check engine SSANGYONG MUSSO 1998 Workshop Repair Manual

1F2-8 M161 ENGINE CONTROLS
Servo motor open/short
Unprogramed ECU with Immobilizer
Uncoded ECU
ECU failure(NVRAM checksum failure)
ECU failure(coding ID checksum failure)
ECU failure(coding checksum failure)
ECU failure(programing checkusm failure)
ABD input signal short(power)
ABD input signal short(GND)
Low pedal valve sensor SP1 voltage
High pedal valve sensor SP1 voltage
Low pedal valve sensor SP2 voltage
High pedal valve sensor SP2 voltage
Different pedal valve sensor signal(1,2) SP1
with SP2
Pedal valve sensor 1,2 failure
HFM sensor, and throttle position sensor failure
ECU failure(incompatible CPU)
ECU failure(CPUs communication failure)
ECU failure(CPU(2) configuration failure)
ECU failure(CPU(2) fault)
ECU failure(CPU run time failure between
CPUs)
-
-
-
-
-
-
Cam actuator short(PWR) 101
102
103
104
105
108
109
11 0
11 6
11 7
11 9
120
121
122
123
125
126
127
129
130
131
132
133
134
136
137
139140
141
142
143
144
145
146
150
151
160
161
162
163
164
167
185
186
187
188
189
190
192
193
194
195
198
199
226 learning control failure(lean, low load)
learning control failure(rich, high load)
learning control failure(lean, high load)
Low throttle position sensor(IP1) voltage
High throttle position sensor(IP1) voltage
Low throttle position sensor(IP2) voltage
High throttle position sensor(IP2) voltage
Throttle actuator learning data fault
Throttle actuator learning control failure
Exceed fuel-cut safety time
Throttle valve return spring failure
Cruise control interruption memory failure
Throttle actuator failure
Pedal module position sensor signal failure
Defferent HFM signal with throttle potentiom-
eter
Both throttle potentiomenter(IP1 & IP2)
failure
Different IPS1 with IPS2
High permanent throttle signal deviation
Message counter fault ® cruise control “OFF”
Vehicle speed signal failure
Vehicle speed signal failure
Cruise control lever failure
Cruise control acceleration failure
Cruise control deceleration failure
ECU failure(RAM)
ECU failure(EPROM)
Servo motor control output inter-ruption
memory failure
Failure
codeDescriptionFailure
codeDescription

M161 ENGINE CONTROLS 1F2-11
FUEL INJECTION SYSTEM TEST
Failure
codeItem
Þ 1.0
Checking method
· Ignition:ON
Test
stepRequirementSpecified
valuePossible cause
10 1211 -14V
· ·· ·
· ECU:power
supply
- terminal 30
(TM.30)
Þ 2.2· ·· ·
· Power
supply:
- terminal 87
(TM.87)· Ignition:ON· Power supply cable
· OVPR 08,
·Þ 1.1
·Þ 1.2
Þ 1.1
· Ignition:ON
10 211 -14V· ·· ·
· Ground
cable:
- Battery
ground· Ground cable
· Ground conditionDiagnosis
socket
69 2
Diagnosis
socket
Þ 1.2· Ignition:ON
11211 -14V· ·· ·
· Power
supply:
- terminal 30
(TM.30)· Power supply cable
Diagnosis
socket
Þ 2.0· Ignition:ON
51111 -14V· ·· ·
· ECU:power
supply
- terminal 87
(TM.87)08,·Þ 1.1
·Þ 2.1
Þ 2.1
· Ignition:ON 11 -14V· ·· ·
· Ground
cable
- Electronic
ground· Ground cable
52
Diagnosis
socket
111
Diagnosis
socket· Ignition:OFF
11 -14V
< 1V
Þ 3.0
· Engine:in Cranking
52· Cable
· Ignition Swith 11 -14
(during engine
cranking)
· ·· ·
· Start signal:
- terminal 50
(TM.50)

