Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CENTRAL GATEWAY ECU - NO. 3 CAN JUNCTION CONNECTOR)

CONNECT CONNECTOR

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 1 CAN JUNCTION TERMINAL - NO. 4 CAN JUNCTION CONNECTOR)

CONNECT CONNECTOR

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 3 CAN JUNCTION CONNECTOR)

CONNECT CONNECTOR

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 4 CAN JUNCTION CONNECTOR)

CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECU, SENSOR)

CAN COMMUNICATION SYSTEM (for LHD with Central Gateway ECU) - Check Bus 5 Line for Short to +B


DESCRIPTION

There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminal 15 (CA5H) of the central gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 16 (CA5L) of the central gateway ECU and terminal 16 (BAT) of the DLC3.

Detection Item
Trouble Area
No resistance exists between terminal 15 (CA5H) of the central gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 16 (CA5L) of the central gateway ECU and terminal 16 (BAT) of the DLC3.
  1. Short to +B in bus 5 CAN main wires
  2. Short to +B in bus 5 CAN branch wires
  3. Central gateway ECU
  4. Driving support ECU assembly*1
  5. Millimeter wave radar sensor assembly*1
  6. Forward recognition camera*1
  7. Inner rear view mirror assembly*2, *7
  8. Blind spot monitor sensor LH*3
  9. Clearance warning ECU assembly*4
  10. Parking assist ECU*5
  11. Suspension control ECU*6
  12. No. 3 CAN junction connector
  13. No. 4 CAN junction connector
  14. No. 1 CAN junction terminal
  1. *1: w/ Pre-crash Safety System
  2. *2: w/o Pre-crash Safety System
  3. *3: w/ Blind Spot Monitor System
  4. *4: w/ TOYOTA Parking Assist-sensor System
  5. *5: w/ Multi-terrain Monitor System
  6. *6: w/ Active Height Control Suspension
  7. *7: w/ Automatic High Beam System

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B


INSPECTION PROCEDURE

NOTICE:
  1. Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output (Click here).
  2. Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  3. 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).
  4. After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed (Click here).
HINT:
  1. Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
  2. Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
1.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CENTRAL GATEWAY ECU - NO. 3 CAN JUNCTION CONNECTOR)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B

  1. Disconnect the cable from the negative (-) battery terminal.

  1. Disconnect the central gateway ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E145-15 (CA5H) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E145-16 (CA5L) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Central Gateway ECU)
    *b
    		Front view of DLC3


NG
Go to step 2
OK

REPLACE CENTRAL GATEWAY ECU (Click here)

2.CONNECT CONNECTOR

  1. Reconnect the E145 central gateway ECU connector.


NEXT


3.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 1 CAN JUNCTION TERMINAL - NO. 4 CAN JUNCTION CONNECTOR)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B

  1. Disconnect the No. 1 CAN junction terminal connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    K50-3 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K50-2 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to No. 1 CAN Junction Terminal)
    *b
    		Front view of DLC3


NG
Go to step 4
OK

REPLACE NO. 1 CAN JUNCTION TERMINAL

4.CONNECT CONNECTOR

  1. Reconnect the K50 No. 1 CAN junction terminal connector.


NEXT


5.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 3 CAN JUNCTION CONNECTOR)


  1. Disconnect the No. 3 CAN junction connector.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B


    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 3 CAN Junction Connector)
    		*b
    		Front view of DLC3
    *c
    		to No. 4 CAN Junction Connector
    		*d
    		to Driving Support ECU Assembly (w/ Pre-crash Safety System)
    *e
    		to Central Gateway ECU
    		*f
    		to Millimeter Wave Radar Sensor Assembly (w/ Pre-crash Safety System)
    *g
    		to Clearance Warning ECU Assembly (w/ TOYOTA Parking Assist-sensor System)
    		*h
    		to Parking Assist ECU (w/ Multi-terrain Monitor System)
    *i
    1. to Forward Recognition Camera (w/ Pre-crash Safety System)
    2. to Inner Rear View Mirror Assembly (w/o Pre-crash Safety System, w/ Automatic High Beam System)
    		-
    		-

