1997 SSANGYONG KORANDO check engine

D AEW OO M Y_2000
SECTION 1F2
ENGINE CONTROLS
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 other -
wise noted.
TABLE OF CONTENTS
Engine and ECM Problem Check Report 1F2 -- 2....
Specifications 1F2 -- 3............................
Engine Data Display Table 1F2 -- 3.................
Fastener Tightening Specifications 1F2 -- 4..........
Fuel System Specification 1F2 -- 5.................
Temperature vs Resistance 1F2 -- 5................
Special Tools and Equipment 1F2 -- 6..............
Special Tools Table 1F2 -- 6.......................
Schematic and Routing Diagrams 1F2 -- 7..........
ECM Wiring Diagram
(2.3L DOHC -- MSE 3.53S) 1F2 -- 7..............
Diagnosis 1F2 -- 14................................
Failure Code Diagnosis 1F2 -- 14.....................
Clearing Failure Codes 1F2 -- 14...................
Failure Codes Table 1F2 -- 14.....................
Ignition System 1F2 -- 18...........................
Ignition Coil 1F2 -- 20.............................
Crankshaft Position (CKP) Sensor 1F2 -- 22.........
Camshaft Position (CMP) Sensor 1F2 -- 26..........
Camshaft Actuator 1F2 -- 30......................
Knock Sensor (KS) 1F2 -- 32......................
Spark Plug 1F2 -- 34.............................
System Voltage 1F2 -- 38.........................
Ignition Switch 1F2 -- 39..........................
Fuel System 1F2 -- 40..............................
Fuel Pump 1F2 -- 42.............................
Fuel Injector 1F2 -- 46............................
Purge Control Valve 1F2 -- 50.....................
Fuel Rail 1F2 -- 52...............................
Fuel Pressure Regulator 1F2 -- 54.................
Induction System 1F2 -- 56..........................
Throttle Valve Actuator 1F2 -- 56...................
Hot Film Air Mass (HFM) Sensor 1F2 -- 60..........
Engine Coolant Temperature (ECT) Sensor 1F2 -- 64.
Accelerator Pedal Module 1F2 -- 68................Cooling Fan 1F2 -- 72............................
A/C Compressor Relay 1F2 -- 73...................
Cruise Control Switch 1F2 -- 74....................
Traction Control System (TCS) 1F2 -- 75............
Stop Lamp Switch 1F2 -- 76.......................
Engine RPM 1F2 -- 77............................
Exhaust System 1F2 -- 78...........................
Catalytic Converter 1F2 -- 78......................
Oxygen Sensor 1F2 -- 80.........................
Engine Control Module 1F2 -- 86.....................
Serial Data Communication 1F2--88...............
Internal Failure 1F2 -- 90..........................
Electronic Throttle Controller Safety
Malfunction 1F2 -- 92...........................
Immobilizer 1F2 -- 94.............................
Maintenance and Repair 1F2 -- 95..................
On -- Vehicle Service 1F2 -- 95........................
Discharging the Pressure in Fuel System 1F2 -- 95...
Fuel Pump 1F2 -- 95.............................
Fuel Filter 1F2 -- 96..............................
Fuel Tank 1F2 -- 97..............................
Fuel Pressure Regulator 1F2 -- 98.................
Fuel Rail and Injector 1F2 -- 99....................
Engine Coolant Temperature Sensor 1F2 -- 100......
Throttle Body (Integrated with the
Actuator) 1F2 -- 101............................
Hot Film Air Mass (HFM) Sensor 1F2 -- 102.........
Knock Sensor 1F2 -- 102..........................
Pedal Position Sensor 1F2 -- 103...................
Oxygen Sensor 1F2 -- 103........................
Purge Control Valve 1F2 -- 104....................
Canister 1F2 -- 104...............................
Camshaft Position Sensor 1F2 -- 104...............
Crankshaft Position Sensor 1F2 -- 105..............
Engine Control Module 1F2 -- 105..................

