relay SSANGYONG MUSSO 2003 Service Manual

1B3-16 OM600 ENGINE MECHANICAL
16. Remove the power steering pump lines.Notice Completely drain the fluid.
17. Disconnect the fuel feed line with prefilter from the feed pump on injection pump.
18. Vehicle with automatic transmission. Remove the hydraulic lines (19, 20) from oil cooler (2).
19. Disconnect the engine harness.
20. Disconnect the preheating time relay cable.

1B3-18 OM600 ENGINE MECHANICAL
27. Disconnect the preheating time relay sensor plug.
28. Disconnect the coolant temperature sensor plug.
29. Disconnect the accelerator cable from the control linkage.Installation Notice
Tightening Torque 8 - 18 Nm
30. Loosen the connection of control pressure cable (an arrow) used in auto transmission.

1E3-2 OM600 ENGINE ELECTRICAL
Preheating System General information The preheating system consists of control, coolant temperature sensor and glow plugs.
Control relay - preheating time.
Coolant temperature sensor.
Glow plug.
GLOW PLUG
1 Wiring Harness
2 Nut .............................................................. 4 Nm 3 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 :
Switching of preheating current.
Indication of preheating finish.
Control of preheating sequence.
Indication 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 Current 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.
Temperature 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 microprocessor in control relay respectively while running theengine. 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

M162 ENGINE CONTROLS 1F1-7
41 44455657 58 59606264 65 66677172 73 74757677 78 79808182 83 86 8789
0001 02 0304 05 08091011 17 1819 20 21 2324 25 26272930 31 34 3540
Failure
code Description
Coolant temperature sensor open Coolant temperature sensor shortCoolant temperature sensor signal failureIntake temperature sensor openIntake temperature sensor short Intake temperature sensor signal failure Low battery voltageHFM sensor signal failureHFM sensor signal failure(Low)HFM sensor signal failure(High) Crankshaft position sensor signal failure (no engine revolution signal)Crankshaft position sensor signal failure(rpm > max. value)No.1 cylinder recognition failure Crankshaft position sensor signal failure (gab recognition failure)
Transmission coding failureCAN communication failure : ASR-
Transponder signal failure CAN communication failure : TCU(A/T only)CAN communication failure : TOD(E32 only)-- CAN communication failure : communication initialization failureFuel pump relay short(PWR)Fuel pump relay open/short(GND)Purge valve short
Fa
ilure
code Description
Purge valve open/short Condenser fan(HI) relay short(PWR)Condenser fan(HI) relay short(GND)No.1 knock sensor signal failureNo.2 knock sensor signal failure No.1 cylinder synchronization failure --Cluster S/W defectaveNo ignition voltage output(No.1 ignition coil) No ignition voltage output(No.2 ignition coil) No ignition voltage output(No.3 ignition coil)Crankshaft position sensor adaptation failureStart signal recognition failureNo.1 injector short(PWR) No.1 injector open/short(GND) No.2 injector short(PWR)No.2 injector open/short(GND)No.3 injector short(PWR)No.3 injector open/short(GND) No.4 injector short(PWR) No.4 injector open/short(GND)High oxygen sensor voltageLow oxygen sensor amplifying voltageOxygen sensor operating failure Not excessive lean indication in oxygen sensor(during coasting)Oxygen sensor heater short(PWR)Oxygen sensor heater open/short(GND)Low oxygen sensor voltage
SELF DIAGNOSIS FAILURE CODE