1F2-12 M161 ENGINE CONTROLS
Failure
codeItem
09,
10,
11,
Checking method Te s t
stepRequirementSpecified
valuePossible cause
Þ 4.0· ·· ·
· HFM sensor
signal
105 81· Ignition:ON0.9 - 1.1V· Þ 4.1 - 4.3
· Cable
· External air inflow
· HFM sensor
· Engine:in Idle
(Coolant temperature
: > 70°C )1.3 - 1.7V
Þ 4.1
105 4
· Ignition:ON
· HFM sensor
connector removed4.7 - 5.2V
· Cable
· ECU coupling
· ·· ·
· HFM sensor:
- 5V power
supplyHFM
sensor
Þ 4.2
3 108· Ignition:ON
· HFM sensor
connector removed4.7 - 5.2V
· Þ 4.3
· Cable
· ·· ·
· HFM sensor:
- 5V power
supplyHFM
sensor
Þ 4.3
104 2· Ignition:ON
· HFM sensor
connector removed11 - 14V
· Cable
· OVPR
· ·· ·
· HFM sensor:
- 12V power
supplyHFM
sensor
03,
04,
05,Þ 5.0· ·· ·
· Intake air
temperature
sensor:
- Voltage105 80· Ignition:ON· Þ 5.1
· ECU
Þ 5.1· Ignition:OFF
· No.2 ECU coupling
removed 105 80
· Cable
· HFM sensor
· ·· ·
· Intake air
temperature
sensor:
- Resistance
: voltage value
is increased
when engine
rpm is
increased
± 5%
°C
10
20
30
40
50
60
± 5%W
3600
2420
1662
1166
853
600 °C
10
20
30
40
50
60V
3.1
2.65
2.18
1.76
1.4
1.1

M161 ENGINE CONTROLS 1F2-13
Failure
codeItemChecking method Te s t
stepRequirement
Specified
valuePossible cause
Þ 6.1· Ignition:ON0.1 - 0.3A· Cable
· Fuel pump relay
· ECU
· ·· ·
· Fuel pump
relay:
- Current
consumption
00,
01,
02,
06,Þ 7.0· ·· ·
· Coolant
temperature
sensor:
- Voltage79 78· Ignition:ON°CV
20 3.57
80 1.22
100 0.78· Þ 7.1
· ECU
± 5% Þ 6.0
· Ignition:ON
(Fuel pump relay will
operate for 1 - 2
seconds when the
ignition switch is
turned to "ON" after
stopping the
engine)
· Engine:cranking 33 11
· Cable
· Fuel pump relay
· ECU
· ·· ·
· Fuel pump
relay:
- Operation34,
35,11 - 14V
(approx.1-
2sec.)
11 - 14V
(Cranking or
driving)
533
Þ 7.1· Ignition:OFF
(Remove the No.2
coupling from ECU) 79 78· Þ 7.2
· cable
· ·· ·
· Coolant
temperature
sensor:
- Resistance
& cable°CW
20 2500
80 322
100 185
± 5%
Þ 7.2· ·· ·
· Coolant
temperature
sensor:
- ResistanceCoolant temperature
sensor:
14
· Remove the
connector from
coolant temperature
sensor and measure
the resistance
between No.1 and
No.2 pin with
multimeter.· Þ refer to
specified
resistance
value of 7.1.· Coolant
temperature
sensor

