Instruments Actuated By The Can Data Bus
Courtesy of DAIMLERCHRYSLER CORP.
- Odometer
(1), the input is transmitted by the Controller Antilock Brake (CAB) and is determined using input from the four wheel speed sensors.
- Speedometer
, the input is transmitted by the Controller Antilock Brake (CAB) and is determined using input from the four wheel speed sensors. The individual wheel speeds are compared and checked for logic. If significant differences in individual speed signals are recognized, the speed is determined from the speed of one of the front wheels. If the speed signals differ significantly, it may be due to wheel spin, cornering, or a defective speed sensor. If the computer identifies by means of sensor comparisons (comparison of each side) that the vehicle is cornering, the speed is determined from the value of the front wheel speeds. If the comparisons indicate one or more different wheel speeds, the vehicle speed is determined from the highest wheel speed. This also applies if a fault indication is received instead of a wheel speed signal. In this case, an error bit is also set. If any fault indications are received for all wheel speeds, the speed displayed is "0".
- Tachometer
, the engine speed signal is transmitted by the PCM and determined from the crankshaft position sensor signal.
Courtesy of DAIMLERCHRYSLER CORP.