Test J: The Electronic Automatic Temperature Control (EATC) Module Or Electronic Manual Temperature Control (EMTC) Module Does
PINPOINT TEST J: THE ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE OR ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) MODULE DOES NOT RESPOND TO THE SCAN TOOLNormal Operation
The electronic automatic temperature control (EATC) or 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 EATC/EMTC module. The EATC/EMTC module shares the MS-CAN network with the smart junction box (SJB), driver seat module (DSM) (if equipped), audio control module (ACM), DVD player (if equipped), satellite digital audio receiver system (SDARS) module (if equipped) and the instrument cluster. Voltage to the EATC/EMTC module is provided by circuits SBP15 (WH/RD) and CBP37 (WH). Ground is provided by circuit GD133 (BK).
The EATC/EMTC module communicates with the scan tool on the MS-CAN network.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- EATC/EMTC module
J1:
J1-J2:
J3-J4:
