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Problem Symptoms Table

If a normal system code is displayed during the DTC check but the problem still occurs, check the suspected areas for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting .

HINT:

Inspect the "Fuse" and "Relay" before confirming the suspected areas as shown in the table below .

Inspect each suspected area for the corresponding symptom in numerical order.

PROBLEM SYMPTOMS TABLE - DYNAMIC LASER CRUISE SYSTEM

Symptom Suspected Area
Main switch cannot be turned ON. (Cruise indicator light in combination meter does not come on.)
  1. Cruise control switch circuit
  2. Cruise main indicator light circuit
  3. ECM
Vehicle speed setting cannot be done. (Although indicator light in combination meter comes on when the main switch is turned ON, it goes off when vehicle speed is set.)
  1. Cruise control switch circuit
  2. ECM
Setting cannot be done. (Indicator light in combination meter comes on when the main switch is turned ON and it remains ON while setting.)
  1. Cruise control switch circuit
  2. Stop light switch circuit
  3. Park/Neutral position switch circuit (DTC P0705)
  4. Transmission control switch circuit
  5. Combination meter system
  6. ECM
While the vehicle is driven with cruise control, the set control is cancelled. (Indicator light and CRUISE remain ON.)
  1. Cruise control switch circuit
  2. Vehicle speed sensor circuit
  3. Stop light switch circuit
  4. Cruise main indicator light circuit
  5. Park/Neutral position switch circuit (DTC P0705)
  6. ECM
Hunting (Speed is not constant.)
  1. Vehicle speed sensor circuit
  2. Malfunction in speedometer circuit
  3. Laser sensor power source circuit
  4. Distance control ECU power source circuit
  5. Distance control ECU
  6. ECM
Setting cannot be cancelled. (When Coast, Acceleration, Resume, Set speed change and Control switch are operated.)
  1. Cruise control switch circuit
  2. ECM
Erroneous detection or lost sight of the vehicle ahead.
  1. Clean laser sensor with soft cloth, etc.
  2. Improper aiming of laser sensor beam axis
Alarm buzzer does not sound.
  1. Buzzer circuit
  2. VSC system
  3. Laser sensor power source circuit
  4. Distance control ECU power source circuit
  5. Distance control ECU
  6. ECM
Set distance cannot be changed.
  1. Combination meter system
  2. Distance control switch circuit
  3. Cruise control switch circuit
  4. ECM
No display
  1. Combination meter system
  2. ECM
No brake control (when decelerating)
  1. VSC system
  2. Distance control ECU power source circuit
  3. Distance control ECU
  4. ECM
Constant speed mode cannot be turned on.
  1. Cruise control switch circuit
  2. Combination meter system
  3. ECM
Vehicle speed setting cannot be cancelled with wiper LO/HI. (Including automatic wiper)
  1. Rain sensor system
  2. Wiper switch circuit
  3. Distance control ECU
  4. ECM
Unable to adjust (complete) the optical axis of the laser sensor.
  1. Check for DTC P1570
  2. Check the position, distance and angle of the reflector
  3. Check the installation of the laser sensor
  4. Laser sensor
  5. ECM
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