1997 SSANGYONG KORANDO engine

1F2 -- 32 M161 ENGINE CONTROLS
D AEW OO M Y_2000
KNOCK SENSOR (KS)
YAA1F320
The Knock Sensor (KS) detects abnormal knocking in the engine. The two KS are mounted in the engine block near
the cylinders. The sensors produce an output voltage which increases with the severity of the knock. This signal is sent
to the Engine Control Module (ECM) via a shielded cable. The ECM then adjusts the ignition timing to reduce the spark
knock.

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 -- 34 M161 ENGINE CONTROLS
D AEW OO M Y_2000
SPARK PLUG
YAA1F990

M161 ENGINE CONTROLS 1F2 -- 35
D AEW OO M Y_2000
KAB1F450
Failure
CodeDescriptionTrouble AreaMaintenance Hint
68Random / Multiple
Misfire
When detection misfire of
multiple cylinder for source of
over the emission threshold or
catalyst damage
DInspection the ignition system
DInspection the injection system
DInspection the fuel pressure
DInspection the compression pressure
DInspection the valve timing or
clearance
DInspection the air flow sensor
DInspection the crankshaft position
sensor and air gap
DInspection the engine wiring system
DInspection the Engine Control Module
(ECM)
Circuit Description
The ECM monitors the crankshaft and camshaft positions to detect if the engine is misfiring. The ECM looks for a quick
drop in crankshaft speed. Misfire multiple cylinder is monitored by engine roughness measuring. The actual roughness
value is compared with the actual (emission and catalyst damage) threshold.

1F2 -- 36 M161 ENGINE CONTROLS
D AEW OO M Y_2000
Spark Plug Cable Resistance Inspection
1. Turn the ignition switch “OFF” position.
2. Disconnect the spark plug cables Refer toSection 1E1, Engine electrical.
3. Measure the spark plug resistance using a multimeter.
Specified Value
1.8 ~ 2.2 kΩ
Notice:Replace the spark plug cable if the measured values is out of the specified values.

M161 ENGINE CONTROLS 1F2 -- 37
D AEW OO M Y_2000
BLANK

1F2 -- 38 M161 ENGINE CONTROLS
D AEW OO M Y_2000
SYSTEM VOLTAGE
KAB1F190
Failure
CodeDescriptionTrouble AreaMaintenance Hint
08System voltage too low
Malfunction in recognition of
system source voltage.
Less than minimum 8 volts in
2,000 rpm below, or less than
10 volts in 2,000 rpm above.
DMonitoring the actual battery voltages
through the scan tool
DInspection the Engine Control Module
(ECM) pin 12, 11, 10, 5 about short
circuit or open with bad contact
DInspection the over voltage protection
relay
DInspection the battery
DInspection ECM

M161 ENGINE CONTROLS 1F2 -- 39
D AEW OO M Y_2000
IGNITION SWITCH
KAB1F200
Failure
CodeDescriptionTrouble AreaMaintenance Hint
71Starter signal
recognition failureWhen not detection of starter
signal
DInspection the Engine Control Module
(ECM) pin 2 circuit short or open with
bad contact
DInspection ECM