Group 36 Vehicle Control Unit, Fault Tracing MID 144 Vehicle ECU, Fault Codes PID “MID 144 PID 46 Primary Tank Pressure”, page 7 “MID 144 PID 83 Road Speed Limit Status”, page 7 “MID 144 PID 84 Vehicle Speed”, page 7 “MID 144 PID 86 Cruise Control, Set Speed”, page 8 “MID 144 PID 91 Accelerator Pedal Position (Percentage)”, page 8 “MID 144 PID 152 Vehicle ECU, Number of Resets”, page 8 “MID 144 PID 191 Output Shaft Speed”, page 9 PPID “MID 144 PPID 3 Starter relay Output”, page 9 “MID 144 PPID 60 Idle Switch, Power”, page 9 “MID 144 PPID 61 Engine Brake Switch”, page 9 “MID 144 PPID 69 Buffered Idle Validation Switch”, page 10 “MID 144 PPID 70 Pedal Switches, Supply”, page 10 “MID 144 PPID 71 Cruise Control and Engine Brake, Switch Supply”, page 10 “MID 144 PPID 72 Accelerator Pedal and Engine Brake, Sensors Supply”, page 11 “MID 144 PPID 73 Second Accelerator Pedal, Supply Sensors”, page 11 “MID 144 PPID 74 Vehicle ECU, Power Supply”, page 12 “MID 144 PPID 265 Vehicle Speed Sensor Supply”, page 12 “MID 144 PPID 279 Air dryer, Dry Agent Reservoir”, page 12 “MID 144 PPID 312 Air Dryer, Regeneration”, page 12 “MID 144 PPID 430 Air Dryer, Regeneration”, page 13 SID “MID 144 SID 230 Idle Validation Switch page 13 “MID 144 SID 231 SAE J1939 Data Link”, page 13 “MID 144 SID 240 Program Memory”, page 13 “MID 144 SID 243 Cruise Control Set Switch”, page 13 “MID 144 SID 250 SAE J1587 Data Link”, page 14 “MID 144 SID 253 Calibration Memory EEPROM”, page 14 5