SsangYong Rexton. Manual - part 93

DI08-25

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROL SYSTEM

DI ENG SM - 2004.4

Vehicle Speed Sensor

The ABS or ESP control unit sends the vehicle speed signals to ECU. ECU uses these signals to calculate the vehicle
speed and meter cluster shows signals as vehicle speed.

Function

- Limits idle control correction duty range

- Controls cooling fan

- Cuts fuel injection if exceeds max. speed

- Controls vehicle shifting feeling

- Used for exhaust gas control mode

ABS

or

ESP control unit

CAN communication

<Circuit diagram of booster pressure sensor>

Y220_08020

Ground

REF 5V

SIG

<Circuit diagram of vehicle speed sensor>

Y220_08021

DI08-26

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROL SYSTEM

DI ENG SM - 2004.4

Other switches

Brake switch

Brake switch detects brake pedal operations and then sends to engine ECU. It has dual structure with 2 combined
switches and there are brake switch 1 and 2. When these 2 signals are input, engine ECU recognizes as normal brake
signals. These switch signals are related with accelerator pedal sensor operations and used to control the fuel volume
during braking. It means there are no problems in operating accelerator pedal when the brake pedal is operated but the
fuel volume reduces if operates brake pedal while the accelerator pedal is depressed.

<Brake switch circuit>

Clutch pedal switch

Clutch pedal switch is installed on the upper of the clutch and sends clutch pedal operations to engine ECU. Contact
type switch allows engine ECU to recognize the shifting points to correct the fuel volume. It means it corrects fluctuation
happens during gear shifting. Another different function is canceling auto cruise function if equipped (auto cruise control
- equipped for export).

<Clutch pedal switch circuit>

Y220_08022

Y220_08023

Brake pedal switch (NC)

Brake lamp switch (NO)

Clutch pedal switch (NO)

Engine

ground

Barometric Pressure Sensor

It is built-in the ECU and detects absolute pressure of atmosphere to correct fuel injection timing and injection volume
according to altitude.

ELECTRIC DEVICES AND

SENSORS

SECTION 

DI09

DI09-1

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ELECTRIC DEVICES AND SENSORS

DI ENG SM - 2004.4

ELECTRIC DEVICES

AND SENSORS

 00

SECTION DI09

Table of Contents

ELECTRIC DEVICES AND SENSORS ........................ DI09-3

Sensors in engine compartment ............................. DI09-3

Electric devices in engine compartment ................. DI09-4

Specifications .......................................................... DI09-5

Circuit diagram of preheating system ..................... DI09-6

Circuit diagram of starting and alternator .............. DI09-7

TROUBLE DIAGNOSIS ............................................... DI09-8

General ................................................................... DI09-8

Alternator .............................................................. DI09-10

Starter ................................................................... DI09-12

Preheating system ................................................ DI09-14

Preheating time relay ............................................ DI09-16

Glow plug .............................................................. DI09-17

SPECIAL TOOLS AND EQUIPMENT ........................ DI09-19