Inspection Procedure

PERFORM ACTIVE TEST (OPERATE F/PMP RELAY)
1. Connect the hand-held tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
3. Enter the following menus: DIAGNOSIS/ ENHANCED OBD II/ ACTIVE TEST / FUEL PUMP / SPD.
4. Check the relay operation while operating it with the hand-held tester.
  OK: Operating noise can be heard from the relay.
1. OK: Go to step 5
2. NG: Go to next step.
INSPECT F/PMP RELAY
1. Remove the F/PMP relay from the engine room Relay Block (R/B).
2. Measure the resistance.
  
  Fig 1: Identifying Connector Terminals F/PMP Relay
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Resistance Specification Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE F/PMP RELAY
2. OK: Go to next step.
INSPECT ECM (FC VOLTAGE)
1. Turn the ignition switch ON.
2. Measure the voltage between the of the ECM connector.
  
  Fig 3: Measuring Voltage Between Of ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 4: Terminal Voltage Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE ECM (SEE REPLACEMENT )
2. NG: Go to next step.
CHECK WIRE HARNESS (ECM - C/OPN RELAY, C/OPN RELAY - IGNITION)
1. Check the wire harness between the ECM and the C/OPN relay.
  1. Disconnect the E3 ECM connector.
    
    Fig 5: Disconnecting E3 ECM Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Remove the C/OPN relay from the engine room R/B.
    
    Fig 6: Removing C/Opn Relay
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Measure the resistance of the wire harness side connectors.
    Standard:
    
    Fig 7: Resistance Condition Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the IG2 fuse.
  1. Remove the IG2 fuse from the engine room R/B.
    
    Fig 8: Identifying Connector Terminals Ignition Fuse
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Check the resistance of the IG2 fuse.
3. Check the wire harness between the C/OPN relay and the ignition switch.
  Standard: Below 1 Ω
  1. Remove the C/OPN relay from the engine room R/B.
  2. Disconnect the 117 ignition switch connector.
  3. Measure the resistance of the wire harness side connectors.
    Standard:
    
    Fig 9: Resistance Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
2. OK: Go to next step.
  REPLACE ECM (SEE REPLACEMENT )
INSPECT FUEL PUMP
1. Check the fuel pump resistance.
  Measure the resistance between terminals 4 and 5.
  
  Standard: 0.2 to 3.0 Ω at 20°C (68°F)
2. Check the fuel pump operation
  Apply battery voltage to both the terminals. Check that the pump operates.
  NOTE:
  - These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
  - Keep fuel pump as far away from the battery as possible.
  CAUTION: Always turn on and off the voltage on the battery side, not the fuel pump side.
  
  Fig 10: Identifying Connector Terminals Fuel Pump
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE FUEL PUMP (See REPLACEMENT )
2. OK: Go to next step.
CHECK WIRE HARNESS (C/OPN RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND)
1. Check the wire harness between the C/OPN relay and the fuel pump.
  1. Remove the C/OPN relay from the engine room R/B.
    
    Fig 11: Removing C/OPN Relay
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Disconnect the F19 fuel pump connector.
    
    Fig 12: Identifying F19 Fuel Pump Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Measure the resistance of the wire harness side connectors.
    Standard:
    
    Fig 13: Resistance Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Measure the resistance of the wire harness side connector.
    Standard:
    
    Fig 14: Resistance Condition Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE ECM (SEE REPLACEMENT )
2. OK: Go to next step.
  REPAIR OR REPLACE HARNESS AND CONNECTOR