Propeller shaft speed sensor short circuit to battery.
• Check wiring and connectors between propeller shaft speed sensor and COO • Check propeller shaft speed sensor • Measure the sensor voltage between signal and ground
What you'll see
This fault is only detected on trucks without a tachograph. • No vehicle speed is displayed in instrument cluster • Vehicle distance is not incremented • Shifting to range low gear is inhibited (*) • Cruise Control is inhibited • Generally, all functions dependent on vehicle speed information, is degraded (*) During the first 10 seconds after ignition on, it is always possible to shift to range low gear.
System reaction
No system-reaction text recorded.
Diagnostic depth
Impermissible signal from propeller shaft speed sensor. The sensor voltage level is too high. The propeller shaft speed sensor is short circuit to supply voltage.
• Defect wiring: - short circuit between sensor signal (pin C1) and supply voltage. • Defect connectors • Defect sensor unit (on vehicles without tachograph)