check engine SSANGYONG MUSSO 1998 Workshop Repair Manual

M161 ENGINE CONTROLS 1F2-21
Failure
codeItem
Checking method Test
stepRequirement
Specified
valuePossible cause
Þ 5.1· ·· ·
· Crankshaft
position
sensor:
- Resistance· Ignition:OFF
- Disconnect the
coupling “No.2”
from ECU (engine
side coupling).· Cable
· Crankshaft position
sensor Þ 5.0
· Engine:in cranking
99 100Measure the
signal (refer to
figure 6)· ·· ·
· Crankshaft
position
sensor:
- Signal17,
18,
20,
67,· Increament failure
in driven plate
· Þ 5.1
> 5 V - 99 100
99 100
1050 - 1400W
Þ 6.0
· Engine:in cranking
104 106· Þ 6.1
· Cable
· Camshaft position
sensor Measure the
signal(refer to
figure 8)
· ·· ·
· Camshaft
position
sensor:
(E23 only)
- Signal
Þ 4.0· Ignition:ON
69 7111 -14 V· ·· ·
· Ignition
coil(T1/2)
- No.2,3
Cylinder65,· Cable
· Ignition coil(T1/2)
· Fuse No.17
· Engine:in cranking > 10 V
· Engine:idling
- Voltage
(alternating)
· Engine:in cranking
· Engine:idling> 2.5 V -
19,
58,
106 11The value will
be changed in
1.2 - 1.7 V. - Voltage
(alternating)
· Engine:in cranking
Þ 6.1
· Ignition:ON
- Remove the
connector from the
camshaft position
sensor 1311 -14 V· ·· ·
· Camshaft
position
sensor
(E23 only)
- Power supply· Cable
· OVPR
Camshaft position
sensor

1F2-22 M161 ENGINE CONTROLS
Failure
codeItem
Checking method Test
stepRequirement
Specified
valuePossible cause
0.9 - 1.6 W 72 11
72 71
· ·· ·
· Ignition
coil(T1/1)
- Primary coil
voltage
(No.1 , 4
cylinder)· Engine:in cranking
(starter operating)
- Measuring range:
400 V
- Time range: 100 %
(using engine tester)
· Ignition:OFF200 - 350 V
64,Þ 7.0· Þ 7.1
Þ 7.1
· ·· ·
· Connection
ignition coil
between T1/
1 and T1/2· Cable
· Ignition coil T1/1
· Ignition coil T1/2
71 11
· ·· ·
· Ignition
coil(T1/2)
- Primary coil
voltage
(No.2 , 3
cylinder)· Engine:in cranking
(starter operating)
- Measuring range:
400 V
- Time range: 100 %
(using engine tester)200 - 350 V 65,Þ 8.0· Þ 8.1
0.9 - 1.6 W
71 72
· Ignition:OFFÞ 8.1· ·· ·
· Connection
ignition coil
between T1/
1 and T1/2· Cable
· Ignition coil T1/1
· Ignition coil T1/2 The
resistance of
ignition coil at
20°C is
approached
0.6W. The
resistance of
ignition coil at
20°C is
approached
0.6W.
8 - 20 KV
· ·· ·
· Ignition coil
(T1/1, T1/2)
- Secondary
ignition
voltage· Engine:in cranking
- Select the ignition
coil in order of T1/1,
T1/2
- Measuring range :
20KV
- Time range : 100%Þ 9.0 64,
65,Engine tester· Þ 9.1
· Ignition plug
· ECU
· High tension cable

M161 ENGINE CONTROLS 1F2-23
Failure
codeItem
Checking method Test
stepRequirement
Specified
valuePossible cause
> 10 MW
11 7 11 8· Ignition:OFF
- Disconnect the
coupling "No.2"
from ECU.Þ 10.1· ·· ·
· Knock
sensor
- Resistance· Connecting
condition
· Cable
· ECU 6 - 8.5 KW
· ·· ·
· Ignition coil
(T1/1, T1/2)
- Secondary
coil
resistance· Remove the high
tension cable of
T1/1, T1/2 Þ 9.1Ignition coil
(T1/1, T1/2)· Ignition coil T1/1
· Ignition coil T1/2
TM.4a
TM.4b
56,

M161 ENGINE CONTROLS 1F2-25
IDLING CONTROL AND ELECTRONIC PEDAL SYSTEM TEST
Þ 2.1· Ignition:ON
50 512.25 - 2.75 V· ·· ·
· Pedal valve
sensor:
- Power
supply
(potentiometer 2)
· Cable
· ECU
Failure
codeItem
Þ 1.0
Checking method
· Ignition:ON
· Position of
accelerator pedal:
- Closed throttle
position
- Full throttle with
kick down
Test
stepRequirement
Specified
valuePossible cause
31 47
0.2 - 0.5 V
· ·· ·
· Pedal valve
sensor:
- Signal

(potentiometer 1)
160,
161,
164,
167,
4.3 - 4.8 V
· Þ 1.1
· Cable
· Pedal valve sensor
Þ 1.1
· Ignition:ON
31 324.75 - 5.25 V· ·· ·
· Pedal valve
sensor:
- Power
supply

(potentiometer 1)
· Cable
· ECU
Þ 2.0
· Ignition:ON
· Position of
accelerator pedal:
- Closed throttle
position
- Full throttle with
kick down 50 48
0.1 - 0.4 V
· ·· ·
· Pedal valve
sensor:
- Signal

