Speed Signal Absent
- This DTC will set if instrument cluster does not register a speed signal (input signal) when engine speed signal exceeds 1500 RPM for at least one minute and engine temperature exceeds 122°F (50°C).
- Speedometer may read too low or give no output. DTC is set in engine control system. On vehicles equipped with Electronic Climate Control (ECC), fan speed does not reduce with increased road speed. On vehicles equipped with trip computer, faults occur in displays for average speed, average consumption, instantaneous consumption and trip computer trip recorder. Cruise control will shut down and a DTC will set. If ABS light comes on, see ANTI-LOCK BRAKE SYSTEM & TRACTION CONTROL article.
- To correct this problem, check for broken signal lead, high contact resistance, idle above 1500 RPM, or ABS system. See the ANTI-LOCK BRAKE SYSTEM & TRACTION CONTROL article.