Hand-held tester:

PERFORM ACTIVE TEST BY HAND-HELD TESTER (OPERATE CIRCUIT OPENING RELAY)
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to ON and turn the hand-held tester ON.
3. Select the item: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD.
4. Check the relay operation while operating it with the hand-held tester.
  Standard: Operating sound can be heard from the relay.
OK: Go to step 5

NG: GO TO NEXT STEP.
INSPECT CIRCUIT OPENING RELAY
1. Remove the circuit opening relay from the engine room J/B.
2. Check for continuity in the circuit opening relay.
  Standard:
  
  Fig 1: Circuit Opening Relay Terminals Continuity Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Checking Continuity Between Circuit Opening Relay Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Reinstall the circuit opening relay.
NG: REPLACE CIRCUIT OPENING RELAY

OK: GO TO NEXT STEP.
INSPECT ECM (FC VOLTAGE)
1. Turn the ignition switch to ON.
2. Measure the voltage between the specified terminals of the E6 and E8 ECM connectors.
  Standard:
  
  Fig 3: ECM Connector Terminals Specified Condition Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Identifying ECM Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: REPLACE ECM (See ECM (3MZ-FE) )

NG: GO TO NEXT STEP.
CHECK HARNESS AND CONNECTOR (ECM - CIRCUIT OPENING RELAY, CIRCUIT OPENING RELAY - IGNITION SWITCH)
1. Check the harness and the connector between the ECM connector and the circuit opening relay.
  1. Disconnect the E6 ECM connector.
  2. Remove the circuit opening relay from the engine room J/B.
  3. Check the resistance between the wire harness side connectors.
    Standard (Check for open):
    
    Fig 5: ECM Connector And Circuit Opening Relay Connector Terminals Specified Condition Chart (Check For Open)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard (Check for short):
    
    Fig 6: ECM Connector And Circuit Opening Relay Connector Terminals Specified Condition Chart (Check For Short)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Reconnect the ECM connector.
  5. Reinstall the circuit opening relay.
    
    Fig 7: Disconnecting E6 ECM Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Fig 8: Identifying Circuit Opening Relay Terminals And IGN Fuse
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the harness and the connector between the circuit opening relay and the 114 ignition switch connector.
  1. Inspect the IG2 fuse.
    - Remove the IG2 fuse from the engine room J/B.
    - Check for continuity in the IG2 fuse.
      Standard: Continuity
    - Reinstall the IG2 fuse.
  2. Remove the circuit opening relay from the engine room J/B.
  3. Disconnect the 114 ignition switch connector.
  4. Check the resistance between the wire harness side connectors.
    Standard (Check for open):
    
    Fig 9: Circuit Opening Relay And Ignition Switch Connector Terminals Specified Condition Chart (Check For Open)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard (Check for short):
    
    Fig 10: Circuit Opening Relay And Ignition Switch Connector Terminals Specified Condition Chart (Check For Short)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Reinstall the circuit opening relay.
  6. Reconnect the ignition switch connector.
    
    Fig 11: Identifying Ignition Switch Connector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM (See ECM (3MZ-FE) )
INSPECT FUEL PUMP
1. Inspect the fuel pump resistance.
  1. Measure the resistance between terminals 4 and 5.
    Standard: 0.2 to 3.0 Ω at 20°C (68°F)
2. Inspect the fuel pump operation
  1. 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.
- Always do the switching at the battery side.
Fig 12: Identifying Fuel Pump Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FUEL PUMP (See FUEL SUCTION W/PUMP & GAUGE TUBE ASSY (3MZ-F) )

OK: GO TO NEXT STEP.
CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP - BODY GROUND)
1. Check the harness and the connector between the circuit opening relay and the fuel pump connector.
  1. Remove the circuit opening relay from the eng room J/B.
  2. Disconnect the F15 fuel pump connector.
  3. Check the resistance between the wire harness side connectors.
    Standard (Check for open):
    
    Fig 13: Circuit Opening Relay And Fuel Pump Connector Terminals Specified Condition Chart (Check For Open)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard (Check for short):
    
    Fig 14: Circuit Opening Relay And Fuel Pump Connector Terminals Specified Condition Chart (Check For Short)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Fig 15: Identifying Circuit Opening Relay Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Fig 16: Identifying Fuel Pump Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Reinstall the circuit opening relay.
  5. Reconnect the fuel pump connector.
2. Check the harness and the connector between the fuel pump connector and the body ground.
  1. Disconnect the F15 fuel pump connector.
  2. Check the resistance between the wire harness side connectors and the body ground.
    Standard (Check for open):
    
    Fig 17: Fuel Pump Connector And Body Ground Terminals Specified Condition Chart (Check For Open)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Reconnect the fuel pump connector.
OK: REPAIR OR REPLACE HARNESS OR CONNECTOR

NG: REPLACE ECM (See ECM (3MZ-FE) )