Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NETWORKING
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CHECK FOR OPEN IN CAN BUS WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY CAN BRANCH WIRE)
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)
CAN COMMUNICATION SYSTEM (for LHD) - Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION
| Detection Item | Symptom | Trouble Area |
| Air Conditioning Amplifier Communication Stop Mode | Either condition is met: "Air Conditioning Amplifier" is not displayed on the "Bus Check" screen. "Air Conditioning Amplifier Communication Stop Mode" in "DTC Communication Table" applies. | Power source or inside of air conditioning amplifier assembly Air conditioning amplifier assembly CAN branch wire or connector Air conditioning amplifier assembly |
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 (AIR CONDITIONING AMPLIFIER ASSEMBLY CAN BRANCH WIRE) |
Disconnect the E35*1 or E81*2 air conditioning amplifier connector.
*1: w/ Rear Air Conditioning System
*2: w/o Rear Air Conditioning System
*2: w/o Rear Air Conditioning System
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
w/ Rear Air Conditioning System Tester Connection Switch Condition Specified Condition E35-3 (CANH) - E35-4 (CANL) Ignition switch off 54 to 69 Ω w/o Rear Air Conditioning System Tester Connection Switch Condition Specified Condition E81-11 (CANH) - E81-12 (CANL) Ignition switch off 54 to 69 Ω
| *A | w/ Rear Air Conditioning System |
| *B | w/o Rear Air Conditioning System |
| *a | Front view of wire harness connector (to Air Conditioning Amplifier Assembly) |
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| OK | |
| 4.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - 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 ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
w/ Rear Air Conditioning System Tester Connection Condition Specified Condition E36-1 (GND) - Body ground Always Below 1 Ω E36-2 (E1) - Body ground Always Below 1 Ω w/o Rear Air Conditioning System Tester Connection Condition Specified Condition E81-14 (GND) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
w/ Rear Air Conditioning System Tester Connection Condition Specified Condition E36-6 (+B1) - Body ground Always 11 to 14 V E36-7 (+B2) - Body ground Always 11 to 14 V E36-5 (IG+) - Body ground Ignition switch ON 11 to 14 V w/ Rear Air Conditioning System Tester Connection Condition Specified Condition E81-21 (+B1) - Body ground Always 11 to 14 V E81-1 (IG+) - Body ground Ignition switch ON 11 to 14 V
| *A | w/ Rear Air Conditioning System |
| *B | w/o Rear Air Conditioning System |
| *a | Front view of wire harness connector (to Air Conditioning Amplifier Assembly) |
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| OK | ||
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