Air Conditioning (A/C) Request Circuit Check. Chevrolet Chevy Suburban

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1996 🢒 Chevy Suburban - 4WD 🢒 Engine 🢒 Engine Controls - 6.5L 🢒 Air Conditioning (A/C) Request Circuit Check

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HVAC System

Handling ESD Sensitive Parts Notice
Engine Controls Components
Information Sensors
Transmission Range Switch, TFT, Pressure Control Solenoid, and ISS
OBD II Symbol Description Notice
.

Circuit Description

Turning ON the air conditioning supplies ignition feed voltage to the A/C compressor clutch and to terminal PB4 of the PCM to increase fuel rate and maintain idle speed.

The PCM does not control the A/C compressor clutch. Therefore, if A/C does not function, refer to the A/C Section of the service manual for diagnosis of the system.