Inspection Procedure

HINT:

This troubleshooting procedure is based on the premise that the engine is started. If the engine is not started, proceed to the PROBLEM SYMPTOMS TABLE  .

1. CHECK ECM (FPR VOLTAGE) 
   1. Measure the voltage of the ECM connectors.
      Fig 1: Identifying E3 And E6 ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      E6-15 (FPR) - E3-7 (E1)	STA signal ON	9 to 14 V
      E6-15 (FPR) - E3-7 (E1)	STA signal OFF	0 to 3 V

   NG: REPLACE ECM 

   OK: Go to next step 

2. INSPECT FUEL PUMP RELAY (Marking: F/PMP) 
   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 CHART
      
      

      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 

3. CHECK WIRE HARNESS (FUEL PUMP RELAY (Marking: F/PMP) - ECM) 
   1. Remove the fuel pump relay from the engine room No. 2 relay block.
   2. Disconnect the E6 ECM connector.
      Fig 3: Disconnecting E6 ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      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 AND CONNECTOR 

   OK: REPLACE ECM