1992 Toyota 4Runner 2D Utility, AutomaticFACTORY OEM SERVICE PROCEDURE

Cold Start Injector

  1. Disconnect negative battery cable. Disconnect cold start injector wiring harness connector.
  2. Using ohmmeter, measure resistance between electrical terminals of cold start injector. Replace cold start injector if resistance isnot 2-4 ohms.
  3. Remove cold start injector. Install Union Adapters (09268-41080) on cold start injector and delivery pipe. Connect delivery hose to union adapters. See Figure.
  4. Reconnect negative battery cable. Connect jumper wire between terminals FP and +B of engine check connector. Turn ignition on, with engine off to pressurize fuel system.
    NOTE: For proper location of engine check connector and terminal identification, see TESTS W/CODES article in the ENGINE PERFORMANCE Section. Jumper wire is installed in engine check connector when checking fuel operation and fuel pressure.
  5. Connect cold start injector tester to cold start injector. Use Cold Start Injector Tester (09842-30050). Place cold start injector in a container.
    CAUTION: Perform cold start injector test in shortest possible time to check fuel spray pattern.
  6. Connect cold start injector tester to battery. Ensure fuel spray pattern is an even cone shape. Disconnect cold start injector tester from battery.
  7. Note fuel leakage from cold start injector. Maximum leakage should be one drop per minute with fuel pressure applied. Replace cold start injector if defective. Disconnect negative battery cable and test equipment.
NOTE: Cold start injector is controlled by cold start injector time switch when ignition is turned on.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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