M162 ENGINE CONTROLS 1F1-9
234 235236237 238 239240241 242 243
No.5 injector open/short(GND) No.6 injector short(PWR)No.6 injector open/short(GND)
Variable intake air valve short(PWR)
Variable intake air valve open/short(GND) Cam actuator short(PWR)Cam actuator open/short(GND)A/C compressor relay short(PWR)A/C compressor relay open/short(GND) Over acceleration limit Over acceleration limit(CPU2)
193194195198 199 226227228229 232 233
Failure
code Description Failure
code Description
Control lever dual operation(CPU2) Control lever safety terminal failure(CPU2)Unusual pedal position variation(CPU2)Unusal throttle position variation(CPU2) Unusal throttle control data(CPU2) Unusal pedal position sensor(CPU2)Throttle potentiometer fault(CPU2)
Unusual CPU communication(CPU2)Unusual CPU configuration(CPU2) AD converter failure(CPU2)

M162 ENGINE CONTROLS 1F1-13
Failurecode ItemChecking method
Te s t
stepRequirementSpecified value Possible cause
6.1 
Ignition:ON 0.1 - 0.3A
Cable
 Fuel pump relay
 ECU



Fuel pump
relay: - Current consumption
00, 01, 02, 06,
7.0 


Coolant
temperature sensor:- Voltage 79 78
Ignition:ON °CV
20 3.57
80 1.22
100 0.78 
7.1
 ECU
± 5%

6.0 
Ignition:ON
(Fuel pump relay will operate for 1 - 2seconds when theignition switch isturned to "ON" afterstopping the engine)
 Engine:cranking
33 11

Cable
 Fuel pump relay



Fuel pump
relay:- Operation
34, 11 - 14V
(approx.1- 2sec.)
11 - 14V
(Cranking or driving)
53 3
7.1 
Ignition:OFF
(Remove the No.2 coupling from ECU)
79 78 
7.2
 Cable



Coolant
temperature sensor:- Resistance & cable °
C
20 2500 80 322
100 185
± 5%
7.2 


Coolant
temperature sensor:- Resistance Coolant temperature
sensor:
14 Remove the
connector from coolant temperaturesensor and measurethe resistancebetween No.1 andNo.2 pin withmultimeter. 
refer to
specifiedresistancevalue of 7.1 
Coolant
temperaturesensor
34, 35,

1F1-28 M162 ENGINE CONTROLS
AIR CONDITIONER CONTROL SYSTEM TEST
2.0 
Engine:In idling
 Air conditioner
switch : ON/OFF Air conditionerswitch : OFFAir conditionerswitch : ONCoolant temperature:above 105 °C
10 35
11 - 14 V 11 - 14 V
< 1 V



Condenser
fan(HI) control: Condenser fan
relay
 Fan motor
 ECU
Failure
code Item

1.0
Checking method
 Engine:In idling
 Air conditioner
switch : ON/OFF
Air conditioner switch : OFFAir conditionerswitch : ON
Te s t
stepRequirement
Specified value Possible cause
10 44 < 1 V



Air
conditioner signal:- Input signal (input signalfrom thermoamplifier)
44, 45,
11 - 14 V
5.1
 Cable
 Thermo amp
 Auto amp
 Dual pressure
switch
 Air conditioner
control panel
1.1 
Engine:In idling
 Air conditioner
switch : ON/OFFAir conditionerswitch : OFFAir conditionerswitch:ON
10 27
< 1 V



Air
conditionercompressor:- Output signal
11 - 14 V 
Thermo amp
 Auto amp
 Dual pressure
switch
 Air conditioner
control panel
 ECU

1F1-32 M162 ENGINE CONTROLS
Failurecode ItemChecking method
Test
stepRequirementSpecified
value Possible cause
1 liter of fuel supply formax. 35
seconds



Fuel pump:
- Fuel supply ratio 
Ignition:ON
- Disconnect the fuel return pipe and connect the host tobeaker to collect thesupplied fuel

1.0 
2.0
 Check the fuel line
5 - 9 A



Fuel pump:
- Current consumption 
Ignition:ON
- Remove the fuel relay from the fuseand relay box inluggagecompartment andconnect theamperemeterbetween No.1 andNo.3 in relaybox(fuel pump relay removed position) for measuringcurrent consumption

2.0 
Fuel pump
53 3
Multi tester(DC current)
31