Test I: The Heating Ventilation Air Conditioning (HVAC) Module - Electronic Manual Temperature Control Module (EMTC) Does Not R

PINPOINT TEST I: THE HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE - ELECTRONIC MANUAL TEMPERATURE CONTROL MODULE (EMTC) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The heating ventilation air conditioning (HVAC) module - electronic manual temperature control (EMTC) communicates with the scan tool through the medium speed controller area network (MS-CAN). Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the HVAC module - EMTC. The HVAC module - EMTC shares the MS-CAN with the instrument cluster (IC), the smart junction box (SJB), the audio control module (ACM), the audio digital signal processing (DSP) module (if equipped), the satellite digital audio receiver system (SDARS) module (if equipped), the audio rear control unit (RCU), the rear entertainment module (RETM), the driver seat module (DSM) (if equipped), the power running board (PRB) module, the parking aid module (PAM) (if equipped), the liftgate/trunk module (LTM) and the dual climate control seat module (DCSM) (if equipped). Voltage for the HVAC module - EMTC is provided by circuits CBP37 (WH) and SBP15 (WH/RD). Circuit GD133 (BK) provides ground.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- HVAC module - EMTC

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