Inspection Procedure

HINT:

Read freeze frame data using the Techstream The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1. CHECK FUEL PUMP OPERATION 
   1. Check if there is pressure in the fuel inlet hose.

      HINT:

      If there is fuel pressure, you will hear the sound of fuel flowing

   NG: GO TO FUEL PUMP CONTROL CIRCUIT

   OK: Go to Next Step 

2. CHECK ECM (FRP VOLTAGE) 
   1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      A5-6 (FPR) - E6-1 (E1)	STA signal ON	11 to 14 V
      A5-6 (FPR) - E6-1 (E1)	STA signal OFF	0 to 3V

   Fig 1: Identifying ECM Connectors E6 And A5
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Go to step 3 

   OK: REPLACE ECM  (See REMOVAL )

3. INSPECT F/PMP RELAY 
   1. Remove the F/PMP relay from the engine room No 2 relay block
   2. Measure the resistance according to the value(s) in the table below

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      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

      Fig 2: Identifying F/Pmp Relay From Engine Room No 2 Relay Block

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reinstall the F/PMP relay

   NG: REPLACE F/PMP RELAY 

   OK: Go to Next Step 

4. CHECK HARNESS AND CONNECTOR (F/PMP RELAY - ECM) 
   1. Remove the F/PMP relay from the engine room No 2 relay block
   2. Disconnect the ECM connector
   3. Measure the resistance according to the value(s) in the table below

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      F/PMP relay (2) - A5-6 (FPR)	Always	Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      F/PMP relay (2) or A5-6 (FPR) - Body Ground	Always	10 kΩ or higher

   4. Reinstall the F/PMP relay.
   5. Reconnect the ECM connector
   Fig 3: Identifying F/Pmp Relay Terminal And ECM Connector Terminal A5
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (F/PMP RELAY - ECM) 

   OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (F/PMP RELAY - C/OPN RELAY)