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.
1992 Isuzu Impulse RSFACTORY OEM SERVICE PROCEDURE
Chart C-4D-3, Ignition System Check (Impulse 1.6L Turbo): Notes
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- Checks to see if spark is present at one or more spark plug wires.
- Tests for continuity of cam angle sensor.
- Tests for continuity of cam angle sensor.
- Voltage will vary in this test depending on cranking speed. Voltage should vary between 500mv at slow cranking speed to 100mv at high cranking speed.
Factory Service Tools
Use the Manual With the Right Hardware
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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.