1997 SSANGYONG KORANDO ignition switch

M161 ENGINE CONTROLS 1F2 -- 67
D AEW OO M Y_2000
3. Turn the ignition switch to “OFF” position.
4. Disconnect the ECT sensor connector.
5. Turn the ignition switch to “ON” position.
6. Measure the resistance between the ECT sensor terminal pin No. 1 and No. 4.
Temperature (°C)
Specified Value (Ω)
202,500
80322
100185
Notice:Replace wiring and coolant temperature sensor if out of specified value.

1F2 -- 70 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Acceleration Pedal Position Sensor 1 Inspection
1. Turn the ignition switch to “ON” position.
2. Measure the signal voltage between the ECM pin No. 47 and No. 31 while operating the accelerator pedal as follow-
ing conditions.
DNot depress the pedal (closed throttle position)
DFully depress the pedal (full throttle with kick down)
Condition of Throttle Valve
Specified Value (V)
Closed Throttle Valve0.3 ~ 0.7
Fully Depressed Throttle Valve4.3 ~ 4.8
Notice:If measured value is not within the specified value, check the pedal valve sensor and the supply voltage to
APP 1 sensor.
Acceleration Pedal Position Sensor 2 Inspection
1. Turn the ignition switch to “ON” position.
2. Measure the signal voltage between the ECM pin No. 48 and No. 50 while operating the accelerator pedal as follow-
ing conditions.
DNot depress the pedal (closed throttle position)
DFully depress the pedal (full throttle with kick down)
Condition of Throttle Valve
Specified Value (V)
Closed Throttle Valve0.1 ~ 0.4
Fully Depressed Throttle Valve2.1 ~ 2.5
Notice:If measured value is not within the specified value, check the pedal valve sensor and the supply voltage to
APP sensor 2.

1F2 -- 76 M161 ENGINE CONTROLS
D AEW OO M Y_2000
STOP LAMP SWITCH
KAB1F320
Failure
CodeDescriptionTrouble AreaMaintenance Hint
135Stop lamp switch failure
When malfunction of stop
lamp switch – implausible
condition of stop lamp signal
input
DMonitoring the actual operational
status and vehicle speed signal
through scan tool
DInspection the Engine Control Module
(ECM) pin 49 about short circuit or
open with bad contact
DInspection the contact condition of
stop lamp switch
DInspection the ECM
Circuit Description
The stop lamp switch is normally opened. When the ignition switch ON and brake ON, the battery voltage is supplied to
the ECM. A scan tool should display ON when brake pedal is depressed and should read OFF with brake pedal rele-
ased.

1F2 -- 84 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Oxygen Sensor Signal Voltage Inspection
1. Maintain the engine speed is at idle while the coolant temperature is over 80°C.
2. Measure the oxygen sensor signal voltage between the ECM terminal No. 16 and No. 17.
Specified Value
-- 0.2 ~ 1.0 v
Notice:If the measured value is not within the specified value, the possible cause may be in cable, oxygen sensor or
ECM
Oxygen Sensor Heating Voltage Inspection
1. Maintain the engine speed is at idle while the coolant temperature is over 80°C.
2. Measure the oxygen sensor signal voltage between the ECM terminal No. 11 and No. 9.
Specified Value
11 ~ 14 v
Notice:If the measured value is not within the specified value, the possible cause may be in cable, oxygen sensor or
ECM
Oxygen sensor Heating Current Consumption Inspection
1. Turn the ignition switch to “ON” position.
2. Measure the oxygen sensor heating current consumption between the ECM terminal No. 9 and No. 5.
Specified Value
0.2~2.0A
Notice:If the measured value is not within the specified value, the possible cause may be in cable, oxygen sensor or
ECM

1F2 -- 86 M161 ENGINE CONTROLS
D AEW OO M Y_2000
ENGINE CONTROL MODULE
YAA1F830
The Engine Control Module (ECM), located inside the right side kick panel, is the control center of the fuel injection
system. It constantly looks at the information from various sensors and controls the systems that affect the vehicle’s
performance. Engine rpm and air mass are used to measure the air intake quantity resulting in fuel injection metering.
The ECM also performs the diagnostic functions of the system. It can recognize operational problems, store failure
code(s) which identify the problem areas to aid the technician in making repairs.
There are no serviceable parts in the ECM. The calibrations are stored in the ECM in the Programmable Read Only
Memory (PROM).
The ECM supplies either 5 or 12 volts to power the sensors or switches. This is done through resistance in the ECM
which are so high in value that a test light will not come ON when connected to the circuit. In some cases, even an
ordinary shop voltmeter will not give and accurate reading because its resistance is too low. You must use a digital
voltmeter with a 10 Mohm input impedance to get accurate voltage readings. The ECM controls output circuits such as
the ignition coils, the fuel injectors, the fuel pump relay, the camshaft actuator, the canister purge valve, etc., by con-
trolling the ground circuit.

OM600 ENGINE CONTROLS 1F3 -- 5
D AEW OO M Y_2000
VACUUM CONTROLSYSTEM TEST
1 Ventilation (To Passenger Compartment)
2 Engine Cut -- Off Valve (Ignition Key Switch)
3 Auto-- locking Hub Solenoid Valve
4 Engine Stop Valve Unit
5 PLA Vacuum Unit (Idle Speed Adjustment)6Engine
7 Vacuum Pump
830_Thermovalve
9 Fuel Injection Pump
Test Data
Idle Speed IncreaseAt least 100 rpm at approx. 500mbr
Permissible Pressure Drop of System400 -- 500mbar approx. 1 min.

SECTION 4A
HYDRAULIC BRAKES
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when
a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this
cable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK
unless otherwise noted.
TABLE OF CONTENTS
Description and Operation...................................4A-2
General Description.............................................4A-2
Diagnostic Information and Procedures..............4A-3
Brake System Testing ..........................................4A-3
Brake Hose Inspection.........................................4A-3
Brake Warning Lamp Circuit Description..............4A-4
Brake Warning Lamp Diagnosis...........................4A-5
LCRV (Load Conscious Reducing Valve)..............4A-8
Repair Instructions..............................................4A-10On-Vehicle Service...............................................4A-10
Manual Bleeding The Brakes.............................4A-10
Front Brake Hose...............................................4A-13
Rear Brake Hose...............................................4A-13
Stoplamp Switch................................................4A-14
Brake Pedal.......................................................4A-14
Specifications.....................................................4A-15
General Specification .........................................4A-15
Fastener Tightening Specifications.....................4A-16

SSAMGYONG MY2002
4A-4 HYDRAULIC BRAKES
KAA4A010
BRAKE WARNING LAMP CIRCUIT DESCRIPTION
Diagnostic Aids
The BRAKE lamp glows brightly when the ignition is
ON and either the parking brake lever switch or the
brake fluid level switch is closed.
If neither switch is closed, the BRAKE lamp receives
a ground through the generator, and it glows dimly
when the ignition is ON and the engine is off. When
the engine starts, the generator creates voltage. With
voltage on both sides of the lamp, the lamp turns off.
Test Description
The numbers below refer to steps in the diagnostic
table.
1. This step begins the test sequence for a BRAKE
warning lamp that stays on when the engine is run-
ning.
2. This step begins the test sequence for a BRAKE
warning lamp that never turns on.