1998 SSANGYONG MUSSO fuel pump

1F1-58 M162 ENGINE CONTROLS
FUEL PUMP
Requirements for Fuel Pump
ItemSpecified ValueItemSpecified Value
System Pressure
3.8 bar
Minimum Delivery at 8V 30 Litre/Hr
Maximum Pressure
8.5 bar (12 V)
Minimum Amount
of Fuel Supply
114 Liter/Hr (12 V, 3.8 bar, -
30 ~ +70°C)
Minimum Pressure5.0 bar (12 V)
Maximum Allowable Current 7.5 A
Nominal Voltage
12 V
Ambient Temperature
-30 ~ +70°C
1 Reservoir Tank
2 Fuel Sensor (float/arm)
3 Resistance
4 Wiring Connector
5 Fuel Supply Pipe
7 Float
10 Flange and Harness Assembly
11 Fuel Pump
12 Spring
13 Thermister Housing
14 Thermister
15 Resistor Card and Wiper
16 Float Arm
Operating Voltage 8 V
Maximum Amount
of Fuel Supply165 Liter/Hr (12V, 3.8 bar,
-30 ~ +70°C)

M162 ENGINE CONTROLS 1F1-59
1
2
3
4
1 Fuel Pump Connector Wiring
2 Fuel Return Pipe
3 Fuel Supply Pipe
4 Bolts5 Fuel Return Pipe
6 Fuel Supply Pipe
7 Float
8 Ground Stud (Sender "-")
COLOR
Pump "+"
Thermister "+"
Ground
Sender Unit "+"USE Harness Location & Connector
A
B
C
D
2.0 BR
0.5 W
2.0 B
0.5 RY

1F1-60 M162 ENGINE CONTROLS
Tools Required
661 589 00 46 00 Cap Remover
Removal & Installation Procedure
1. Disconnect the negative battery cable.
2. Disconnect the harness connector (1).
3. Disconnect the fuel supply (6) and return (5) pipes.
4. Using a special tool, Unscrew the eight fuel retaining bolts
and remove the pump from fuel tank.
Notice
Check the condition of the seal and replace if necessary.
Drain the fuel before removing the pump.

M162 ENGINE CONTROLS 1F1-61
Notice
Replace the fuel pump relay if the measured value is over
9A. Notice
Check the fuel filter and fuel line when the fuel delivery is
not within specified value.
Measure the Current Consumption of Fuel Pump
1. Remove the fuel pump relay from fuse and relay box in
trunk, and turn the ignition switch to "ON" position.
2. Using a multi-tester, measure the current consumption by
connecting the terminal No.1 and No.3 of pump.
Measure the Fuel Delivery From the Fuel Pump
1. Disconnect the return pipe from fuel distributor and insert
the appropriate hose into it.
2 . Place the hose end into the beaker with the minimum capacity
of 1Liter.
3. Turn the ignition switch to "ON" position.
4. Connect the terminal No.33 and No.5 of ECU with a service
wire.
5. Measure the fuel delivery from the fuel pump.
1Liter/max.35sec. Specifed Value
5 - 9A Specifed Value

SECTION 1F2
M161 ENGINE CONTROLS
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.
Specifications . . . . . . . . . . . . . . . . . . . . . . . 1F2-2
Fastener Tightening Specifications . . . . . . . . 1F2-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . 1F2-3
Special Tools Table . . . . . . . . . . . . . . . . . . . . 1F2-3
Schematic and Routing Diagrams . . . . . . . 1F2-4
E23 ECU (MSE) . . . . . . . . . . . . . . . . . . . . . . 1F2-4
E23 ECU (HFM) . . . . . . . . . . . . . . . . . . . . . . 1F2-5
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-6
Self Diagnosis Socket Pin Numbers and
Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 1F2-6
Self Diagnosis Failure Code (for E23 ENG) . 1F2-7
Test Box Connection . . . . . . . . . . . . . . . . . . 1F2-10
Fuel Injection System Test . . . . . . . . . . . . . 1F2-11
Ignition System Test . . . . . . . . . . . . . . . . . . 1F2-20
Idling Control and Electronic Pedal
System Test . . . . . . . . . . . . . . . . . . . . . . . 1F2-25
Air Conditioner Control System Test . . . . . . 1F2-27
Fuel Pressure and Internal Leakage Test . . 1F2-28
Fuel Pump Test . . . . . . . . . . . . . . . . . . . . . . 1F2-30Injector Test . . . . . . . . . . . . . . . . . . . . . . . . 1F2-32
Maintenance and Repair . . . . . . . . . . . . . 1F2-34
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 1F2-34
ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-34
Fuel Pressure Regulator . . . . . . . . . . . . . . 1F2-45
Fuel Distributor . . . . . . . . . . . . . . . . . . . . . . 1F2-49
Injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-54
Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-57
Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . 1F2-58
Purge Switchover Valve . . . . . . . . . . . . . . . 1F2-62
Vacuum System . . . . . . . . . . . . . . . . . . . . . 1F2-64
Crankshaft Position Sensor . . . . . . . . . . . . 1F2-66
Camshaft Position Sensor . . . . . . . . . . . . . 1F2-68
Hot Film Air Mass (HFM) Sensor . . . . . . . . . 1F2-70
Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . 1F2-73
Knock Sensor . . . . . . . . . . . . . . . . . . . . . . . 1F2-75
Coolant Temperature Sensor . . . . . . . . . . . 1F2-76
Accelerator Pedal Module . . . . . . . . . . . . . . 1F2-79

M161 ENGINE CONTROLS 1F2-7
No ignition voltage output(NO.1 ignition coil;
1, 4cylinder)
No ignition voltage output(NO.2 ignition coil;
2, 3cylinder)
Cranshaft position sensor adaption failure
Start signal recognition failure
No.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 voltage
Low oxygen sensor amplifying voltage
Oxygen sensor operating failure
Not excessive lean indication in oxygen
sensor(during coasting)
Oxygen sensor heater short(power)
Oxygen sensor heater open/short(GND)
Low oxygen sensor voltage
Short learning control failure
Lambda control failure (rich stop)
Lambda control failure (lean stop)
Lambda idle adaptation failure(above rich
threshold)
Lambda idle adaptation failure(below lean
threshold)
learning control failure(rich, low load) Coolant temperature sensor open
Coolant temperature sensor short
Coolant temperature sensor signal failure
Intake temperature sensor open
Intake temperature sensor short
Intake temperature sensor signal failure
Low battery voltage
HFM sensor signal failure
HFM 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 failure
Transponder signal communication failure
CAN communication failure : TCU(A/T only)
CAN communication failure :
communication initialization failure
Fuel pump relay short(PWR)
Fuel pump relay open/short(GND)
Purge valve short
Purge valve open/short
Condenser fan(HI) relay short(PWR)
Condenser fan(HI) relay short(GND)
No.1 knock sensor signal failure
No.1 cylinder synchronization failure 00
01
02
03
04
05
08
09
10
11
17
18
19
20
21
25
26
31
34
35
40
41
44
45
56
58
Failure
codeDescriptionFailure
codeDescription
64
65
67
71
72
73
74
75
76
77
78
79
80
81
82
83
86
87
89
93
96
97
98
99
100
SELF DIAGNOSIS FAILURE CODE (FOR E23 ENG)

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

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