1F2-14 M161 ENGINE CONTROLS
Failure
codeItemChecking method Test
stepRequirementSpecified
valuePossible cause
Þ 9.0· Keep the engine run
above 2 minutes in
over 80°C of coolant
temperature6.0 - 7.0 V· ECU
· Cable
· Oxygen sensor
· ·· ·
· Oxygen
sensor:
- Signal80,
81,
82,
83,
89,560
Þ 8.0· Engine:in cranking
or idle
560· Cable
· ECU
· ·· ·
· ECU:
- RPM signal
output32,
33,refer to figure
2
Þ 10.0· Keep the engine run
above 2 minutes in
over 80°C of coolant
temperature.· ·· ·
· Oxygen
sensor:
- Heating
function
operated
Þ 11.0· ·· ·
· No.1
cylinder
injector:
- Operating &
injection
time· When the coolant
temperature is
approx. 20°C:
- Engine:in cranking8.0 ms· Cable
· ECU
· No.1 Injector
· Coolant
temperature sensor
· Oxygen sensor
· Intake air
temperature sensor
- Voltage· Engine:in cranking
or idle
(above 5V in idling)
16 17
59
911
· Ignition:ON11 - 14 V
· ECU
· Cable
· Oxygen sensor
- Current
consumption0.2 - 2.0 A
72,
73,
63 11
· When the coolant
temperature is
approx. 80°C:
- Engine:at idling
speed
- Engine:at sharp
acceleration(full
throttle)
(refer to figure 3
and 4)approx.
2.7 - 5.0ms
approx.14ms There will be a
voltage
fluctuation in
the range of
- 0.2 -1.0V.
85,
86,
87,

M161 ENGINE CONTROLS 1F2-15
Failure
codeItem
Checking method Test
stepRequirementSpecified
valuePossible cause
·Ignition:OFF (injector
temperature is 20°C)14 - 17 W - Internal
resistance
(No.1
injector)63 11
Þ 12.0· ·· ·
· No.2
cylinder
injector:
- Operating &
injection
time· When the coolant
temperature is
approx. 20°C:
- Engine:in cranking
8.0 ms· Cable
· ECU
· No.2 Injector
· Coolant
temperature
sensor
· Oxygen sensor
· Intake air
temperature
sensor 74,
75,
64 11
· When the coolant
temperature is
approx. 80°C:
- Engine:at idling
speed
- Engine:at sharp
acceleration (full
throttle)
(refer to figure 3 and
4)approx.
2.7 - 5.0ms
approx.14ms
·Ignition:OFF (injector
temperature is 20°C)14 - 17 W - Internal
resistance
(No.2
injector)64 11
Þ 13.0· ·· ·
· No.3
cylinder
injector:
- Operating &
injection
time· When the coolant
temperature is
approx. 20°C:
- Engine:in cranking
8.0 ms· Cable
· ECU
· No.3 Injector
· Coolant
temperature sensor
· Oxygen sensor
· Intake air
temperature sensor 76,
77,
65 11
· When the coolant
temperature is
approx. 80°C:
- Engine:at idling
speed
- Engine:at sharp
acceleration(full
throttle)
(refer to figure 3
and 4)approx.
2.7 - 5.0ms
approx.14ms

1F2-16 M161 ENGINE CONTROLS
Failure
codeItem
Checking method Test
stepRequirement
Specified
valuePossible cause
·Ignition:OFF (injector
temperature is 20°C)14 - 17 W - Internal
resistance
(No.3
injector)65 11
Þ 14.0· ·· ·
· No.4 cylinder
injector:
- Operating &
injection time· When the coolant
temperature is
approx.20°C:
- Engine:in cranking8.0 ms· Cable
· ECU
· No.4 Injector
· Coolant
temperature sensor
· Oxygen sensor
· Intake air
temperature sensor 78,
79,
66 11
· When the coolant
temperature is
approx.80°C:
- Engine:at idling
speed
- Engine:at sharp
acceleration(full
throttle)
(refer to figure 3
and 4)approx.
2.7 - 5.0ms
approx.14ms
·Ignition:OFF
(injector temperature
is 20°C)14 - 17 W - Internal
resistance
(No.4
injector)66 11
226,
227,Þ 15.0· ·· ·
· Camshaft
actuator:
Current
consumption
12
Camshaft actuator1 - 1.5 A· ECU
· Þ 15.1
· Þ 16.0 ·
Engine : using a test
cable(102 589 63 00)
in idling, measure the
current consumption
with below condition
- Coolant temperature
: above 70°C
- Engine rpm :
increase up to 2000
rpm

