DTC P1235: High Pressure Fuel Pump Circuit [11/2016 - ]: Procedure

1. Inspect the fuel pump assembly (for high pressure side).

   Refer to INSPECTION [11/2016 - ]

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump assembly (for high pressure side).

   Refer to INITIALIZATION [11/2016 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE). Refer to  REMOVAL [11/2016 - ] 

Result: 

OK 

See step  2

1. Disconnect the injector driver (EDU) connector.
2. Disconnect the fuel pump assembly (for high pressure side) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C79-3 (FP+) - C73-1 (FP+)	Always	Below 1 Ω
   C79-4 (FP-) - C73-2 (FP-)	Always	Below 1 Ω
   C79-3 (FP+) or C73-1 (FP+) - Body ground and other terminals	Always	10 kΩ or higher
   C79-4 (FP-) or C73-2 (FP-) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the injector driver (EDU) connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C80-8 (FPD) - C1-63 (FPD)	Always	Below 1 Ω
   C80-7 (FPF1) - C1-61 (FPF)	Always	Below 1 Ω
   C80-8 (FPD) or C1-63 (FPD) - Body ground and other terminals	Always	10 kΩ or higher
   C80-7 (FPF1) or C1-61 (FPF) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace the injector driver (EDU).

   Refer to REMOVAL [11/2016 - ]

NEXT 

See step  5

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs.

   Powertrain > Engine and ECT > Clear DTCs 

5. Turn the power switch off and wait for at least 30 seconds.
6. Turn the power switch on (IG).
7. Turn the Techstream on.
8. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
10. Read the DTCs.

    Powertrain > Engine and ECT > Trouble Codes 

    Result

    Result	Proceed to
    DTC is not output	A
    DTC P1235 is output	B

Result: 

A 

END 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [11/2016 - ]