DTC C1291/48 VGRS ECU Communication Error: Description

The circuit is used to send TRAC & VSC control information from the skid control ECU to the VGRS ECU (VSC+, VSC-), and VGRS control information from the VGRS ECU to the skid control ECU (AFS+, AFS-).

DTC CHART

DTC No.	DTC Detection Condition	Trouble Area
C1291/48	Either of the following 1. or 2. continues for 5 sec.: ECU IG1 terminal voltage is 9.5 V to 17.0 V and data transmission to the VGRS ECU is impossible. ECU IG1 terminal voltage is 9.5 V to 17.0 V and receiving data from the VGRS ECU is impossible.	AFS+ or AFS- circuit VSC+ or VSC- circuit VGRS ECU Skid control ECU assembly