DTC P0230: Fuel Pump Primary Circuit: Procedure

Fig 1: Checking ECM (FPR Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the voltage of the ECM connectors.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E6-15 (FPR) - E3-7 (E1)	STA signal ON	11 to 14 V
   E6-15 (FPR) - E3-7 (E1)	STA signal OFF	0 to 3 V

NG → See step   4 

OK: Go to next step 

Fig 2: Inspecting Fuel Pump Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the fuel pump relay from the engine room No. 2 relay block.
2. Measure the resistance of the fuel pump relay.

   Standard Resistance

   Tester Connection	Specified Condition
   3 - 4	Below 1 Ω
   3 - 4	10 kΩ or higher (when battery voltage is applied to terminals 1 and 2)

NG → REPLACE FUEL PUMP RELAY 

OK: Go to next step 

Fig 3: Disconnecting E6 ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the fuel pump relay from the engine room No. 2 relay block.
2. Disconnect the E6 ECM connector.
3. Measure the resistance of the wire harness side connectors.

   Standard Resistance

   Tester Connection	Specified Condition
   Relay block fuel pump relay terminal 1 - E6-15 (FPR)	Below 1 Ω
   Relay block fuel pump relay terminal 1 or E6-15 (FPR) - Body Ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5