There may be several communication DTCs set along with several Driver Information Center messages —Service Power Steering, Service StabiliTrak, Service Rear Drive, Service Restraint System — displayed on some 2020-2024 CT5 and CT5-V models.
Check if one or more of the following DTCs are set: U0075 (Control Module Communication CAN Bus 1 Off), U0131 (Lost Communication with Power Steering Module), U0151 (Lost Communication with Restraints Control Module), U0420 (Invalid Data Received from Power Steering Module), U0452 (Invalid Data Received from Restraints Control Module), B197D (No Environment Identifier Received from Restraints Control Module).
If these DTCs are set, inspect the passenger seat frame for a short of CAN 1 circuits 4986 or 4987. The wiring harness may be chaffing on the seat frame. (Fig. 8)
Fig. 8
If there is damage to the wiring harness, (Fig. 9) repair the harness following the wiring repair procedures in the appropriate Service Information.
Fig. 9
After repairs are completed, reroute the wiring harness to prevent any contact with the seat frame. (Fig. 10)
Fig. 10
Refer to #PIC6597 for more details.
– Thanks to David Antal
