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Home >> Isuzu >> 1995 >> Pickup 2WD L4-2.3L (4ZD1) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Throttle Full Open Switch >> Testing and Inspection >> Fuel Cut-Off System
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Fuel Cut-Off System











FUEL CUT-OFF SYSTEM

Preparation:
1. Start and warm up the engine thoroughly.
2. Turn the ignition switch to the "LOCK" position.
3. Disconnect wide open throttle switch harnesses at connector, insert a fused jumper wire into the idle terminal (upper), then make connections at the connector with the wire pulled part way out.

Inspection:
1. Keep engine running at 2,000 - 2,500 rpm.
2. Check to make certain engine speed lowers to approximately 1,250 rpm when battery voltage is applied to the wire extending from the idle terminal.

NOTE: Engine hunting may occur at the speed of 1,250 rpm or so, but it does not indicate an abnormal condition.

Fuel cut-off and reinjection are controlled by the throttle switch.