Question about Volvo Cars & Trucks
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Posted on Jan 02, 2017
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Apr 06, 2017 | Cars & Trucks
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Jul 08, 2015 | Nissan Cars & Trucks
Scan tool power ground at terminal 4.
Common signal ground at terminal 5.
Class 2 signal at terminal 2.
I wonder how many friends out there mess up other friends vehicles from stuff they see on the internet . When are you people going to learn , your messing with complex electronics !!!!! He shorted out the class 2 serial data communication network !
Do you know what this is ? if not you need to take to your local GM Mr. goodwrench !
Class 2 Serial Data Link
The data link is configured as a ring with discrete lines entering and leaving each module. This allows communications to the modules on the ring if one of the two discrete circuits is open.
A total list of the control modules on the Class 2 Serial Data Line can include the following:
Dash Integration Module (DIM)
Driver Door Module (DDM)
Electronic Brake Control Module (EBCM)
Head Up Display (HUD) w/UV6
HVAC Control Module w/C67
Inflatable Restraint Sensing and Diagnostic Module (SDM)
Instrument Panel Cluster (IPC)
Instrument Panel Integration Module (IPM) w/CJ2
Memory Seat Module (MSM) w/A45
Powertrain Control Module (PCM)
Rear Integration Module (RIM)
Remote Control Door Lock Receiver (RCDLR)
Remote Playback Device - CD Changer w/U1S
Theft Deterrent Control Module
Vehicle Interface Unit (VIU) w/UE1
Power door serial data does not communicate with the scan tool via the DLC. Power door serial data information is interpreted by the driver door module (DDM) and transmitted on the Class 2 data link by the DDM.
Power door serial data is used for serial data communication between the four door modules as well as the driver door switch assembly (DDSA
Scan Tool Does Not Communicate with Class 2 Device
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. Connecting a scan tool to the DLC allows communication with the modules for diagnostic purposes.
The engine will not start when there is a total malfunction of the class 2 serial data circuit while the engine is not running.
The numbers below refer to the step numbers on the diagnostic table.
Apr 22, 2015 | 2001 Buick LeSabre
The powertrain control module (PCM)
The instrument panel cluster
The sensing diagnostic module (SDM)
The electronic brake control module (EBCM)
The serial data line class 2 (circuit 1807) allows the scan tool to access directly the PCM in order to read emissions-related information. The scan tool gains access to both data lines through the data link connector (DLC). You may then monitor or control system operations for diagnostic purposes.
Mar 08, 2015 | 1999 Pontiac Sunfire
Jan 29, 2014 | 2008 Ford Focus
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