1F2 -- 2 M161 ENGINE CONTROLS
D AEW OO M Y_2000
ENGINE AND ECM PROBLEM CHECK REPORT
VEHICLE AND CUSTOMER INFORMATION
Date problem Occurred
Customer NameVehicle Model
Driver NameVIN
Purchase dateEngine Model
License No.MileageKm
miles
MIL INFORMATION
Condition of MILjRemains onjSometimes illuminatesjDoes not illuminate
DTC inspection
(if available)jNormaljMalfunction code(s) (code )
jFreezed frame data ( )
PROBLEM DESCRIPTION
jEngine Does Not StartjNo crankingjNo initial combustionjNo complete combustion
jHard to StartjSlow cranking
jOthers
jPoor IdlingjIncorrect first IdlejAbnormal idle rpmjHigh (rpm)jLow (rpm)
jIdling UnstablejOthers
jPoor DriveabilityjHesitationjBack firejMuffler explosion (after-burning)
jSurgingjKnockingjPoor performancejOther
jEngine StalljSoon after startingjAfter accelerator pedal depressed
jAfter accelerator pedal releasedjDuring A/C operation
jShifting from N to D or D to N
jAt full steeringjOthers
jOthers
CONDITION WHEN PROBLEM OCCURS
Problem FrequencyjConstantjIntermittent (times per day/month)jOnce onlyjOthers
WeatherjFinejCloudyjRainyjSnowyjVarious/Others
Ambient TemperaturejHotjWar mjCooljCold (approx.____°F/____°C)
PlacejHighwayjSuburbsjInner CityjUphilljDownhill
jRough RoadjOthers
Engine TemperaturejColdjWarming UpjBefore warming upjAfter warm-up
jAny temp.jOthers
Engine OperationjStartingjJust after starting (min.)jIdlingjRacingjDriving
jConstant speedjAccelerationjDeceleration
jA/C switch ON/OFFjOther

1F2 -- 14 M161 ENGINE CONTROLS
D AEW OO M Y_2000
DIAGNOSIS
FAILURE CODE DIAGNOSIS
CLEARING FAILURE CODES
Notice:To prevent Engine Control Module (ECM) damage, the key must be OFF when disconnecting or reconnecting
the power to the ECM (for example battery cable, ECM pigtail connector, ECM fuse, jumper cables, etc.)
Parameters listed in the table may not be exactly the same as your reading due to the type of instrument or other
factors. If a failure code is displayed during the “TROUBLE CODE” in scan tool check mode, check the circuit for the
code listed in the table below. For details of each code, turn to the page referred to under the “See Page” for the re-
spective “Failure Code” in the below table.
Failure codes should be cleared after repairs have been completed.
FAILURE CODES TABLE
Failure
codeSee
PageDescription
001F2 -- 66Engine coolant temperature sensor low voltage
011F2 -- 66Engine coolant temperature sensor high voltage
021F2 -- 66Engine coolant temperature sensor plausibility
031F2 -- 62Intake air temperature sensor low voltage
041F2 -- 62Intake air temperature sensor high voltage
051F2 -- 62Intake air temperature sensor plausibility
061F2 -- 66Engine coolant temperature insufficient for closed loop fuel control
081F2 -- 38System voltage too low
091F2 -- 62Mass air flow sensor plausibility
101F2 -- 62Mass air flow sensor low voltage
111F2 -- 62Mass air flow sensor high voltage
171F2 -- 23Crankshaft position sensor signal failure (no engine revolution signal)
181F2 -- 23Crankshaft position sensor signal failure (rpm > max. value)
191F2 -- 27Camshaft position senosr signal : No.1 cylinder recognition failure
201F2 -- 23Crankshaft position sensor signal failure (gap recognition failure)
211F2 -- 90Transmission coding failure
231F2 -- 88CAN communication failure : ASR/MSR
241F2 -- 88CAN communication failure : ABS
251F2 -- 94Communication with transponder missing
261F2 -- 88CAN communication failure : TCU (A/T only)
291F2 -- 89CAN communication failure : ID 200h not plausible
301F2 -- 89CAN communication failure : ID 208h not plausible
311F2 -- 89CAN communication failure : communication initialization failure
321F2 -- 77Engine rpm output circuit short circuit to battery
331F2 -- 77Engine rpm output circuit short circuit to ground or open
341F2 -- 43Fuel pump relay short circuit to battery
351F2 -- 43Fuel pump relay short circuit to ground or open

