DTC P1235-13: High Pressure Fuel Pump Circuit Open [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. 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)
- Inspect the fuel (engine room side) pump assembly (for high pressure side).
Refer to INSPECTION [10/2022 - ]
HINT:
Perform "Inspection After Repair" after replacing the fuel (engine room side) pump assembly (for high pressure side).
Refer to INITIALIZATION [10/2022 - ]
Result
Proceed to OK NG
Result:
NG
REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE). Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]
Result:
OK
See step 2
- Inspect the fuel (engine room side) pump assembly (for high pressure side).
- CHECK HARNESS AND CONNECTOR (FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) - ECM)
- 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 C31-2 (FP+) - C88-11 (FP1+) Always Below 1 Ω C31-1 (FP-) - C88-10 (FP1-) Always Below 1 Ω C31-2 (FP+) or C88-11 (FP1+) - Body ground and other terminals Always 10 kΩ or higher C31-1 (FP-) or C88-10 (FP1-) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR