Jaguar XJ - Manual (Page 148)

ii
XJ Series 1998
DATE OF ISSUE: SEPTEMBER 1997
Appendix
CAN Messages by Node
Node: Engine Control Module
Transmitted by ECM
Message Usage
CAN traction acknowledge Confirms torque reduction for traction control
CAN traction control estimated engine torque Derived from map of engine characteristics
CAN shift energy management estimated engine torque Derived from map of engine characteristics
CAN throttle position Throttle valve position
CAN pedal position Accelerator pedal position, throttle demand
CAN torque reduction acknowledge Confirms torque reduction for shift energy management
CAN engine speed Engine speed
CAN brake pedal pressed Brake switch status
CAN cruise status Cruise control system status
CAN park brake status Indicates whether the parking brake is on
CAN OBDII clear fault codes Request for ABS and TCM to clear their OBDII DTCs
CAN engine coolant temperature Engine coolant temperature in Celsius
CAN engine OBDII MIL MIL control for OBDII DTCs
CAN throttle malfunction red Red throttle malfunction warnings
CAN throttle malfunction amber Amber throttle malfunction warnings
CAN ECM fault code MIL status Indicates whether the ECM DTC should switch MIL on
CAN ECM PECUS flag PECUS programmed status of ECM
CAN engine fault codes ECM DTCs, including OBDII P and C codes
CAN fuel used Derived from injector pulse duration
CAN NWM token – ECM Message for monitoring network status
CAN diagnostic data out – ECM To external diagnostics device only