(potentiometer 2)
162,
163,
164,
167,
2.1 - 2.5 V· Þ 2.1
· Cable
· Pedal valve sensor
Þ 3.0
· Engine:in idling
84 87
0.3 - 0.9 V· ·· ·
· Throttle
valve
actuator:
- Signal
Throttle valve
potentiometer
1104,
105,
108,
109,
116,
119,
185,
4.0 - 4.6 V· Þ 3.1
· Cable
· E-GAS actuator
· Position of
accelerator pedal:
- Closed throttle
position
- Full throttle with
kick down

1F2-26 M161 ENGINE CONTROLS
Failure
codeItem
Checking method Test
stepRequirementSpecified
valuePossible cause
Þ 3.1· Ignition:ON
84 1124.75 - 5.25 V· ·· ·
· Throttle
valve
actuator:
- Power
supply· Cable
· ECU
Þ 4.0
· Ignition:ON
68 670.8 - 2.3 V
The value will
be changed in
1.0 - 2.5V.· ·· ·
· Throttle
valve
actuator:
- Signal
Throttle valve
actuator
motor
voltage
supply104,
105,
108,
109,
116,
119,
185,· ECU
· Cable
· E-GAS actuator
· Engine:in idling
- Coolant
temperature:
> 70 °C 84 85
4.0 - 4.6 V

Throttle valve
potentiometer
2
0.3 - 0.9 V
· Position of
accelerator pedal:
- Closed throttle
position
- Full throttle with
kick down
Throttle
valve
potentiometer
1+2
· Ignition:OFF
< 10 W
Throttle valve
actuator
motor
resistance68 67

M161 ENGINE CONTROLS 1F2-27
AIR CONDITIONER CONTROL SYSTEM TEST
Þ 2.0· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON
Coolant temperature:
above 150 °C 10 35
11 - 14 V
11 - 14 V
< 1 V
· ·· ·
· Condenser
fan(HI)
control:
Failure
codeItem
Þ 1.0
Checking method
· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON
Te s t
stepRequirement
Specified
value
10 44
< 1 V
· ·· ·
· Air
conditioner
signal:
- Input signal
(input signal
from thermo
amplifier)44,
45,
11 - 14 V· Þ 5.1
· Cable
· Thermo amp
· Auto amp
· Dual pressure
switch
· Air conditioner
control panel
Þ 1.1
· Engine:In idling
· Air conditioner
switch:ON/OFF
Air conditioner
switch:OFF
Air conditioner
switch:ON 10 27
< 1 V
· ·· ·
· Air
conditioner
compressor:
- Output
signal
11 - 14 V

M161 ENGINE CONTROLS 1F2-29
Failure
codeItemChecking method Te s t
stepRequirementSpecified
valuePossible cause
3.2 - 3.6 bar· ·· ·
· Fuel
pressure:in
idling speed
- When the
vacuum is
applied· Engine:in idling
- Colse the valve
screw on pressure
testerÞ 1.0 Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).· Þ Fuel pump test
· Fuel pressure
regulator
3.7 - 4.2 bar
· ·· ·
· Fuel
pressure:in
idling speed
- When the
vacuum is
not applied· Engine:in idling
- Colse the valve
screw on pressure
tester Þ 2.0 Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).· Þ Fuel pump test
· Fuel pressure
regulator
> 3.0 bar
· ·· ·
· Fuel system
internal
leakage:· Engine:stop Þ 3.0 Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).· The pressure drops
rapidly:non-return
valve in fuel pump
> 2.5 bar· After 30 minutes
from engine stop· The pressure
drops slowly:
- Injector test
- Fuel pressure
regulator
- O-ring

M161 ENGINE CONTROLS 1F2-31
Failure
codeItemChecking method Test
stepRequirementSpecified
valuePossible cause
1 liter of fuel
supply for
max. 35
seconds· ·· ·
· Fuel pump:
- Fuel supply
ratio· Ignition:ON
- Disconnect the fuel
return pipe and
connect the host to
beaker to collect
the supplied fuel Þ 1.0· Þ 2.0
· Fuel line
5 - 9 A
· ·· ·
· Fuel pump:
- Current
consumption· Ignition:ON
- Remove the fuel
relay from the fuse
and relay box in
luggage
compartment and
connect the
amperemeter
between No.1 and
No.3 in relay
box(fuel pump relay
removed position)
for measuring
current
consumption Þ 2.0· Fuel pump
533
Multi tester(DC current)
31

M161 ENGINE CONTROLS 1F2-33
Figure 8. Shop Made Cable Figure 9. Fuel Injector Normal Spary Pattern
Failure
codeItemChecking method Test
stepRequirementSpecified
valuePossible cause
There should
be no leaks
and later
drops from
the injector· ·· ·
· Injector:
- Leakage
test· Ignition:ON
- Remove the fuel
distributor and fuel
injector with a unit. Þ 1.0· Þ 2.0
· Injector
The spray
pattern of the
injector most
show in the
figure 10
· Ignition:ON
- Connect the shop
made cable to the
injector.
- Collect the
spraying fuel with a
beaker
- Connect the shop
made cable to
No.11(+) and No.5
(-) terminal in test
box. Þ 2.0· Injector
533
· ·· ·
· Injector:
- Function
test and
spray
pattern
check
533

1F2-46 M161 ENGINE CONTROLS
3. Disconnect the vacuum hose.
4. Disconnect the circlip and remove the fuel pressure
regulator.
5. Apply the oil to O-ring lightly and then replace it.
6. Installation should follow the removal procedure in the
reverse order.
7. Check for fuel pressure and internal leaks by operating the
engine. 2. Discharge the pressure in fuel supply system by pressing
the service valve.
Removal & Installation Procedure
1. Remove the fuel pressure test connector.