M161 ENGINE CONTROLS 1F2-17
Failure
codeItem
Þ 15.1
Checking method Test
stepRequirement
Specified
valuePossible cause
73 28 - 12 W
· ·· ·
· Camshaft
actuator:
Solenoid
resistance
(E23 only)
Þ 18.0· ·· ·
· Purge
control
valve:
- Vacuum
control· Engine:in idling/
normal operating
temperature· Power supply cable
· OVPR
· Cable
· Camshaft actuatorDiagnosis
socket
Þ 16.0
73 69Engine is
unstable or
stopped.· ·· ·
· Camshaft
actuator:
Mechanical
actuation
(E23 only)· Mechanical failure
of camshaft
actuator
Þ 17.0
· Engine:in idling
34 11The purge
control valve
should be
operated after
approx.
1minute.
(refer to figure
5)· ·· ·
· Purge
control
valve:
- Operating
226,
227,
· ECU
· Cable
· Purge control valve
· Ignition:ON0.2 - 0.4 A - Current
consumption
10 34
Creating above
50mbar of
vacuum after
approx.
1 minute
Þ 19.0
· Ignition:OFF
38 37· Data bus
· Þ 19.1
· Þ 19.2 55 - 65 W
· ·· ·
· CAN data
bus
· Ignition:OFF
· Engine:in idling
40,
41,
54,
40,
41,
54,Connect the vacuum
gauge between the
control valve and
canister
22,23,
24,26,
27,29,
30,31,
59,60,

1F2-18 M161 ENGINE CONTROLS
Failure
codeItem
Þ 19.1
Checking method Test
stepRequirementSpecified
valuePossible cause
38 37115 - 125 W
· ·· ·
· CAN module
resistance in
ABS, ABD,
ASR control
unit· Cable
· ABS, ABD, ASR
control unit
· Ignition:OFF
- disconnect the
coupling"No.1"
from ECU
Þ 19.2
38 37115 - 125 W
· ·· ·
· CAN module
resistance in
ECU control
unit· ECU· Ignition:OFF
- disconnect the
coupling"No.1"
from ECU
Þ 20.0
55811 - 14 V· ·· ·
· Diagnosis
cable
operating· ECU
· Cable
· Ignition:ON

1F2-20 M161 ENGINE CONTROLS
Failure
codeItem
Þ 1.0
Checking method
· Ignition:ON
Test
stepRequirementSpecified
valuePossible cause
10 1211 - 14V
· ·· ·
· ECU:power
supply
- terminal 30
(TM.30)
Þ 2.2· ·· ·
· Power
supply:
- terminal 87
(TM.87)· Ignition:ON· Power supply cable
· OVPR
IGNITION SYSTEM TEST
08,· Þ 1.1
· Þ 1.2
Þ 1.1
· Ignition:ON
10 211 - 14V· ·· ·
· Ground
cable:
- Battery
ground· Ground cable
· Ground condition
(figure 1)Diagnosis
socket
69 2
Diagnosis
socket
Þ 1.2· Ignition:ON
11211 - 14V· ·· ·
· Power
supply:
- terminal 30
(TM.30)· Power supply cable
Diagnosis
socket
Þ 2.0· Ignition:ON
51111 -14V· ·· ·
· ECU:power
supply
- terminal 87
(TM.87)08,· Þ 2.1
· Þ 2.2
Þ 2.1
· Ignition:ON 11 - 14V· ·· ·
· Ground
cable
- Electronic
ground· Ground cable
52
Diagnosis
socket
111
Diagnosis
socket
· Ignition:OFF
11 - 14V
< 1V
Þ 3.0· Ignition:ON
69 7211 - 14 V· ·· ·
· Ignition
coil(T1/1)
- No.1,4
Cylinder64,· Cable
· Ignition coil(T1/1)
· Fuse No.17
· Engine:in cranking > 10 V