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Home >> Isuzu >> 1989 >> I-Mark L4-1471cc 1.5L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Throttle Position Switch >> Adjustments
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Throttle Position Switch: Adjustments

I-Mark
1. Check to see that TPS bracket attaching bolt is secured tightly.
2. Ensure there is no play in the TPS arm and primary throttle valve arm.
3. Connect a suitable ohmmeter to the green and black wires of the TPS.
4. Open throttle lever approximately 1/3 the way, then gradually close lever. Check for continuity when primary throttle valve reaches 18° (from horizontal plane) on automatic transmission models or 16° (from horizontal plane) on manual transmission models.