7 Multiplexed Electrical System Service Manual Parameter Part Numbers Parameter part numbers are searchable in ECAT and allow a dealer to determine what parameters were set at the factory. Also, if adding a new feature to a vehicle, the corresponding parameter needs to be programmed to the CECU and enabled. CECU Parameters Parameters are used to identify to the CECU what features are present on a vehicle. The parameters can be altered by a dealer to enable, disable, or assign certain functionality to that feature. 7 - 2 PM819023/KM815057 (08/14/2012) CECU Parameter Part Number Parameter Description Min. Value Max.
Value Explanation Q30-1024-000 ABS installed 0 1 Parameter controls DTC's related to ABS system. Value 0/Disabled means ABS is not installed and DTC's are disabled Value 1/Enabled means ABS is installed and DTC's are enabled. Q30-1024-001 After Treatment Regeneration Function 0 1 Parameter is used to allow information from the engine to turn on the telltales for the high exhaust temperature (emission system temperature) and regeneration filter. Value 0/Disabled means not allow cluster to display DPF and HEST telltales on cluster. Value 1/Enabled means allow cluster to display DPF and HEST telltales on cluster. Q30-1024-002 ATC installed 0 1 Currently has no effect on functionality.
Parameter will be used to determine the presence of traction control. Value 0/Disabled means ATC is not installed. Value 1/Enabled means ATC is installed. Q30-1024-003 Retarder Range Map 0 4 Parameter is used to define the engine brake levels. Value 1 means engine brake switches have two braking levels 0%, 100%. Value 2 means engine brake switches have three braking levels 0%, 50%, 100%. Value 3 means engine brake switches have four braking levels 0%, 33%, 66%, 100%. Value 4 means engine brake switches have three braking levels 0%, 33%, 66%. Q30-1024-004 Clutch Switch Present 1 1 Parameter is used to determine if the clutch switch is connected to the CECU.
Value 0/Disabled means clutch switch is not installed (it has an automatic transmission or is hardwired to engine). Value 1/Enabled means clutch switch is installed (it has a manual transmission and is wired to the control unit). Q30-1024-005 Cruise Control Set Switch Accel or Decel 0 1 Parameter is used to define the cruise control set/resume switch functionality. Value 0/Disabled means set switch is used for accelerate, and resume switch is used for decelerate. Value 1/Enabled means set switch is used for decelerate, and resume switch is used for accelerate.
Q30-1024-006 Cruise Control Present 0 1 Parameter is used to determine if cruise control is installed and controls the cruise control messages to the engine. Value 0/Disabled means cruise control switches are not installed. Value 1/Enabled means cruise control switches are installed.