1998 SSANGYONG MUSSO Workshop Repair Manual

M161 ENGINE ELECTRICAL 1E2-11
Inspection & Maintenance (for E2.3 MSE)
1. Measure the primary resistance between the cable terminals
1 and 15 after removing the ignition cable wiring connector
(1 and 15) with ignition switch OFF.
Notice
Replace the ignition coil if out of the specified resistance.
lT1/2 : between No.71 and No.69
Notice
Check the ignition cable and the ECU if out of the
specified value.
3. Measure the secondary cable resistance between the
ignition coil 5a and 5b using a multimeter. 2. Measure the primary voltage(T1/1) between the ECU
terminals No.72 and No.69 during the engine cranking
(starter motor activated).
Specified Value 6 - 8.5 KW
Specified Value 0.9 - 1.6 W
Specified Value 200 - 350 V

1E2-12 M161 ENGINE ELECTRICAL
UNIT REPAIR
BATTERY
Inspection
Notice
lWhen charging the battery, do not leave the inflammable
objects around it.
lWhen checking the electrolyte of battery, put on
an eye protector and gloves.
1. Inspect the surface of the battery and replace if any defects
were found on it.
2. Check if the specific gravity of the electrolyte is within the
specified value.
Notice
lReplace the battery if the maximum tolerance of the
electrolyte between cells is out of the specified value.
lMeasure the specific gravity in the approx. 20°C
of ambient temperature.
3. Replenish the electrolyte if necessary.Battery Capacity(Ah)
Battery Specific Gravity
Max. Tolerance between Cells75
³ 1.24
³ 0.04

SECTION 1E3
OM600 ENGINE ELECTRICAL
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1E3-1
General Specifications . . . . . . . . . . . . . . . . . 1E3-1
Maintenance and Repair . . . . . . . . . . . . . . 1E3-2
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 1E3-2
TABLE OF CONTENTS
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.
Application
Alternator
Starter
Glow PlugDescription
12V - 75A
12V - 2.2kW
11.5V
SPECIFICATIONS
GENERAL SPECIFICATIONS
Glow Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . 1E3-2
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1E3-6
Starter Motor . . . . . . . . . . . . . . . . . . . . . . . . . 1E3-8

1E3-2 OM600 ENGINE ELECTRICAL
Preheating System
General information
The preheating system consists of control, coolant temperature
sensor and glow plugs.
lControl relay - preheating time.
lCoolant temperature sensor.
lGlow plug.
GLOW PLUG
1 Wiring Harness
2 Nut .............................................................. 4 Nm3 Wire Terminal
4 Glow Plug
MAINTENANCE AND REPAIR
ON-VEHICLE SERVICE

OM600 ENGINE ELECTRICAL 1E3-3
1. Preheating time - control relay.
Control relay functions as followings :
lSwitching of preheating current.
lIndication of preheating finish.
lControl of preheating sequence.
lIndication of fault.
2. Coolant temperature sensor.
Coolant temperature sensor senses coolant’s temperature
and signals it to the preheating relay continuously.
3. Glow plug
The glow plug parts are housing with M12 ´ 1.25 thread
and heating pin in housing. It is connected in a parallel circuit
with the specified voltage of 11.5V.
The heating element has a heating coil and a control coil
and they are connected in series.
1. Control Coil
2. Heater Coil
4. Current and temperature of glow plug
lCurrent of glow plug
While the preheating system operates, current of about
30A flows in each glow plug and temperature of heating
coil rises very fast.
Due to the rise of temperature, the resistance of control
coil increases therefore the current is controlled to
about 8~15A and that protects the glow plug from over-
heating.
lTemperature of glow plug
The temperature of the glow plug reaches up to 900°C
after about 9 seconds and up to 1,050°C after 30
seconds.

1E3-4 OM600 ENGINE ELECTRICAL
Preheating System Operation
1. Preheating before start.
Preheating time is different by coolant temperature and it is
on until the glow indicator light goes off.
2. Preheating after start.
Preheating continues for max. 60 seconds to rise in
characteristic of warming-up on engine after starting too.
3. Monitoring on glow plug.
Glow plugs are monitored by low current by the micro
processor in control relay respectively while running the
engine.
If glow indicator comes on after starting for about one minute,
it indicates on or several plugs are faulty.
Possible Cause
- One or several glow are faulty Problem
Glow indicator does not come on in preheating
time and comes on after starting the engine.
Glow indicator does not come on while
preheating and after starting engine.
Glow indicator does not come on and engine’s
starting is difficult or does not start at all.
Glow indicator comes on after starting for
about one minute.1
2
3
4- Faulty glow indicator
- Faulty circuit of glow indicator
- Faulty control relay
- Circuits short in one or several glow plugs
- Faulty preheating circuits
- Faulty control relay
- One or several glow plugs are faulty

OM600 ENGINE ELECTRICAL 1E3-5
Removal & Installation Procedure
1. Disconnect the negative terminal of battery.
2. Remove the nut (2).
3. Remove the glow plug (4).
4. Install the glow plug (4).
5. Tighten the nut (2).
Tightening Torque 20 Nm
Tightening Torque 4 Nm

1E3-6 OM600 ENGINE ELECTRICAL
ALTERNATOR
Preceding Work : Removal of poly V-belt
1 Cooling Fan
2 Bolt............................................................45Nm
3 Bolt............................................................45Nm4 Alternator
5 Plug Connection