DTC P0627-12: Fuel Pump "A" Control Circuit Short to Battery [11/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT ECM (CHECK FOR SHORT)
*a Front view of wire harness connector
(to Fuel Pump Control ECU)- Disconnect the fuel pump control ECU connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition O66-2 (FPC) - Body ground Ignition switch ON Below 1 V Result
Proceed to OK NG
Result:
OK
REPLACE FUEL PUMP CONTROL ECU. Refer to REMOVAL [11/2022 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU - ECM)
- Disconnect the fuel pump control ECU connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition O66-2 (FPC) or A47-16 (FPC) - Other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [11/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR