DTC P0230: Fuel Pump Primary Circuit: Procedure

1. Check if there is pressure in the fuel inlet hose.

   HINT: 

   There is fuel pressure if you will hear the sound of fuel flowing.

NG → See step   6 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A5-15 (FPR) - E4-7 (E1)	Cranking	11 to 14 V
   A5-15 (FPR) - E4-7 (E1)	Idling with warm engine	0 to 3.0 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (ECM)

NG → See step   3 

OK → See step   5 

1. Inspect the F/PMP relay. Refer to ON-VEHICLE INSPECTION [08/2012 - ] .

NG → REPLACE RELAY (F/PMP RELAY) 

OK: Go to next step 

1. Remove the F/PMP relay from the engine room relay block No. 2.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   F/PMP relay terminal 2 - A5-15 (FPR)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   F/PMP relay terminal 2 or A5-15 (FPR) - Body Ground	Always	10 kΩ or higher

4. Reinstall the F/PMP relay.
5. Reconnect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (F/PMP RELAY - C/OPN RELAY)