Kia Optima: Schematic Diagrams - Cruise Control System - Engine Electrical SystemKia Optima: Schematic Diagrams

System Block Diagram

Component Parts And Function Outline


Component Parts And Function Outline
Component part
Function
ECU
Controls engine.
MCU
Controls drive motor.
ABS
Sends vehicle speed to HCU.
HCU
Receives signals from sensor and control switches.
Cluster (Cruise control indicator)
Illuminate when CRUISE main switch is ON (Built into cluster)
Cruise Control switches
ON/OFF switch
Switch for automatic speed control power supply.
Resume/Accel switch
Controls automatic speed control functions by Resume/Accel switch (Set/Coast switch)
Set/Coast switch
Cancel switches
Cancel switch
Sends cancel signals to HCU.
Brake-pedal switch
Transaxle range switch (TCU)

Description and Operation
Cruise Control The cruise control system is engaged by the cruise "ON/OFF" main switch located on right of steering wheel column. The system has the capability to cruise, coast, accelerate and ...

Troubleshooting
Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating accelerati ...

See also:

General
1. Basically, all measurements in this manual are taken with a tracking gauge. 2. When a measuring tape is used, check to be sure there is no elongation, twisting or ...

Transaxle Oil Temperature Sensor Specifications
Specifications Type: Negative Thermal Coefficient Type Temp.(°C)°FResistance (k?)(-40)-4046.8(-20)-4.015.6(0)32.05.88(20)68.02.51(40)104.01.17(60)140.00.59(80)176.00.32(100)212.00.18(120)248.0 ...

Removal
1. Lift the vehicle. 2. Disconnect the fuel filler hose (A). 3. Disconnect the ventilation hose (B) from the fuel tank air filter. ...

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