DTC P1235-13: High Pressure Fuel Pump Circuit Open [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)
Refer to INSPECTION [12/2023 - ]
Result
Proceed to OK NG Result:
NG
REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE). Refer to REMOVAL [12/2023 - ]
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) - ECM)
Pre-procedure1
- Disconnect the ECM connector.
- Disconnect the fuel (engine room side) pump assembly (for high pressure side) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result C14-1 (FP+) - C86-23 (FP1+) Always Below 1 Ω Ω C14-2 (FP-) - C86-22 (FP1-) Always Below 1 Ω Ω C14-1 (FP+) or C86-23 (FP1+) - Body ground and other terminals Always 10 kΩ or higher kΩ C14-2 (FP-) or C86-22 (FP1-) - Body ground and other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None.
Result:
OK
REPLACE ECM. Refer to REMOVAL [12/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR