INSPECT LEVEL SENSOR (UREA PUMP)
CHECK HARNESS AND CONNECTOR (LEVEL SENSOR (UREA PUMP) - UREA PUMP CONTROL ECU)
CHECK WHETHER DTC OUTPUT RECURS (DTC P203C OR P203D)
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
REPAIR OR REPLACE HARNESS OR CONNECTOR
DTC P203C Reductant Level Sensor Circuit Low |
DTC P203D Reductant Level Sensor Circuit High |
DESCRIPTION
The urea pump has a level sensor that detects the position of the surface of the fluid inside the urea tank in order to measure the remaining quantity of urea solution.When the remaining quantity of urea solution falls below a fixed value, a warning is displayed on the combination meter.
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 3 seconds or more | An open or short in the level sensor (urea pump) circuit for 3 seconds or more. (1 trip detection logic). |
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| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 3 seconds or more | An open or short in the level sensor (urea pump) circuit for 3 seconds or more. (1 trip detection logic) |
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| DTC No. | Data List |
| P203C P203D | Reductant Level |
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
| 1.INSPECT LEVEL SENSOR (UREA PUMP) |
Inspect the level sensor (urea pump) (LandCruiser RM000005UKY000X.html).
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| OK | |
| 2.CHECK HARNESS AND CONNECTOR (LEVEL SENSOR (UREA PUMP) - UREA PUMP CONTROL ECU) |
| *a | Front view of wire harness connector (to Level Sensor (Urea Pump)) | *b | Front view of wire harness connector (to Urea Pump Control ECU) |
Disconnect the level sensor (urea pump) connector.
Disconnect the urea pump control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition s2-13 (VLVI) - s3-60 (VCVL) Always Below 1 Ω s2-14 (LVI) - s3-59 (LVU) Always Below 1 Ω s2-6 (ELVI) - s3-58 (ELU) Always Below 1 Ω s2-13 (VLVI) or s3-60 (VCVL) - Body ground and other terminals Always 10 kΩ or higher s2-14 (LVI) or s3-59 (LVU) - Body ground and other terminals Always 10 kΩ or higher s2-6 (ELVI) or s3-58 (ELU) - Body ground and other terminals Always 10 kΩ or higher
Reconnect the urea pump control ECU connector.
Reconnect the level sensor (urea pump) connector.
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| OK | |
| 3.CHECK WHETHER DTC OUTPUT RECURS (DTC P203C OR P203D) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs (LandCruiser RM000000PDK1E5X.html).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and wait for 3 seconds or more.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Result: Result Proceed to DTC P203C or P203D is output A DTC is not output B
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| A | |
| 4.REPLACE UREA PUMP CONTROL ECU |
Replace the urea pump control ECU (LandCruiser RM000005UL6000X.html).
| NEXT | |
| 5.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Clear the DTCs (LandCruiser RM000000PDK1E5X.html).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG) and wait for 3 seconds or more.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Confirm that the DTC is not output again.
| NEXT | ||
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| 6.REPAIR OR REPLACE HARNESS OR CONNECTOR |
Repair or replace harness or connector.
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| 7.REPLACE UREA PUMP |
Replace the urea pump (LandCruiser RM000005UL0000X.html).
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