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 ECM. When a signal from the control switch is input to the ECM while the vehicle is in state, the cruise control actuator is activated to operate the system.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
ECM sets DTC P0564 if the ECM detects signal from switch exceeds threshold value.
Item
Detecting Condition
Possible Cause
DTC Strategy
Case1
? Invalid voltage range check
? Open or short in harness
? Poor connection or damaged harness
? Faulty cruise remote control switch
Case2
? Check SET/COAST switch stuck
Case3
? Check RES/ACC switch stuck
Enable Conditions
? 10V< Battery voltage <16V
Case2&3
? Cruise control not active
Threshold Value
? 0.05 V< Switch voltage(SW) <0.72 V or 0.85V< SW <2 V or 2.2 V< SW <4.4 V or 4.8 V< SW
? 0.72 V< Switch voltage <0.85V
? 2.0V< Switch voltage <2.2V
Diagnostic Time
? 31sec.
? 61sec.