2003 SSANGYONG MUSSO electric

FrontRear
Front Rear
SECTION 4F
ANTILOCK BRAKE SYSTEM
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 thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
SPECIFICATIONS
GENERAL SPECIFICATIONS
Application Model
ECUNumber of Pins
Operating TemperatureMotor Operating CurrentSolenoid Coil Resistance External Resistance Air Gap
Number of teeth Description
ABS 5.3 31
-40 ~ +120 °C
Below MAX 40A
1.28K - 1.92K
0.35 - 1.60 mm 0.15 - 1.20 mm 52 52 ABS/ABD 5.3
83
-40 ~ +85 °C
Below MAX 45A
8.04 - 9.04 except AV,
HSV 4.04 - 4.54
1.28K - 1.92K
0.35 - 1.60 mm 0.15 - 1.20 mm
52 52
Hydraulic System
Wheel Speed Sensor Impulse Ring
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 4F-1
General Specifications . . . . . . . . . . . . . . . . . . 4F-1
Schematic and Routing Diagrams . . . . . . . . 4F-2 ABS 5.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-2
ABS/ABD 5.0 . . . . . . . . . . . . . . . . . . . . . . . . . 4F-3
ABS 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-4
ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . 4F-5
Component Locator . . . . . . . . . . . . . . . . . . . 4F-6 ABS, ABS/ABD . . . . . . . . . . . . . . . . . . . . . . . . 4F-6
ABD System Description . . . . . . . . . . . . . . . 4F-7 Self Diagnosis . . . . . . . . . . . . . . . . . . . . . . . 4F-9
ABS, ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . 4F-9
ABS, ABS/ABD 5.0 . . . . . . . . . . . . . . . . . . . . 4F-11
Defect Codes . . . . . . . . . . . . . . . . . . . . . . . . 4F-13
Maintenance and Repair . . . . . . . . . . . . . . 4F-19
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . 4F-19
Wheel Speed Sensor . . . . . . . . . . . . . . . . . . 4F-19
Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . 4F-21 ABS 5.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4F-21
ABS/ABD 5.3 . . . . . . . . . . . . . . . . . . . . . . . . 4F-24

SECTION 4G
PARKING BRAKE
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 4G-1General Specifications . . . . . . . . . . . . . . . . . . 4G-1
Fastener Tightening Specifications . . . . . . . . . 4G-1
Component Locator . . . . . . . . . . . . . . . . . . . 4G-2 TABLE OF CONTENTS
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 4G-2
Maintenance and Repair . . . . . . . . . . . . . . . 4G-3
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 4G-3 Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 4G-3
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 thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
SPECIFICATIONS
GENERAL SPECIFICATIONS
Application
Parking Brake Lever Bolt Cable Mounting Bracket Bolt
N 

 m
8 - 18 8 - 18
FASTENER TIGHTENING SPECIFICATIONS
Application
Type
Operating Type
Description
Mechanically Operated Rear Wheel Expansion Manual

