Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE
Cold Start Injector Test
- Cold start injector and cold start injector time switch are both fed current from ignition switch during cranking. Cold start injector ground circuit is controlled by cold start injector time switch. To test cold start injector, unplug cold start injector wiring harness. Resistance between terminals of injector should be 2-4 ohms. Replace injector if defective.
- To check cold start injector spray pattern and leakage, relieve fuel system pressure. Remove cold start injector from vehicle.
- Install fuel hose to injector. If original hose is too short, use Fuel Injection Kit (09268-41045) to extend the hose length and add a union. See Fig 1 or Fig 2.
- Place container under cold start injector. Turn ignition on, with engine off. On all models connect jumper wires to engine check connector terminals "FP" and "+B" to pressurize fuel system. For engine check connector locations. Fuel pump check connector is 2-wire connector near airflow meter in left rear corner of engine compartment (White/Black and Green wires).CAUTION: Perform cold start injector connector test in shortest possible time.
- Connect probes of Fuel Injector Tester (09842-30070) to battery. Connect other end of tester to cold start injector. See Fig 1.
- Ensure fuel spray is an even cone shape. Disconnect fuel injector tester harness and observe cold start injector. See Fig 2. Maximum leakage should be one drop per minute with fuel pressure applied. Clean or replace cold start injector if defective.
Factory Service Tools
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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.