Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC)

Information, Removal and Installation).

G7 VERIFY THE GRILLE SHUTTER OPERATION USING THE PCM (POWERTRAIN CONTROL MODULE) GRILL SHUTTER A POSITION - COMMANDED (GRILL_A_CMD) PID (PARAMETER IDENTIFICATION)

Start the engine and allow it to idle for at least 30 seconds to allow for the grille shutter calibration to complete. Using a diagnostic scan tool, view PCM PID. Using a diagnostic scan tool, select the PCM PID GRILL_A_CMD and command the grille shutter from 100% (open) to 0% (closed) while observing the grille shutter operation from the front of the vehicle.

Does the grille shutter fully open and close when commanded by the scan tool?

G8 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) A/C (AIR CONDITIONING) SWITCH (CC_SW_AC) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIR CONDITIONING) ON

Using a diagnostic scan tool, view FCIM Parameter Identifications (PIDs). Monitor the CC_SW_AC PID.

Does the PID display Active?

G9 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL (AC_REQ) PID (PARAMETER IDENTIFICATION) WITH THE A/C (AIR CONDITIONING) ON

Start the engine. Using a diagnostic scan tool, monitor the PCM AC_REQ PID. On the HVAC controls, select PANEL and then press the A/C button (indicator on).

Does the PID display Yes when the button is pressed?

G10 RESET THE AMBIENT AIR TEMPERATURE (AAT) SENSOR

On the HVAC controls, press the A/C (air conditioning) and Recirc buttons simultaneously, then release both. Within 2 seconds press A/C button again. Start the engine. On the HVAC controls, set the temperature to full cold, select PANEL and select the A/C button (indicator on).

Does the A/C compressor turn on?

Yes RETEST the A/C system for normal operation.