CRUISE CONTROL SYSTEM FAIL-SAFE CHART

Tech Tips

If the following conditions are detected while the cruise control system is controlling vehicle speed, the system clears the vehicle speed stored in the hybrid vehicle control ECU assembly and cancels control of vehicle speed by the cruise control system.

Vehicle Condition Auto Cancel Condition Re-operation Condition

  • Cruise control indicator turns off

  • A warning message "Check Cruise Control System" is displayed

  • "Pong" warning sound is heard

  • Open or short in stop light switch circuit

  • Problem with vehicle speed signal

 Cruise control system is turned off and back on again using the cruise control switch (ON/OFF button).

  • Problem with stop light switch input circuit

  • Problem with cruise control switch cancel circuit

  • Malfunction in the electronically controlled brake system

  • Communication stop between skid control ECU assembly and hybrid vehicle control ECU assembly

 Power switch is turned off and back to ON again.
Cruise control indicator remains illuminated (Control of vehicle speed by cruise control system is canceled)

  • Vehicle speed is lower than low speed limit (approx. 40 km/h (25 mph)) while driving with cruise control system controlling vehicle speed

  • Electronically controlled brake system system operates while driving with cruise control system controlling vehicle speed

  • TRC system operates for a certain period of time while driving with cruise control system controlling vehicle speed.

  • TRC is turned off

  • VSC is turned off

 Cruise control switch is pushed to +/RES
Vehicle speed is lower than stored vehicle speed by approximately 16 km/h (10 mph) or more Cruise control switch is pushed to -/SET
Cruise control indicator turns off Malfunction in the hybrid control system Cruise control system is turned off and back on again using the cruise control switch (ON/OFF button).