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Home >> Mitsubishi >> 1993 >> Pickup 2WD L4-2350cc 2.4L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> A/C Switch and Compressor Clutch Relay >> System Description >> Federal
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Federal





DESCRIPTION
The air conditioning switch applies battery voltage to the engine control module when the air conditioning is switched ON.
When the air conditioning signals are input, the engine control module activates the idle-speed control motor, and also switches ON the power transistor. As a result, current flows to the power relay coil and the relay switch is switched ON; the air conditioning compressor's magnetic clutch is activated.

TROUBLESHOOTING HINTS
1. If the air conditioning compressor's magnetic clutch is not activated when the air conditioning switch is switched ON during idling, it is probable that the cause is a malfunction of the air conditioning control system.
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