CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

Tip:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.

Table 1. Cruise Control System
Symptom	Suspected Area	Link
The cruise control system cannot be turned on.	Cruise control main switch circuit	Click here
	Cruise main indicator light circuit	Click here
	Combination meter assembly	Click here
	Hybrid vehicle control ECU	Click here
Vehicle speed cannot be set (the cruise control indicator light on the combination meter assembly illuminates when the cruise control main switch is turned on, but turns off when SET function is operating).	Cruise control main switch circuit	Click here
	Hybrid vehicle control ECU	Click here
Vehicle speed cannot be set (the cruise control indicator light on the combination meter assembly illuminates when the cruise control main switch is turned on, and remains illuminated when SET function is operating).	Electronically controllde brake system	Click here
	Stop light switch circuit	Click here
	Cruise control main switch circuit	Click here
	Transmission control switch circuit	Click here
	Combination meter assembly	Click here
	Hybrid vehicle control ECU	Click here
The cruise control is canceled while it is operating.	Electronically controllde brake system	Click here
	Cruise control main switch circuit	Click here
	Stop light switch circuit	Click here
	Transmission control switch circuit	Click here
	Combination meter assembly	Click here
	Hybrid vehicle control ECU	Click here
Pulling back on the cruise control main switch does not cancel the cruise control.	Cruise control main switch circuit	Click here
	Hybrid vehicle control ECU	Click here
The cruise control is not canceled when vehicle speed drops below the low speed limit.	Electronically controllde brake system	Click here
	Hybrid vehicle control ECU	Click here
Depressing the brake pedal does not cancel the cruise control.	Stop light switch circuit	Click here
	Hybrid vehicle control ECU	Click here
Moving the shift lever does not cancel the cruise control.	Hybrid control system	Click here
	Transmission control switch circuit	Click here
	Shift lever position sensor	Click here
	Transmission floor shift assembly	Click here
	Hybrid vehicle control ECU	Click here
Hunting (Speed is not constant.)	Electronically controllde brake system	Click here
	Hybrid control system	Click here
	SFI system (w/ EGR System)	Click here
	SFI system (w/o EGR System)	Click here
	SFI system (w/ Canister Pump System)	Click here
	Hybrid vehicle control ECU	Click here
Cruise control SET indicator light does not illuminate.	Cruise SET indicator light circuit	Click here
	Cruise control main switch circuit	Click here
	Combination meter assembly	Click here
	Hybrid vehicle control ECU	Click here