The cruise control system keeps the vehicle running at a fixed speed until a signal canceling this fixed speed is received. When the main switch "AUTO CRUISE" is turned on with vehicle in the running mode, the battery voltage is applied to the PCM. When a signal from the control switch is input to the PCM while the vehicle is in state, the cruise control actuator is activated to operate the system the PCM controls the ETS motor to make a car go at a steady speed you want. Also, while the system is operating, "AUTO CRUISE" indicator lamp in the meter assembly lights up. In case of the cruise control system failure, the symptoms such as acceleration failure and vehicle speed setting failure will occur.
If the swich signal’s voltage is not within the calibrated ranges when PCM checks the switch signal under detecting condition, PCM sets P0564.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● Monitors the status of the invalid input when the input voltage is converted to the switch input signals. | ● Poor Connection ● Open or short in cruise switch circuit ● Faulty cruise switch ● Faulty PCM |
Enable Conditions | ● Engine is running ● Ignition voltage ≥ 9V ● Cruise control system type is leared | |
Threshold value | ● Invalid switch signal is monitored | |
Diagnosis Time | ● More than 7.8 seconds failure for 9.36 seconds test | |
MIL On Condition | ● NO MIL ON(DTC only) |
Item | Resistance(Ω) |
ON/OFF switch | 3.9 kΩ ± 5% |
SET switch | 220 Ω ± 5% |
RESUME switch | 910 Ω ± 5% |
CANCEL switch | 0 Ω ± 5% |
