


Special Service Tools
Symptom diagnosisPreparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Commercial Service Tool
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General Precautions
Always use a 12 volt battery as power source.
Do not attempt to disconnect battery cables while engine is
running.
Before connecting or disconnecting the ECM harness connector,
turn ignition switch OFF and disconnect negative battery
cable. Failure to do so may damage the ECM because
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P0506 ISC System
Description
The ECM controls the engine idle speed to a specified level through the fine
adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator.
The operating of the throttle valve is
varied to allow for optimum control of the engine ...