1F2 -- 24 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Crankshaft Position Sensor Output Wave Inspection
1. Measure the output wave between the ECM termi-
nals No. 99 and No. 100 using the scan tool or the os-
cilloscope whileengine cranking (start motor
activated).
Notice:Check the segment or crankshaft position sen-
sor and air gap if cannot get the output wave as shown in
the figure.
YAA1F270
Crankshaft Position Sensor Insulator Resistance Inspection
1. Disconnect the coupling from ECM while the ignition switch is in “OFF” position.
2. Measure the resistance between the coupling terminal pin No. 100 and No. 69 using a multimeter.
Specified Value
>20 kΩ
Notice:Measure the check and ground terminal of the CKP sensor if out of the specified value.

1F2 -- 28 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Camshaft Position Sensor Output Wave Inspection
1. Measure the output wave between the ECM termi-
nals No. 104 and No. 106 using the scan tool or the
oscilloscope whileengine speed is at idle.
Notice:Replace the CAM sensor if cannot get the out-
put wave as shown in the figure.
KAA1F0O0
Camkshaft Position Sensor Power Supply Inspection
1. Disconnect the CMP sensor Connector.
2. Measure the resistance between the No. 1 and No. 3 pin of the CMP sensor connector while the ignition switch is in
“ON” position.
Specified Value
11 ~ 14 v
Notice:If the measured value is not within the specified value, check the cable.

M161 ENGINE CONTROLS 1F2 -- 33
D AEW OO M Y_2000
KAB1F440
Failure
CodeDescriptionTrouble AreaMaintenance Hint
56No. 1 knock sensor
signal failure
When recognition in more
than control gain threshold at
normal operational condition
of other system during over
75 and 3,000 rpm running
area (cylinder 1, 2, 3, 4)DInspection the ECM pin 118, 117 about
short circuit or open with bad contact
DInspection the KS 1 malfunction
DInspection the ECM
Circuit Description
The KS system is used to detect engine detonation, allowing the ECM to retard the ignition control spark timing based
on the KS signal being received. The KS signal’s amplitude and frequency depend upon the amount of knock being
experienced. The ECM monitors the KS signal and can diagnose the KS sensor and circuitry.
Knock Sensor Resistance Inspection
1. Disconnect the coupling from ECM while the ignition switch is in “OFF” position.
2. Measure the resistance between the coupling terminal pin No. 118 and No. 117 using a multimeter.
Specified Value
>10 MΩ
Notice:Replace the KS if the measured values is out of the specified values. Check the connector and wire connec-
tion between ECM and the KS if the measured values are normal.

