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Problem Symptoms Table

CRUISE CONTROL SYSTEM 

PROBLEM SYMPTOMS

Symptom Suspected area See
Main switch cannot be turned ON. (CRUISE main indicator light on combination meter does not illuminate.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
3. Hybrid vehicle control ECU TERMINALS OF ECU 
Vehicle speed setting cannot be done. (CRUISE main indicator light on combination meter illuminates when main switch is turned ON, but turns off when operating SET function.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Hybrid vehicle control ECU TERMINALS OF ECU 
Vehicle speed setting cannot be done. (CRUISE main indicator light on combination meter illuminates when main switch is turned ON, and remains illuminated when operating SET function.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Stop light switch circuit DTC P0571 BRAKE SWITCH "A" CIRCUIT 
3. Park/neutral position switch circuit (DTC P0705) DTC P0705-757 Transmission Range Sensor Circuit; DTC P0705-758 Transmission Range Sensor Circuit; DTC P0851-775 Park / Neutral Switch Input Circuit Low
4. Combination meter system HOW TO PROCEED WITH TROUBLESHOOTING
5. Hybrid vehicle control ECU TERMINALS OF ECU 
While the vehicle is driving with cruise control, the set control is canceled. (CRUISE main indicator light remains illuminated.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Vehicle speed sensor circuit DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION 
3. Stop light switch circuit DTC P0571 BRAKE SWITCH "A" CIRCUIT 
4. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
5. Park/neutral position switch circuit (DTC P0705) DTC P0705-757 Transmission Range Sensor Circuit; DTC P0705-758 Transmission Range Sensor Circuit; DTC P0851-775 Park / Neutral Switch Input Circuit Low
6. Hybrid vehicle control ECU TERMINALS OF ECU 
Hunting (Speed is not constant.) 1. Vehicle speed sensor circuit DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION 
2. Hybrid vehicle control ECU TERMINALS OF ECU 
Vehicle speed setting cannot be canceled. (When Coast, Acceleration, Resume, Set speed change and Control switch are operated.) 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. Hybrid vehicle control ECU TERMINALS OF ECU 
DTC is not output, or is output when it should not be. 1. Diagnosis circuit TC AND CG TERMINAL CIRCUIT 
2. Hybrid vehicle control ECU TERMINALS OF ECU 
CRUISE MAIN indicator light does not come on. 1. Cruise control switch circuit CRUISE CONTROL SWITCH CIRCUIT 
2. CRUISE main indicator light circuit CRUISE MAIN INDICATOR LIGHT CIRCUIT 
3. Hybrid vehicle control ECU TERMINALS OF ECU 
4. Combination meter HOW TO PROCEED WITH TROUBLESHOOTING