5A-24 AUTOMATIC TRANSMISSION
Transmission Control Unit(TCU)
The TCU is an in-vehicle micro-processor based transmission management system. It is usually mounted in the
vehicle cabin, under the instrument panel, under the seat, behind the side kick panels or under the floor in the
footwell on the passenger side. Different control units are supplied for different vehicle applications.The TCU contains:
Processing logic circuits which include a central microcontroller and a back-up memory system.
Input circuits.
Output circuits which control external devices such as the variable pressure solenoid (VPS), on/off solenoid
drivers, a diagnostics output and the driving mode indicator light.
The various items which make up the TCU are discussed below.
Processing Logic
Shift schedule and calibration information is stored in an erasable programmable read only memory (EEPROM).
Throttle input calibration constants and the diagnostics information are stored in electrically erasable programmable
read only memory (EEPROM) that retains the memory even when power to the TCU is disconnected. In operation the software continuously monitors the input values and uses these, via the shift schedule, to determine the required gear state, At the same time it monitors, via the solenoid outputs, the current gear state. Whenever the
input conditions change such that the required gear state is different to the current gear state, the TCU initiates a
gear shift to bring the two states back into line.
Once the TCU has determined the type of gear shift required the software accesses the shift logic, estimates the
engine torque output, adjusts the variable pressure solenoid ramp pressure then executes the shift.
The TCU continuously monitors every input and output circuit for short or open circuits and operating range. When
a failure or abnormal operation is detected the TCU records the condition code in the diagnostics memory and
implements a limp mode, The actual limp mode used depends upon the failure detected with the object to maintain
maximum driveability without damaging the transmission. In general input failures are handled by providing a default
value. Output failures, which are capable of damaging the transmission, result in full limp mode giving only third or
fourth gear and reverse. For further details of limp modes and memory retention refer to the Diagnostic Section.
The TCU is designed to operate at ambient temperatures between -40 and 85°C . It is also protected against
electrical noise and voltage spikes, however all the usual precautions should be observed, for example when arc welding or jump starting. TCU Inputs
To function correctly, the TCU requires engine speed, road speed, transmission sump temperature, throttle position
and gear position inputs to determine the variable pressure solenoid current ramp and on/off solenoid states. This
ensures the correct gear selection and shift feel for all driving conditions. The inputs required by the TCU are as follows: Engine Speed
The engine speed signal is derived from the tachometer signal line, a dedicated sensor or a Controlled Area Network (CAN).
Road Speed
4WD (Diesel) - The shaft speed signal is derived from the speedo sensor located on the transfer case. This signal is transmitted directly to the TCU.
4WD (Gasoline) - The speedo sensor sends the shaft speed signal to the engine control module (ECM). The
information is then transferred to the TCU via the CAN.
Transmission Sump Temperature
The transmission sump temperature sensor is a thermistor located in the solenoid wiring loom within the transmission.
This sensor is a typical NTC resistor with low temperatures producing a high resistance and high temperatures

5A-30 AUTOMATIC TRANSMISSION
Solenoid Valve Symbols (On/off Solenoids)
The solenoid symbol shown adjacent to each solenoid on the
hydraulic system schematics indicates the state of the oil flow
through the solenoid valve with the power On or 0ff. Refer to
figure 3.6 for the On/off operational details of NO solenoidvalves. Normally Open (NO) Solenoid POWER ON
Line 500 port is closed. The output port is open to exhaust at the solenoid valve. POWER OFF
The exhaust port is closed. The output port is open to line 500,Figure 3.6- Normally Open (NO) Symbols
Variable Pressure Solenoid Multiplexing System
Friction element shifting pressures are controlled by the variable pressure solenoid (VPS).
Line pressure is completely independent of shift pressure and is a function of throttle position, gear state and enginespeed.
S5 is a proportional or variable pressure solenoid that provides the signal pressure to the clutch and band regulator
valves thereby controlling shift pressures.
VPS pressure is multiplexed to the clutch regulator valve, the band regulator valve and the converter clutch regulator
valve during automatic gearshifts.
A variable pressure solenoid produces a hydraulic pressure inversely proportional to the current applied. During a
gearshift the TCU applies a progressively increasing or decreasing (ramped) current to the solenoid. Current applied will vary between a minimum of 200 mA and a maximum of 1000 mA, Increasing current decreases output (55)
pressure. Decreasing current increases output (55) pressure.
Line 500 pressure, (approximately 440 to 560 kPa), is the reference pressure for the VPS, and the VPS outputpressure is always below line 500 pressure.
When the VPS is at standby, that is no gearshift is taking place, the VPS current is set to 200 mA giving maximum output pressure.
Under steady state conditions the band and clutch regulator valve solenoids are switched off. This applies full Line
500 pressure to the plunger and because Line 500 pressure is always greater than S5 pressure it squeezes the S5
oil out between the regulator valve and the plunger. The friction elements are then fed oil pressure equal to Line 500multiplied by the amplification ratio.
When a shift is initiated the required On/off solenoid is switched on cutting the supply of Line 500 to the plunger.
At the same time the VPS pressure is reduced to the ramp start value and assumes control of the regulator valve by
pushing the plunger away from the valve. The VPS then carries out the required pressure ramp and the timed shift is
completed by switching Off the On/off solenoid and returning the VPS to the standby pressure.
This system enables either the band or clutch or both to be electrically controlled for each gearshift. Mode Indicator Light
Depending on the application, the mode indicator light may be used to indicate the mode that has been selected or
if an overheat condition exists. The mode indicator light is usually located on the instrument cluster. Communication Systems CAN
The controller area network (CAN) connects various control modules by using a twisted pair of wires, to share
common information. This results in a reduction of sensors and wiring. Typical applications include using the engine
controller to obtain the actual engine speed and throttle position, and adding these to the network. The ABS controller
(if fitted) can be used to obtain the road speed signal. This information is then available to the TCU without anyadditional sensors.

