt control ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G118-1 (CANH) - G118-2 (CANL) Engine switch off 54 to 69 Ω G118-1 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher G118-2 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher G118-1 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher G118-2 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SEAT BELT CONTROL ECU (CANH, CANL)

    OK

    REPLACE SEAT BELT CONTROL ECU Click here

39. CONNECT CONNECTOR

    
    

    1. Reconnect the G98 No. 1 junction connector connector.

    
    

    NEXT

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

    
    
    1. 

       Text in Illustration

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

       Disconnect the G119 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 G119-39 (CA2H) - G119-17 (CA2L) Engine switch off 54 to 69 Ω G119-39 (CA2H) - G48-4 (CG) Engine switch off 200 Ω or higher G119-17 (CA2L) - G48-4 (CG) Engine switch off 200 Ω or higher G119-39 (CA2H) - G48-16 (BAT) Engine switch off 6 kΩ or higher G119-17 (CA2L) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU (CA2H, CA2L)

    OK

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

41. CONNECT CONNECTOR

    
    

    1. Reconnect the G98 No. 1 junction connector connector.

    
    

    NEXT

42. CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Parking Assist ECU)
       *b	Front view of DLC3

       Disconnect the I3 parking assist ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition I3-22 (CANH) - I3-21 (CANL) Engine switch off 54 to 69 Ω I3-22 (CANH) - G48-4 (CG) Engine switch off 200 Ω or higher I3-21 (CANL) - G48-4 (CG) Engine switch off 200 Ω or higher I3-22 (CANH) - G48-16 (BAT) Engine switch off 6 kΩ or higher I3-21 (CANL) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO PARKING ASSIST ECU (CANH, CANL)

    OK

    REPLACE PARKING ASSIST ECU Click here

43. CONNECT CONNECTOR

    
    

    1. Reconnect the G98 No. 1 junction connector connector.

    
    

    NEXT

44. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU)

    
    
    1. 

       Text in Illustration

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

       Disconnect the I1 clearance warning ECU assembly connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition I1-3 (R1) - I1-5 (R2) Engine switch off 54 to 69 Ω I1-3 (R1) - G48-4 (CG) Engine switch off 200 Ω or higher I1-5 (R2) - G48-4 (CG) Engine switch off 200 Ω or higher I1-3 (R1) - G48-16 (BAT) Engine switch off 6 kΩ or higher I1-5 (R2) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU (R1, R2)

    OK

    REPLACE CLEARANCE WARNING ECU ASSEMBLY Click here

45. CONNECT CONNECTOR

    
    

    1. Reconnect the G98 No. 1 junction connector connector.

    
    

    NEXT

46. CHECK FOR SHORT IN CAN BUS WIRES (POWER MANAGEMENT CONTROL ECU)

    
    
    1. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Power Management Control ECU)
       *b	Front view of DLC3

       Disconnect the G51 power management control ECU connector.

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

       Standard Resistance
       Tester Connection Switch Condition Specified Condition G51-26 (CA2H) - G51-25 (CA2L) Engine switch off 108 to 132 Ω G51-26 (CA2H) - G48-4 (CG) Engine switch off 200 Ω or higher G51-25 (CA2L) - G48-4 (CG) Engine switch off 200 Ω or higher G51-26 (CA2H) - G48-16 (BAT) Engine switch off 6 kΩ or higher G51-25 (CA2L) - G48-16 (BAT) Engine switch off 6 kΩ or higher

    
    

    NG

    REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (CA2H, CA2L)

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

47. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT 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. 

       Text in Illustration

       *a	Rear view of wire harness connector (to Power Management Control ECU)

       Disconnect the G51 power management control ECU connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition G51-5 (GND2) - Body ground Always Below 1 Ω G51-6 (GND) - Body ground Always Below 1 Ω

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

       Standard Voltage
       Tester Connection Condition Specified Condition G51-1 (AM22) - Body ground Always 11 to 14 V G51-2 (AM21) - Body ground Always 11 to 14 V

    
    

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here