Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NETWORKING
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CHECK FOR OPEN IN CAN BUS WIRE (4WD CONTROL ECU CAN BRANCH WIRE)
CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BATTERY AND BODY GROUND)
CAN COMMUNICATION SYSTEM (for LHD) - 4WD Control ECU Communication Stop Mode
DESCRIPTION
| Detection Item | DTC Detection Condition | Trouble Area |
| 4WD Control ECU Communication Stop Mode | Either Condition is met: ""Four Wheel Drive Control" is not displayed on the "Bus Check" screen. "4WD Control ECU Communication Stop Mode" in "DTC Combination Table" applies. | Power source or inside of 4WD control ECU 4WD control ECU CAN branch wire or connector 4WD control ECU |
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
- HINT:
- Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
| 1.PRECAUTION |
- NOTICE:
- 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 ().
| NEXT | |
| 2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.
- CAUTION:
- For vehicles with an SRS system:
- Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
- NOTICE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected ().
| NEXT | |
| 3.CHECK FOR OPEN IN CAN BUS WIRE (4WD CONTROL ECU CAN BRANCH WIRE) |
Disconnect the A27 4WD control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Switch Condition Specified Condition A27-19 (CAN+) - A27-20 (CAN-) Ignition switch off 54 to 69 Ω
| *a | Front view of wire harness connector (to 4WD Control ECU) |
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| OK | |
| 4.CHECK HARNESS AND CONNECTOR (4WD CONTROL ECU - BATTERY AND BODY GROUND) |
Connect the cable to the negative (-) battery terminal.
- NOTICE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected ().
Disconnect the A28 4WD control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A28-4 (GND) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition A28-3 (IG) - Body ground Ignition switch ON 11 to 14 V
| *a | Front view of wire harness connector (to 4WD Control ECU) |
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| OK | ||
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