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.
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HOMESERVICE MANUALSISUZU1996TROOPER S, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 40 (ENGINE CONTROLS - BASIC TESTING - 2.6L 4-CYL)IGNITION CHECKSNON-HEI SYSTEMSPOWER TRANSISTOR
1996 Isuzu Trooper S, Automatic
Power Transistor
1996 Isuzu Trooper S, AutomaticSECTION Power Transistor
WARNING: This page is about a different car, the 1996 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure ignition is off. Remove coil wire from distributor cap. Attach Spark Tester (J-26792), or, using insulated pliers, hold distributor terminal end of coil wire about 1/4" (5 mm) from metal surface.
- Disconnect and remove power transistor from under intake manifold. This involves removing right front wheel and rubber inner fender panel cover to access power transistor.
- Connect jumper wire between harness connector and power transistor connector Blue wire terminal. Connect negative end of 1.5-volt "D" battery to power transistor Green wire terminal. See Fig 1 . Connect positive end of 1.5-volt "D" battery to harness connect or Yellow wire terminal. Ground power transistor.
- Turn ignition on with engine off. Disconnect and connect jumper lead at power transistor connector several times. Verify spark is jumping across air gap at spark tester. If spark does not occur, check wiring for continuity or shorts. If wiring is okay, replace power transistor.
NOTE:
A faulty power transistor or circuit will set DTC(s). See appropriate TESTS W/CODES - 2.6L 4-CYL
article. Wire colors may vary. See appropriate wiring diagram in WIRING DIAGRAMS
section.
RENDER: 1.0x
NO RELATED
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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.