DTC P0230: Fuel Pump Primary Circuit: Procedure

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

   HINT: 

   If there is fuel pressure, 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	Below 3 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 No. 2 relay block.
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 (F/PMP RELAY - ECM) 

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