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Camry Gasoline Models, Camry Solara, Celica, Corolla, ECHO & RAV4

  1. If using scan tool, go to next step. If scan tool is not available, go to step  3.
  2. Check operation of fuel pump by using scan tool. See FUEL PUMP OPERATION under FUEL SYSTEMS in BASIC DIAGNOSTIC PROCEDURES - 4-CYLINDER article. If fuel pump does not operate when using scan tool, go to step  5. If fuel pump operates when using scan tool, diagnose by symptom. See TROUBLE SHOOTING - NO CODES article.
  3. Remove necessary components for access to Engine Control Module (ECM). See ECM LOCATION  table.
  4. Note ECM terminals. See Figure-Figure . Turn ignition on. Momentarily connect jumper wire between body ground and FC terminal at ECM and listen for fuel pump operating sound. See ECM IDENTIFICATION FOR FUEL PUMP FC TERMINAL (EXCEPT TACOMA & 4RUNNER)  table. On Camry gasoline models, Camry Solara and RAV4, feel for fuel pressure in fuel inlet line at fuel filter when fuel inlet line is pinched closed. On Celica, Corolla and ECHO, feel for fuel pressure in fuel inlet line at end of fuel rail when fuel inlet line is pinched closed. On all models, if fuel pump does not operate when jumper wire was connected, go to next step. If fuel pump operates when jumper wire was connected, diagnose by symptom. See TROUBLE SHOOTING - NO CODES article.
  5. Check ECM power source circuit. See ENGINE CONTROL MODULE (ECM) POWER SOURCE CIRCUIT . If ECM power source circuit is okay, go to next step. If ECM power source circuit is defective, repair as necessary.
  6. Check circuit opening relay. See CIRCUIT OPENING RELAY  under RELAYS. If circuit opening relay is okay, go to next step. If circuit opening relay is defective, replace circuit opening relay.
  7. Remove necessary components for access to ECM if not previously done. See ECM LOCATION  table.
    ECM LOCATION

    Model (1) Location
    Camry Gasoline Models & Camry Solara Behind Glove Box
    Celica In Engine Compartment, Below Cover, Just In Front Of Battery, Next To Driver-Side Strut Tower
    Corolla (2) Behind Stereo On Instrument Panel, Just In Front Of Center Console
    ECHO Behind Glove Box
    RAV4 Behind Instrument Panel, Near Front Of Center Console
    (1) For illustration of ECM location, see THEORY & OPERATION article.
    (2) It may be necessary to remove bolts from ECM so electrical connectors can be accessed on ECM. See ENGINE CONTROL MODULE (ECM) under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article.
  8. Note ECM terminals. See Figure-Figure . Turn ignition on. Using voltmeter, check voltage between body ground and FC terminal at ECM. See ECM IDENTIFICATION FOR FUEL PUMP FC TERMINAL (EXCEPT TACOMA & 4RUNNER)  table.
    ECM IDENTIFICATION FOR FUEL PUMP FC TERMINAL (EXCEPT TACOMA & 4RUNNER)

    Application ECM Connector ECM Terminal No. (Wire Color)
    Camry Gasoline Models & Camry Solara E7 3 (Green/Red)
    Celica E2 3 (Green/Red)
    Corolla
    3-Speed A/T & M/T E6 14 (Green/Red)
    4-Speed A/T E10 3 (Green/Red)
    ECHO E4 14 (Green)
    RAV4 E6 14 (Green/Red)
  9. Voltage should be 9-14 volts. If voltage is within specification, go to next step. If voltage is not within specification, check for open in wiring harness and connectors between ECM and circuit opening relay, ignition switch and circuit opening relay (if applicable) and EFI main relay and circuit opening relay (if applicable). See WIRING DIAGRAMS article. For EFI main relay location, see EFI MAIN RELAY  under RELAYS. If wiring harness or electrical connector is defective, repair as necessary.
  10. Check fuel pump resistance and operation. See FUEL DELIVERY  under FUEL SYSTEMS. If fuel pump resistance is within specification and fuel pump operates, go to next step. If fuel pump resistance is not within specification or fuel pump does not operate, replace fuel pump.
  11. Check for open in wiring harness and electrical connectors between circuit opening relay and fuel pump, and between fuel pump and body ground. See WIRING DIAGRAMS article. If wiring harness and electrical connectors are okay, go to next step. If wiring harness or electrical connector is defective, repair as necessary.
  12. Check ECM ground circuit. See WIRING DIAGRAMS article. If ECM ground circuit is defective, repair ground circuit as necessary. If ECM ground circuit is okay, replace ECM.
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