Inspection Procedure

HINT:

• This procedure is based on the premise that the engine is started normally. If the engine is difficult to start, proceed to the PROBLEM SYMPTOMS TABLE  .
• Read freeze frame data using a Techstream. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. INSPECT ECM (FPR VOLTAGE) 
   1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Conditions	Specified Conditions
      FPR (B3-30) - E1 (B3-1)	STA signal ON	11 to 14 V
      	STA signal OFF (engine idling)	0to3V

      Fig 1: Identifying ECM Connectors

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Go to step 2 

   OK: REPLACE ECM  (See REMOVAL  )

2. INSPECT FUEL PUMP RELAY ASSEMBLY 
   1. Remove the fuel pump relay from the engine room relay block.
   Fig 2: Identifying Fuel Pump Relay Assembly
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      3-4	Below 1 Ω
      3-5	10 kΩ or higher
      3-4	10 kΩ or higher (when battery voltage applied to terminals 1 and 2)
      3-5	Below 1 Ω (when battery voltage applied to terminals 1 and 2)

   3. Reinstall the fuel pump relay.

   NG: REPLACE FUEL PUMP RELAY ASSEMBLY 

   OK: Go to Next Step 

3. CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - ECM) 
   1. Remove the fuel pump relay from the engine room relay block.
   Fig 3: Identifying Fuel Pump Relay Terminal And ECM Connectors Terminal
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Disconnect the B3 ECM connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      Fuel pump relay (1) - FPR (B3-30)	Below 1 Ω

      Standard Resistance (Check for short) 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      Fuel pump relay (1) or FPR (B3-30) - Body ground	10 kΩ or higher

   4. Reinstall the fuel pump relay.
   5. Reconnect the ECM connector.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM  (See REMOVAL  )