CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Cruise Control System
Symptom	Suspected Area	See page
Main switch cannot be turned ON (Cruise control indicator on combination meter does not illuminate)	Cruise control switch circuit	Click here
	Cruise main indicator light circuit	Click here
	Power management control ECU	Click here
SET not occurring or CANCEL occurring (DTC is not output)	Cruise control switch circuit	Click here
	Combination meter assembly	Click here
	Power management control ECU	Click here
Actual vehicle speed deviates above or below the set speed	Skid control ECU assembly	Click here
Actual vehicle speed deviates above or below the set speed	Power management control ECU	Click here
Gear shifting occurs frequently between 6th and O/D when driving with cruise control on	Skid control ECU assembly	Click here
	Power management control ECU	Click here
Cruise control not canceled, even when brake pedal is depressed	Stop light switch circuit	Click here
	Power management control ECU	Click here
Cruise control not canceled, even when transmission is shifted to N	Transmission control switch circuit	Click here
	Power management control ECU	Click here
Cruise control not canceled when transmission is changed from 4th gear to 3rd, 2nd or 1st gear with the shift paddle switch while shift lever in D or S	Shift paddle switch circuit	Click here
	Power management control ECU	Click here
Control switch does not operate (-/SET, +/RES, CANCEL not possible)	Cruise control switch circuit	Click here
	Power management control ECU	Click here
Speed setting cannot be canceled (CANCEL function fails)	Cruise control switch circuit	Click here
Speed setting cannot be canceled (CANCEL function fails)	Power management control ECU	Click here
SET possible at 40 km/h (25 mph) or less, or CANCEL does not operate	Skid control ECU assembly	Click here
	Power management control ECU	Click here
Poor response in ACCEL and RESUME modes	Cruise control switch circuit	Click here
Poor response in ACCEL and RESUME modes	Power management control ECU	Click here
O/D does not resume, even though road is not uphill	Skid control ECU assembly	Click here
O/D does not resume, even though road is not uphill	Power management control ECU	Click here
DTC memory is erased	Power management control ECU	Click here
DTC is not output, or is output when should not be	TC and CG terminal circuit	Click here
DTC is not output, or is output when should not be	Power management control ECU	Click here
Cruise main indicator light does not illuminate	Cruise control switch circuit	Click here
	Cruise main indicator light circuit	Click here
	Combination meter assembly	Click here
	Power management control ECU	Click here
Cruise set indicator light does not illuminate	Cruise control switch circuit	Click here
	Cruise SET indicator light circuit	Click here
	Combination meter assembly	Click here
	Power management control ECU	Click here