AUTOMATIC TRANSMISSION 5A-69
MECHANICAL TESTS
In Vehicle Transmission Checks
Carry out the following tests before removing the transmission. See Checking Transmission Fluid Level, Section 7.2.1.
Check that the transmission oil is not burnt (colour and smell are correct).
Ensure that the transmission is not in limp home mode (LHM).
Check that the battery terminals and the earth connections are not corroded or loose.
Check the engine stall speed is within the handbook value.
Check that the cooler flow is not restricted.
Check that all electrical plug connections are tight.
Carry out a road test to confirm the symptoms, if necessary.
Inspect the oil, ensure that there are no metal or other contaminants in the oil pan.
Diagnosing Oil Leaks
Determine the source of oil leaks by firstly cleaning down the affected area, then driving the vehicle. Inspect the seals to confirm the source of the leak. To determine the source of a rear servo oil leak, raise the vehicle on a hoist, then carry out a reverse stall.
To determine the source of a front servo leak, raise the vehicle on a hoist, then run the vehicle in second gear.
Troubleshooting Charts The troubleshooting charts are set out as follows: Table 6.2.1 Drive Faults,
Table 6.2.2 Faulty Shift Patterns.
Table 6.2.3 Shift Quality Faults.
Table 6.2.4 After Teardown Faults.
Table 6.2.1 - Drive Faults
Action
Check the fluid level. Top up as necessary. Inspect and clean C1/C2 feed. Reinstall/renew the ‘z’ link.
Remove, clean and re-install the PRV.
Inspect and replace as necessary.
Inspect and replace as necessary.
Inspect and replace as necessary.
Check servo adjustment or replace rear band
as necessary.
Check for failure in C3, C3 hub or C1/C2 cylin-
der. Repair as necessary.
Inspect and clean PRV.
Inspect and replace pump gears as necessary.
Inspect and repair as necessary.
Possible Cause
Insufficient auto transmission fluid.
Blocked feed in C1/C2 cylinder.
‘Z’ link displaced.
Primal regulator valve (PRV) jammed open.Overdrive shaft or input shaft seal ringsfailed. 3-4 or 1-2 one way clutch (OWC) installed backwards or failed.C2 piston broken or cracked.
Rear band or servo faulty.
Failure in C3, C3 hub or C1/C2 cylinder.Jammed primary regulator valve (PRV). Damaged/broken pump gears. Dislodged output shaft snap ring.Symptom
No Drive in D No Drive in ReverseNo engine braking
in Manual 1 Engine braking in Manual 1 is OKNo drive in Driveand Reverse

Type Clutch Pedal Clutch Disc Clutch Master Cylinder Clutch Release Cylinder Clutch FluidDescription
Hydraulic
Suspended 158 mm
5 - 10 mm
Single Dry Diaphragm
9.85 - 10.2 mm 9.2 mm
19.8 mm
15.87 mm
14.0 mm
17.46 mm
SAE J1703 / DOT3
SECTION 5C
CLUTCH
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 5C-1 General Specifications . . . . . . . . . . . . . . . . . . 5C-1
Fastener Tightening Specifications . . . . . . . . . 5C-2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . 5C-3 Special Tools Table . . . . . . . . . . . . . . . . . . . . . 5C-3
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 5C-4 Clutch Slips . . . . . . . . . . . . . . . . . . . . . . . . . . . 5C-4
Poor Disengagement . . . . . . . . . . . . . . . . . . . 5C-4
Hard to Shift or Will not Shift . . . . . . . . . . . . . . 5C-4
Clutch Chatters When Starting . . . . . . . . . . . . 5C-4
Difficult Pedal Operation . . . . . . . . . . . . . . . . . 5C-5
SPECIFICATIONS
GENERAL SPECIFICATIONS
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 thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
Application
Type Max. Pedal StrokePedal Free Play
TypeThickness of Disc Stroke Inner DiameterStrokeInner DiameterFree
With Load
Clutch Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . 5C-5
Component Locator . . . . . . . . . . . . . . . . . . . 5C-6 Clutch Assembly . . . . . . . . . . . . . . . . . . . . . . . 5C-6
Pedal and Master Cylinder . . . . . . . . . . . . . . . 5C-7
Maintenance and Repair . . . . . . . . . . . . . . . 5C-8
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 5C-8
Bleeding of Clutch System . . . . . . . . . . . . . . . 5C-8
Clutch Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . 5C-9
Master Cylinder . . . . . . . . . . . . . . . . . . . . . . 5C-13
Clutch Pedal . . . . . . . . . . . . . . . . . . . . . . . . . 5C-15
Clutch Oil Chamber . . . . . . . . . . . . . . . . . . . 5C-17

