Pinpoint Test G : Lost Communication With Another Module: Notes
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Refer to FOUR WHEEL DRIVE SYSTEMS for schematic and connector information.
Normal Operation and Fault Conditions
The TCCM expects to receive network data from other modules on HS-CAN2. The TCCM will set a DTC when it has not received messages from a module for more than 5 seconds. Other modules that require data from the suspect module may also set a lost communication DTC.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ATCM U0140:00 |
Lost Communication With Body Control Module: No Sub Type Information | Sets in continuous memory in the ATCM if data messages received from the BCM through the GWM are missing for 5 seconds or longer. |
| TCCM U0100:00 |
Lost Communication With ECM/PCM "A": No Sub Type Information | Sets in continuous memory in the TCCM if powertrain data messages received from the PCM over the HS-CAN are missing for longer than 5 seconds with ignition in RUN and battery voltage in range. |
| TCCM U0101:00 |
Lost Communication with TCM: No Sub Type Information | Sets in continuous memory in the TCCM if powertrain data messages received from the TCM over the HS-CAN are missing for longer than 5 seconds with ignition in RUN and battery voltage in range. |
| TCCM U0121:00 |
Lost Communication With Anti-Lock Brake System (ABS) Control Module "A": No Sub Type Information | Sets in continuous memory in the TCCM if ABS module data messages received from the ABS module over the HS-CAN are missing for longer than 5 seconds. |
| TCCM U0138:00 |
Lost Communication with All Terrain Control Module: No Sub Type Information | Sets in continuous memory in the TCCM if data messages received from the Terrain Management module through the GWM are missing for 5 seconds or longer. |
| TCCM U0140:00 |
Lost Communication With Body Control Module: No Sub Type Information | Sets in continuous memory in the TCCM if data messages received from the BCM through the GWM are missing for 5 seconds or longer. |
Possible Sources
- Suspect module
- Battery voltage concern
- HS-CAN2