Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - SUSPENSION CONTROL
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (EACH LEVELING VALVE AND ACCUMULATOR VALVE)
DTC C1764 Abnormal Leveling Valve Oil Pressure
DTC C1765 Abnormal Accumulator Valve Oil Pressure
DESCRIPTION
The solenoid valve is located in the No. 1 height control valve. When the vehicle height is adjusted, the fluid line is opened or closed according to the signal from the suspension control ECU. If the height control pump and motor activates when the fluid line is closed due to the solenoid valve malfunctioning, the solenoid valve being stuck, or foreign matter clogging the fluid line, fluid pressure increases abnormally. When this problem with the fluid pressure is detected, DTC C1764 and/or DTC C1765 is stored.
DTC Code | Detection Condition | Trouble Area |
C1764 | When the height control pump and motor activates and the fluid pressure is 18.5 MPa (188.6 kgf/cm2, 2683 psi) or more for 0.3 seconds. | No. 1 height control valve (Each solenoid valve is stuck) Clog in the fluid line Suspension control ECU |
C1765 | When the height control pump and motor activates and the fluid pressure is 18.5 MPa (188.6 kgf/cm2, 2683 psi) or more for 0.3 seconds. | No. 1 height control valve (Each solenoid valve is stuck) Clog in the fluid line Suspension control ECU |
INSPECTION PROCEDURE
- NOTICE:
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (EACH LEVELING VALVE AND ACCUMULATOR VALVE) |
Connect the intelligent tester to the DLC3.
Start the engine and turn the tester on.
Select the Active Test mode on the intelligent tester.
Check the operation sound of the solenoid or vibration of the leveling valve solenoid and accumulator valve solenoid when operating the solenoid with the intelligent tester.
Tester Display | Test Part | Control Range | Diagnostic Note |
Front Right Height Solenoid | Front height control solenoid valve RH | ON or OFF | Operation of solenoid can be heard. |
Front Left Height Solenoid | Front height control solenoid valve LH | ON or OFF | Operation of solenoid can be heard. |
Rear Right Height Solenoid | Rear height control solenoid valve RH | ON or OFF | Operation of solenoid can be heard. |
Rear Left Height Solenoid | Rear height control solenoid valve LH | ON or OFF | Operation of solenoid can be heard. |
Accumulator Valve | Accumulator solenoid valve | ON or OFF | Operation of solenoid can be heard. |
- OK:
- The operation sound of the solenoid should be heard or the vibration of the leveling valve solenoid or accumulator valve solenoid should be felt.
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OK | |
2.CHECK FLUID LINE |
Check if the fluid line is clogged.
- HINT:
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OK | ||
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