Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - SUSPENSION CONTROL
READ VALUE USING INTELLIGENT TESTER (OIL TEMPERATURE SENSOR)
CHECK HARNESS AND CONNECTOR (TEMPERATURE SENSOR - SUSPENSION CONTROL ECU)
INSPECT FLUID TEMPERATURE SENSOR
DTC C1719 Oil Temperature Sensor Circuit Malfunction
DESCRIPTION
This circuit is used for sending the data to detect the fluid temperature of the pump. The abnormality of the fluid is judged by the ECU.
| DTC Code | Detection Condition | Trouble Area |
| C1719 | When one of the following conditions is met: When detecting an abnormal signal from the fluid temperature sensor (fluid temperature sensor terminal voltage of ECU is 0.1 V or less or 4.8 V or higher) for 1 second. When there is a fluid temperature sensor power supply voltage malfunction. | Harness or connector Height control pump and motor (Fluid temperature sensor) Suspension control ECU |
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
| 1.READ VALUE USING INTELLIGENT TESTER (OIL TEMPERATURE SENSOR) |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG) and the tester on.
Select the Data List mode on the intelligent tester.
Check the fluid temperature value of the temperature sensor displayed on the intelligent tester.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Oil Temperature Sensor | Fluid temperature sensor reading / min.: -3276.8°C (-5866.24°F) max.: 3276.7°C (5930.06°F) | Actual fluid temperature | - |
- OK:
- Same as actual fluid temperature
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| OK | |
| 2.RECONFIRM DTC OUTPUT |
Clear the DTCs ().
Perform a road test.
Check for DTCs.
| Result | Proceed to |
| DTC C1719 is output | A |
| DTC C1719 is not output | B |
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| A | ||
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| 3.CHECK HARNESS AND CONNECTOR (TEMPERATURE SENSOR - SUSPENSION CONTROL ECU) |
- NOTICE:
- When inspecting the wire harness between the suspension control ECU and temperature sensor, it is difficult to determine the malfunctioning area if there is a sensor power supply malfunction. Therefore, disconnect the connectors for the temperature sensor, the acceleration sensors (front RH, front LH) and pressure accumulator sensor on the ECU side.
Disconnect the K34 and K35 ECU connectors.
Disconnect the i1 sensor connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition K35-17 (TOIL) - i1-2 (TOIL) Always Below 1 Ω K35-17 (TOIL) - Body ground Always 10 kΩ or higher K35-18 (STG) - i1-1 (SBL) Always Below 1 Ω K35-18 (STG) - Body ground Always 10 kΩ or higher
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| OK | |
| 4.INSPECT FLUID TEMPERATURE SENSOR |
Connect the i2 temperature sensor connector.
Disconnect the K34 and K35 ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition K35-17 (TOIL) - K35-18 (STG) 20°C (68°F) 2.32 to 2.59 kΩ
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| OK | ||
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