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 (see PROBLEM SYMPTOMS TABLE ).

1. CHECK ECM (FPR VOLTAGE) 
   1. Measure the voltage of the ECM connectors.

      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 

      Fig 1: Checking ECM (FPR Voltage)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to Next Step 

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

      Fig 2: Fuel Pump Relay Circuit Diagram

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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.
   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 

      Fig 3: Checking Wire Harness (Fuel Pump Relay - ECM)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE ECM