SsangYong Rexton. Service manual — part 427
M161 ENGINE CONTROLS 1F2-25
SSANGYONG Y200
YAD1F0G0
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.
Failure
Code
Description
Trouble Area
Maintenance Hint
Random / Multiple
Misfire
When detection misfire of
multiple cylinder for source
of over the emission
threshold or catalyst
damage
•
Inspection the ignition system
•
Inspection the injection system
•
Inspection the fuel pressure
•
Inspection the compression pressure
•
Inspection the valve timing or clearance
•
Inspection the air flow sensor
•
Inspection the crankshaft position sensor
and air gap
•
Inspection the engine wiring system
•
Inspection the Engine Control Module
(ECM)
68
SSANGYONG Y200
1F2-26 M161 ENGINE CONTROLS
Spark Plug Cable Resistance Inspection
1. Turn the ignition switch “OFF” position.
2. Disconnect the spark plug cables Refer to Section 1E1, Engine electrical.
3. Measure the spark plug resistance using a multimeter.
Specified Value
1.8 ~ 2.2 k
Ω
Notice: Replace the spark plug cable if the measured values is out of the specified values.
SSANGYONG Y200
1F2-28 M161 ENGINE CONTROLS
YAD1F220
Failure
Code
Description
Trouble Area
Maintenance Hint
System 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.
•
Monitoring the actual battery voltages
through the scan tool
•
Inspection the Engine Control Module
(ECM) pin 12, 11, 10, 5 about short
circuit or open with bad contact
•
Inspection the over voltage protection
relay
•
Inspection the battery
•
Inspection ECM
08
SYSTEM VOLTAGE
M161 ENGINE CONTROLS 1F2-29
SSANGYONG Y200
YAD1F230
Failure
Code
Description
Trouble Area
Maintenance Hint
Starter signal recogni-
tion failure
When not detection of
starter signal
•
Inspection the Engine Control Module
(ECM) pin 2 circuit short or open with
bad contact
•
Inspection ECM
71
IGNITION SWITCH
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