SsangYong Rexton. Service manual - part 403

M162 ENGINE CONTROLS  1F1-25

SSANGYONG  Y200

YAD1F210

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

1F1-26  M162 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

1F1-28  M162 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

M162 ENGINE CONTROLS  1F1-29

SSANGYONG  Y200

YAD1F230

Failure

Code

Description

Trouble  Area

Maintenance Hint

Starter signal

recognition 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