Fuel Pump Control Circuit [08/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
5. Check whether the fuel pump operation sound occurs when performing the Active Test on the Techstream.

   OK

   Fuel pump operating sound occurs.

Result:  OK

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(See article. Refer to PROBLEM SYMPTOMS TABLE [08/2014 - ] )

Result:  NG

NG 

See step  2

1. Inspect the No. 2 integration relay (C/OPN relay) (See article. Refer to INSPECTION [08/2014 - ] ).

Result:  NG

NG 

REPLACE NO. 2 INTEGRATION RELAY (C/OPN RELAY) 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  OK

OK 

See step  3

1. Disconnect the ECM connector.
2. Remove the No. 2 integration relay (C/OPN relay) from the engine room relay block and junction block assembly.
3. Disconnect the No. 2 integration relay connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1B-7 - A60-8 (FC)	Always	Below 1 Ω

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  4

1. Remove the No. 2 integration relay (C/OPN relay and IG2 relay) from the engine room relay block and junction block assembly.
2. Disconnect the No. 2 integration relay connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1B-6 - 1A-4	Always	Below 1 Ω

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  5

1. Disconnect the fuel pump connector.
2. Remove the No. 2 integration relay (C/OPN relay) from the engine room relay block and junction block assembly.
3. Disconnect the No. 2 integration relay connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1B-8 - P9-4 (B)	Always	Below 1 Ω

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  6

1. Disconnect the fuel pump connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P9-5 (E) - Body ground	Always	Below 1 Ω

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  7

1. Inspect the fuel pump (See article. Refer to INSPECTION [08/2014 - ] ).

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump (See article. Refer to INITIALIZATION [08/2014 - ] ).

Result:  NG

NG 

REPLACE FUEL PUMP 

(See article. Refer to REMOVAL [08/2014 - 06/2016] Refer to REMOVAL [06/2016 - ] )

Result:  OK

OK 

See step  8

1. Check the ECM power source circuit (See article. Refer to ECM Power Source Circuit [08/2014 - ] ).

Result:  OK

OK 

REPLACE ECM 

(See article. Refer to REMOVAL [08/2014 - ] )

Result:  NG

NG 

REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT