The cruise control system keeps the vehicle running at a fixed speed until a signal canceling this fixed speed is received. When the ECM receives a signal from the CC control switch, the ECM controls the ETS motor to hold the vehicle at the current speed. The same circuit between the switches and the ECM is used for all switch functions. As a switch is pressed, the voltage changes on the signal wire. While the system is operating, the "CRUISE" indicator lamp in the instrument cluster lights up.
If the swich signal’s voltage is not within the calibrated ranges when ECM checks the switch signal under detecting condition, ECM 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 ECM |
Enable Conditions |
•
Engine is running
•
Ignition voltage ≥ 9V
•
Cruise control system type is learned | |
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% |
