Inspection Procedure

HINT:

• This DTC table is on the premise that the engine is started normally. If the engine is difficult to start, proceed to PROBLEM SYMPTOMS TABLE  .
• Read freeze frame data using an intelligent tester. 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. CHECK ECM (FPR VOLTAGE) 
   1. Measure the voltage between the terminals of the B3 ECM connector.
      Fig 1: Identifying B3 ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS
      
      

      Tester Connections	Conditions	Specified Conditions
      FPR (B3-30) - E1 (B3-1)	STA signal ON	11 to 14 V
      	STA signal OFF	0 to 3V

   NG: REPLACE ECM  (See REMOVAL  )

   OK: Go TO NEXT STEP 

2. INSPECT FUEL PUMP RELAY ASSEMBLY 
   1. Remove the fuel pump relay from the engine room R/B.
   2. Check the fuel pump relay resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATIONS
      
      

      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.
      Fig 2: Identifying Fuel Pump Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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 R/B.
   2. Disconnect the 63 ECM Connector.
   3. Check the resistance.

      Standard Resistance (Check for open) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS
      
      

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

      Standard Resistance (Check for short) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS
      
      

      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.
      Fig 3: Identifying Fuel Pump Relay & ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM  (See REMOVAL  )