engine coolant SSANGYONG MUSSO 1998 Workshop Repair Manual

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

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

1F2-38 M161 ENGINE CONTROLS
Engine Connector
Pin No.Abbreviation
Description
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80-
-
EV1
EV4
EV2
EV3
M+
M-
TM.31
-
ZSB23
ZSA14
NWS
EGR
-
SLP
-
MT
GND
LT -
-
Injector-cylinder 1
Injector-cylinder 2
Injector-cylinder 3
Injector-cylinder 4
E-GAS motor plus
E-GAS motor minus
Power ground TM.31
-
Ignition coil cylinder 2+3
Ignition coil cylinder 1+4
Camshaft control
EGR (Exhaust Gas Recirculation)
-
Second air pump relay
-
Engine coolant temperature
Intake air temperature ground
Intake air temperature

1F2-42 M161 ENGINE CONTROLS
Pin No.
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
Abbreviation Description
-
-
Injector-cylinder 1
Injector-cylinder 2
Injector-cylinder 3
Injector-cylinder 4
E-GAS motor plus
E-GAS motor minus
Power ground TM.31
-
Ignition coil cylinder 2+3
Ignition coil cylinder 1+4
Camshaft control
-
Second air pump relay
-
Engine coolant temperature
Temperature ground
Intake air temperature
Hot film air mass signal
-
-
E-GAS potentiometer ground
E-GAS potentiometer 2 signal
-
E-GAS potentiometer 1 signal
-
-
-
-
-
EV1
EV4
EV2
EV3
M+
M-
TM.31
-
ZSB23
ZSA14
NWS
-
-
SLP
-
MT
GND
LT
HFM
-
-
-
IP2S
-
IP1S
-
-
--
-
l
l
l
l
l
l
l
-
l
l
l
-
-
¡
-
l
l
l
l
-
-
l
l
-
l
-
-
-
-
-
l
l
l
l
l
l
l
-
l
l
l
-
-
¡
-
l
l
l
l
-
-
l
l
-
l
-
-
-
E23 ENG,
4speed A/T E23 ENG,
5speed A/T

1F2-62 M161 ENGINE CONTROLS
PURGE SWITCHOVER VALVE
1 Purge Control valve
2 Line to engine
3 Line to canister
4 Canister
Functions
The fuel vaporization control system is installed to inhibit the
fuel vaporized gas from discharging into the atmosphere. The
fuel vaporized gas that is accumulated in the canister abstracts
through the purge switchover valve purification during the
engine combustion (except the decreasing mode) and coolant
temperature of over 80°C. For this reason, the ECU transacts
the engine speed, air inflow quantity, coolant temperature, and
intake temperature.
The purge switchover valve is activated by the ECU frequency
according with the engine rotating speed to adjust the
purification rate. The purification rate is determined by the
continuous valve opening interval.
The purge switchover valve is activated by the ECU for the
following conditions :
lCoolant temperature of over 80°C
lEngine speed of over 1000rpm
l2 Minutes after starting
lWhen the fuel cut-off mode is not activated

1F2-72 M161 ENGINE CONTROLS
If the measured value is not within the specified value, the
possible cause may be in cable or HFM sensor in itself.
Perform the 5V power supply inspection procedures.
HFM Sensor 5V Power Supply Inspection
1. Measure the voltage between the HFM sensor No.108(+) and
No.105(-) after removing the HFM sensor connector.
HFM Sensor Input Voltage Inspection
1. Measure the HFM sensor signal voltage between the ECU
terminal No.81 and No.105.
Specified Value (coolant temperature is over 70°C)
If the measured value is not within the specified value, the
possible cause may be in cable or ECU coupling.
Iginition"ON” 0.9 - 1.1 V
Engine at idle 1.3 - 1.7 V
Specified Value 4.7 - 5.2 V
2. Measure the voltage between the HFM sensor wining
connector terminal No.3 pin and No.102(+) after removing
the HFM sensor connector.
Specified Value
If the measured value is not within the specified value, the
possible cause may be in cable or over voltage protection
relay.
Perfrom the 12V power supple inspection procedures.
Specified Value 4.7 - 5.2 V
HFM Sensor 12V Power Supply Inspection
1. Measure the voltage between the HFM sensor wining
connector 1G No.2 pin(+) and No.3 after removing the HFM
sensor connector.
If the measured value is not within the specified value, the
possible cause may be in cable or over voltage protection
relay.
Specified Value 11 - 14 V

1F2-74 M161 ENGINE CONTROLS
Oxygen Sensor Signal Voltage Inspection
1. Measure the oxygen sensor signal voltage between the ECU
terminal No.11 and No.9. Maintain the engine speed ia at
idle while the coolant temperature is over 80°C.
If the measured value is not within the specified value, the
possible cause may be in cable, oxygen sensor or ECU.
Oxygen Sensor Heating Voltage Inspection
1. Measure the oxygen sensor heating voltage between the
ECU terminal No.11 and No.9. Maintain the engine speed ia
at idle while the coolant temperature is over 80°C.
If the measured value is not within the specified value, the
possible cause may be in cable, oxygen sensor or ECU.
Oxygen Sensor Heating Current Consumption
Inspection
1. Measure the oxygen sensor heating current consumption
between the ECU terminal No.9 and sensor heating(+) line
while the ignition switch is in "ON" position.
If the measured value is not within the specified value, the
possible cause may be in cable, oxygen sensor or ECU.
Specified Value 0.2 - 2.0 A
Specified Value -0.2 - 1.0 V
Specified Value 11 - 14

1F2-76 M161 ENGINE CONTROLS
COOLANT TEMPERATURE SENSOR
1 Artificial Resin Housing
2 Metal Housing
3 NTC (negative temperature coefficient) Resistor
Removal & Installation Procedure
1. Remove the pressure by opening the pressure cap in the
coolant subtank.
2. Disconnect the connector and remove the coolant
temperature sensor.
Installation Notice
Replace the seals with new one.
3. Installation should follow the removal procedure in the
reverse order.
4. Check for leaks at each connections after starting the engine.4 Connector
5 Coolant Temperature Sensor
Tightening Torque 18 - 22 Nm