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    		Connect to
    E151-3 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		No. 4 CAN junction connector
    E151-13 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-4 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		Driving support ECU assembly*1
    E151-14 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-5 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		Central gateway ECU
    E151-15 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-6 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		Millimeter wave radar sensor assembly*1
    E151-16 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-7 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		Clearance warning ECU assembly*3
    E151-17 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-8 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    		Parking assist ECU*4
    E151-18 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E151-9 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    1. Forward recognition camera*1
    2. Inner rear view mirror assembly*2, *5
    E151-19 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    1. *1: w/ Pre-crash Safety System
    2. *2: w/o Pre-crash Safety System
    3. *3: w/ TOYOTA Parking Assist-sensor System
    4. *4: w/ Multi-terrain Monitor System
    5. *5: w/ Automatic High Beam System
    Result
    Result
    		Proceed to
    OK
    		A
    NG (Central gateway ECU CAN main wire)
    		B
    NG (No. 4 CAN junction connector CAN main wire)
    		C
    NG (ECU or sensor CAN branch wires)
    		D


B
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU)

C
Go to step 6

D
Go to step 8
A

REPLACE NO. 3 CAN JUNCTION CONNECTOR

6.CONNECT CONNECTOR

  1. Reconnect the E151 No. 3 CAN junction connector.


NEXT


7.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 4 CAN JUNCTION CONNECTOR)


  1. Disconnect the No. 4 CAN junction connectors.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B


    Text in Illustration
    *1
    		No. 4 CAN Junction Connector
    		-
    		-
    *a
    		Rear view of wire harness connector
    (to No. 4 CAN Junction Connector)
    		*b
    		Front view of DLC3

Code
Color (CANH Side)
Color (CANL Side)
Connect to
K56
W
B
No. 3 CAN Junction Connector
K57
SB
B
No. 1 CAN Junction Terminal
K58
R
B
Blind Spot Monitor Sensor LH*1
K65
L
B
Suspension Control ECU*2
  1. *1: w/ Blind Spot Monitor System
  2. *2: w/ Active Height Control Suspension

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    K56-1 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K56-2 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K57-1 (CANH) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K57-2 (CANL) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K58-1 (CANH) - E22-16 (BAT)*1
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K58-2 (CANL) - E22-16 (BAT)*1
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K65-1 (CANH) - E22-16 (BAT)*2
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    K65-2 (CANL) - E22-16 (BAT)*2
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    1. *1: w/ Blind Spot Monitor System
    2. *2: w/ Active Height Control Suspension
    Result
    Result
    		Proceed to
    OK
    		A
    NG (No. 3 CAN junction connector CAN main wire)
    		B
    NG (No. 1 CAN junction terminal CAN main wire)
    		C
    NG (ECU or sensor CAN branch wires)
    		D


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

C
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION TERMINAL)

D
Go to step 8
A

REPLACE NO. 4 CAN JUNCTION CONNECTOR

8.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECU, SENSOR)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Can Communication System (For Lhd With Central Gateway Ecu) Check Bus 5 Line For Short To +B

  1. Reconnect the CAN junction connector.

  1. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the bus line shorted to +B is connected

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E145-15 (CA5H) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    E145-16 (CA5L) - E22-16 (BAT)
    		Cable disconnected from negative (-) battery terminal
    		6 kΩ or higher
    Text in Illustration
    *a
    		Component with harness connected
    (Central Gateway ECU)
    *b
    		Front view of DLC3
    HINT:
    If the resistance changes to 6 kΩ or higher when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.


NG
REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN BRANCH WIRES OR CONNECTOR
OK

REPLACE CORRESPONDING ECU OR SENSOR