Model
TypeGear Ratio Oil Manufacturer WeightPart-Time 4408 (E)
E.S.O.F. Type
1 : 1
2.48 : 1
ATF S-3, S-4 or DEXRON II, III
1.2 L
Check : Every 15,000 km
Replace : Every 50,000 km Borg Warner30 kg
SECTION 5D1
TRANSFER CASE (PART TIME 4408)
TABLE OF CONTENTS
SPECIFICATIONS
GENERAL SPECIFICATIONS
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 thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
Specifications . . . . . . . . . . . . . . . . . . . . . . . 5D1-1
General Specifications . . . . . . . . . . . . . . . . . 5D1-1
Schematic and Routing Diagram . . . . . . . . 5D1-2 Part Time Transfer Case - 4408 . . . . . . . . . . 5D1-2
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . 5D1-3
Self-Diagnosis . . . . . . . . . . . . . . . . . . . . . . 5D1-4 System Description . . . . . . . . . . . . . . . . . . . . 5D1-4
Self-Diagnosis Test . . . . . . . . . . . . . . . . . . . . 5D1-8Diagnostic Diagram . . . . . . . . . . . . . . . . . . .
5D1-9
Maintenance and Repair . . . . . . . . . . . . . 5D1-10
On-Vehicle Service . . . . . . . . . . . . . . . . . . . 5D1-10
Maintenance of Transfer Case Lubricant . . 5D1-10
Transfer Case . . . . . . . . . . . . . . . . . . . . . . . 5D1-11
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . . 5D1-14
Transfer Case . . . . . . . . . . . . . . . . . . . . . . . 5D1-14
Transfer Case Control Unit (TCCU) . . . . . . 5D1-36
High LowSpecification Capacity Lubrication
Application
Description

TRANSFER CASE (PART TIME 4408) 5D1-3
Cannot Front Wheel Drive when Shifted 4H,4LDIAGNOSIS
Electric Shift Problems
Action
Overhaul and check, replace if necessary. Overhaul and check for wear and damage.
Replace if necessary.
Check sliding parts, replace if necessary.
Checks
Faulty or Damaged TCCU, Speed Sensor, Motor, Clutch or Internal Wirings Damaged or Worn Shift Cam, Hub, Fork and Rail Shift Binding Shift Fork, Hub Collar or Gear
Checks
Broken Drive Chain Action
Check sliding parts, replace if necessary.
Noise in 4WD Operation
Checks
Improper or low oil Loosened bolts or mounted partsNoisy T/C bearing Noisy gears Action
Drain and replace with specified oil. Retighten as specified.Disassemble bearings and parts and check for wear or
damage. Replace if necessary. Check for wear and damage including speedometer
gear, replace if necessary.
Noise in 4H or 4L
Checks
Worn or Damaged Sprockets or Drive Chain
Incorrect Tire Pressure Action
Disassemble and check for wear and damage, replace
if necessary. Adjust tire pressure.
Transfer Case Oil Leakage
Action
Replace the case. Clean case and parts and check for leakage.
Remove breather hose and clean, replace if necessary.Use specified oil and adjust oil level.Retighten Use specified sealant and retighten. Replace
Checks
Cracked Transfer CaseLeakage from Other PartsBreather CloggingImproper or too much OilLoosened Sealing Bolts Improperly Applied Sealant Worn or Damaged Oil Seal