SSANGYONG NEW REXTON 2012 Service Manual

8510-23
2. CONFIGURATION
1) Circuit Diagram
The engine ECU detects the operating conditions of cruise control system, and monitors the braking
performance, vehicle speed, road conditions and ESP system operation. If the engine ECU determines
that there are not any problem to drive in cruise control mode, the vehicle can be operated by cruise
switch signals (decelerating, accelerating, cruising).

2) Configuration
Test voltage(VCC 5V)
FUNCTION KEY VOLUE REMARK
MAIN 0.15 ~ 0.55V -
DECEL 0.7 ~ 1.1V -
ACCEL 1.6 ~ 2.0V -
RESUME 2.52 ~ 2.92V -

8510-23
3. OPERATION
1) Setting a Desired Speed
To operate the cruise control, accelerate to the desired speed, which must be more than 36 km/h and
less than 150 km/h.
When the desired speed is reached, push up the ACCEL switch of the cruise control lever or push
down the DECEL switch for 1 second per one switching and then release the accelerator pedal slowly.
Now, the vehicle is cruised by this system with the set speed. You don't need to use the accelerator
pedal.
Refer to the following pages for details of operation. 1.
2.
3.
4.
Never use the cruise control system until you get used to it.
Improper use or not fully aware of this function could result in collision and/or personal injuries.

2) Accelerating with the Cruise Control System
(1) While the cruise control system is running
Push up the ACCEL switch of the cruise control lever and hold it until the desired speed is reached
without an accelerator pedal intervention.
When the desired speed is reached, release the lever. 1.
2.
(2) When the cruise control system is not running
To increase the speed with the cruise control system while the system is not running, follow the
procedures below.
Accelerate using the accelerator pedal over 36 km/h.
Push up the ACCEL switch of the cruise control lever and hold it. And then release the accelerator
pedal slowly.
When the desired speed is reached, release the lever. 1.
2.
3.
(3) Tap-up while the cruise control system is running
To increase the vehicle speed in stages while the cruise control system is running, follow the procedures
below.
Push up the ACCEL switch of the cruise control lever less than 0.5 second per one switching while
the cruise control system is running. This is a tap-up switching. When you operate a tap-up switching,
the vehicle is accelerated for 1.3 km/h over the previous set speed.
If you want to accelerate for 13 km/h, operate the tap-up switching ten times without accelerating with
the cruise control system. 1.
2.

8510-23
3) Decelerating with the Cruise Control System
(1) While the cruise control system is running
Push down the DECEL switch of the cruise control lever and hold it until the desired speed is reached
without a brake pedal intervention. But the cruise control system cannot maintain the cruise function at
less than 34 km/h.
When the desired speed is reached, release the lever. 1.
2.
(2) When the cruise control system is not running
To decrease the vehicle speed with the cruise control system when the system is not running, follow the
procedures below.
Push down the cruise control switch lever to DECEL side and hold it until the desired speed is
reached while the vehicle speed is over 36 km/h.
And then release the accelerator pedal slowly.
When the desired speed is reached, release the lever. But the cruise control system cannot maintain
the cruise function at less than 34 km/h. 1.
2.
3.
(3) Tap-down while the cruise control system is running
To decrease the vehicle speed in stages while the cruise control system is running, follow the
procedures below.
Push down the DECEL switch of the cruise control lever less than 0.5 second per one switching while
the cruise control system is running. This is a tap-down switching. When you operate a tap-down
switching, the vehicle is decelerated for 1.0 km/h below the previous set speed.
If you want to decelerate for 10 km/h, operate the tap-down switching ten times without the brake pedal
intervention. 1.
2.

4) Recovery of Set Speed (RESUME)
Even if the cruise control is cancelled, the previous set cruise speed can be recovered by pulling up the
cruise control lever when the current vehicle speed is over 36 km/h without an acceleration intervention.
But if you turn off the ignition switch, the memorized set speed is cleared and you cannot recover the
previous set speed.
But the driver should know the previous set speed to react to the changed vehicle speed properly. If the
vehicle speed increases abruptly, depress the brake pedal to adjust the vehicle speed properly.

8510-23
5) Normal Cancellation of the Cruise Control
The cruise control system will be canceled when one or more items of the following conditions are
applied;
When the brake pedal is depressed or When ESP is activated.
When the cruising speed is downed less than 34 km/h
When applying the parking brake during driving.
When using the clutch in order to shift (M/T only). 1.
2.
3.
4.
Keep the main cruise control switch in the neutral position when not using the cruise control.

Do not move the shift lever to Neutral position while driving with the cruise control turned on.
Otherwise, it may result in system malfunction or accidents.
Always be prepared to use the brake or accelerator pedal for safe driving while the cruise control
system is running.
The actual speed can be different from the set speed momentarily when driving on a uphill or
downhill. So, it is recommended to disable the cruise control function on a uphill or downhill. hen
driving on a steep hill use the engine brake and foot brake properly to protect the vehicle system
and for a safe driving.
Ensure that the safe distance is maintained and use the brake pedal if needed. 1.
2.
3.
4.
(1) Abnormal Cancellation of the Cruise Control
When the rapid deceleration is applied without braking.
When the rapid acceleration is applied without acceleration pedal intervention.
When the cruise control lever is faulty.
When the brake switch and the brake light switch input signal are implausible. 1.
2.
3.
When the cruise control function is cancelled abnormally or intermittent problems occur, stop the vehicle
and turn off the ignition switch and remove the key to reset the system. After a while, turn on the ignition
switch again to operate the cruise control system.

1793-00
1. SPECIFICATION
Item Specification
E-EGR valveMotorEGR response time 50 ms
Driven by DC motor
Valve EGR gas flow rate 120 kg/h
Cooling capacity 8.3 kW or more
Cooling fin type Wavy fin
Cooler type U-shaped
E-EGR bypass valve Solenoid valve Drivien byVacuum
(Solenoid valve)
E-EGR cooler
Position sensorSensing type Hole sensor
Supplied voltageMaximum signal
range5% ~ 95%
Maximum power
consumption

1. SYSTEM DESCRIPTION
1) Overview
The EGR (Electric-Exhaust Gas Recirculation) valve reduces the NOx emission level by recirculating
some of the exhaust gas to the intake system.
To meet Euro-V regulation, the capacity and response rate of E-EGR valve in D20DTR engine have been
greatly improved. The EGR cooler with high capacity reduces the Nox, and the bypass valve reduces the
CO and HC due to EGR gas before warming up.
Also, the engine ECU adjusts the E-EGR opening by using the air mass signal through HFM sensor. If
the exhaust gas gets into the intake manifold when the EGR valve is open, the amount of fresh air
through HFM sensor should be decresed.
Benefits of E-EGR valve
Improved accuracy and response through electric control
Feedback function (Potentiometer)
Preventing chattering of EGR valve and improved durability
Self-cleaning function -
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