DTC P0230: Fuel Pump Primary Circuit: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying ECM (FRP Voltage)

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   Standard voltage

   Tester Connection	Condition	Specified Condition
   A14-6 (FPR) - E3-1 (E1)	STA signal ON	9 to 14 V
   A14-6 (FPR) - E3-1 (E1)	STA signal OFF	0 to 3 V

NG → See step   4 

OK: Go to next step 

1. Remove the F/PMP relay from the engine room No. 2 relay block.
   Fig 2: Inspecting Fuel Pump Relay (F/PMP)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   3 - 4	When no battery applied to terminals 1 and 2	Below 1 Ω
   3 - 4	When battery voltage is applied to terminals 1 and 2	10 kΩ or more

NG → See step   5 

OK: Go to next step 

Fig 3: Identifying F/PMP Relay And ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the F/PMP relay from the engine room No. 2 relay block.
2. Disconnect the A14 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 (2) - A14-6 (FPR)	Always	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Condition	Specified Condition
   F/PMP relay (2) or A14-6 (FPR) - Body Ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6