1F2 -- 40 M161 ENGINE CONTROLS
D AEW OO M Y_2000
FUEL SYSTEM
The function of the fuel metering system is to deliver the correct amount of fuel to the engine under all operating condi-
tions. The fuel is delivered to the engine by the individual fuel injectors mounted into the intake manifold near each
cylinder.
The main fuel control sensors are the Mass Air Flow (MAF) sensor and the oxygen (O2) sensors.
The MAF sensor monitors the mass flow of the air being drawn into the engine. An electrically heated element is
mounted in the intake air stream, where it is cooled by the flow of incoming air. Engine Control Module (ECM) modu-
lates the flow of heating current to maintain the temperature differential between the heated film and the intake air at a
constant level. The amount of heating current required to maintain the temperature thus provides an index for the
mass air flow. This concept automatically compensates for variations in air density, as this is one of the factors that
determines the amount of warmth that the surrounding air absorbs from the heated element. MAF sensor is located
between the air filter and the throttle valve.
Under high fuel demands, the MAF sensor reads a high mass flow condition, such as wide open throttle. The ECM
uses this information to enrich the mixture, thus increasing the fuel injector on-- time, to provide the correct amount of
fuel. When decelerating, the mass flow decreases. This mass flow change is sensed by the MAF sensor and read by
the ECM, which then decreases the fuel injector on-- time due to the low fuel demand conditions.
The O2 sensors are located in the exhaust pipe before catalytic converter. The O2 sensors indicate to the ECM the
amount of oxygen in the exhaust gas, and the ECM changes the air/fuel ratio to the engine by controlling the fuel
injectors. The best air/fuel ratio to minimize exhaust emissions is 14.7 to 1, which allows the catalytic converter to
operate most efficiently. Because of the constant measuring and adjusting of the air/fuel ratio, the fuel injection system
is called a “closed loop” system.
The ECM uses voltage inputs from several sensors to determine how much fuel to provide to the engine. The fuel is
delivered under one of several conditions, called ‘‘modes”.
Starting Mode
When the ignition is turned ON, the ECM turns the fuel pump relay on for 1 second. The fuel pump then builds fuel
pressure. The ECM also checks the Engine Coolant Temperature (ECT) sensor and the Throttle Position (TP) sensor
and determines the proper air/fuel ratio for starting the engine. This ranges from 1.5 to 1 at -- 36°C(--33°F) coolant
temperature to 14.7 to 1 at 94°C (201°F) coolant temperature. The ECM controls the amount of fuel delivered in the
starting mode by changing how long the fuel injector is turned on and off. This is done by ‘‘pulsing” the fuel injectors for
very short times.
Run Mode
The run mode has two conditions called ‘‘open loop” and ‘‘closed loop”.
Open Loop
When the engine is first started and it is above 690 rpm, thesystem goes into “open loop” operation. In “open loop”, the
ECM ignores the signal from the HO2S and calculates the air/fuel ratio based on inputs from the ECT sensor and the
MAF sensor. The ECM stays in “open loop” until the following conditions are met:
DThe O2 has a varying voltage output, showing that it is hot enough to operate properly.
DThe ECT sensor is above a specified temperature (22.5°C).
DA specific amount of time has elapsed after starting the engine.
Closed Loop
The specific values for the above conditions vary with different engines and are stored in the Electronically Erasable
Programmable Read -- Only Memory (EEPROM). When these conditions are met, thesystem goes into “closed loop”
operation. In “closed loop”, the ECM calculates the air/fuel ratio (fuel injector on-- time) based on the signals from the
O2 sensors. This allows the air/fuel ratio to stay very close to 14.7 to 1.
Acceleration Mode
The ECM responds to rapid changes in throttle position and airflow and provides extra fuel.
Deceleration Mode
The ECM responds to changes in throttle position and airflow and reduces the amount of fuel. When deceleration is
very fast, the ECM can cut off fuel completely for short periods of time.

1F2 -- 44 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Measure the Fuel Delivery from the Fuel Pump
1. Disconnect the return pipe from fuel distributor and insert the appropriate hose into it.
2. Place the hose end into the beaker with the minimum capacity of 1 Liter
3. Turn the ignition switch to “ON” position.
4. Connect the terminal No. 33 and No. 5 of ECM with a service wire.
5. Measure the fuel delivery from the fuel pump
Specified Value
1 Liter/max. 35 sec.
Notice:Check the fuel filter and fuel line when the fuel delivery is not within specified value.
Measure the Current Consumption of Fuel Pump
1. Remove the fuel pump relay from fuse and relay box in trunk, and turn the ignition switch to “ON” position.
2. Using a multimeter, measure the current consumption by connecting the terminal No. 30 and No. 87 of the fuel
pump relay connector.
Specified Value
5~9A
Notice:Replace the fuel pump relay if the measured value is over 9 A.