tccu SSANGYONG MUSSO 2003 User Guide
[x] Cancel search | Manufacturer: SSANGYONG, Model Year: 2003, Model line: MUSSO, Model: SSANGYONG MUSSO 2003Pages: 1574, PDF Size: 26.41 MB
Page 1097 of 1574
5D2-8 TRANSFER CASE (TOD)Position Code 1/2/3/4 111 0
1010 0010 0000 111 0
Initial Operation of TOD Control Unit When ignition
“ON ”, “4L ” and "4WD check" lamps illuminates
for 0.6second to check bulb in instrument panel, then perform diagnosis of system. Position Encoder The Position Encoder is used by the TCCU to determine the
position of the Shift Motor. Each motor position is identified bya position code as shown. Notice
1. All other position codes are invalid
2. Position Input Open Circuit (> 4.5V) = 1
3. Position Input shorted to Speed/Position Return (< 0.5V) = 0
Motor Position
Left Stop
Left of High
High
Right of High Zone 1 Position Code 1/2/3/4
1001 0001 0101 0100 Motor Position
NeutralZone 2
Low
Right Stop
Page 1098 of 1574
TRANSFER CASE (TOD) 5D2-9
4H/4L Switch Input4H 4H 4H 4H 4H 4H4H4H4H
4L 4L 4L4L 4L 4L4L4L 4L
Position Sensor Interpretation
1. When the module powers up, it will read the position sensor
and the 4H/4L switch input and respond to the possible codes as follows
2. A command to shift will only be acted upon if the TCCU is reading a valid code at the time the command to shift ismade.
3. After a shift has started, the TCCU will power the shift motor until the code for the requested position is read. If an invalidcode is read, the TCCU will go into a default mode.
4. During a shift attempt, the shift motor will be energized for a maximum of 5 seconds. Motor Position
Left Stop
Left of High
High
Right of High
Zone 1
Neutral
Zone 2 Low
Right Stop
Left Stop
Left of High High
Right of High
Zone 1
Neutral Zone 2 Low
Right Stop Action
No action required. 4L bulb off. No action required. 4L bulb off. No action required. 4L bulb off. Blink 4L bulb. After the shift conditions are met, attempt a shiftto 4H under conditions of below 87 rpm in front and rearpropshaft and “Neutral ” position. After succesfully shifting into
4H, stop blinking 4L bulb. Same as above Same as aboveSame as aboveSame as aboveSame as above Blink 4L bulb. After the shift conditions are met, attempt a shift to 4L. After succesfully shifting into 4L, stop blinking 4L bulb.Same as aboveSame as aboveSame as above Same as above Same as aboveSame as aboveNo action required. 4L bulb on. No action required. 4L bulb on.
Page 1099 of 1574
5D2-10 TRANSFER CASE (TOD) Electric Shift System Operation
The Electric Shift System is responsible for changing the Transfer Case gear ratio by controlling the electric shift
motor. The TCCU monitors the 4H/4L switch, neutral switch, speed sensors, position encoder, and ignition switch. A range change is initiated when
1. The 4H/4L Switch is changed from 4H to 4L or from 4L to 4H.
2. The motor position (as indicated by the position encoder) does not match the 4H/4L Switch immediately after theignition is turned on.
1. Shift Criteria When a range change is initiated a Diagnostic Test will be completed on the motor, speed sensors, and position
encoder. If the Diagnostic Test fails, the shift will not be attempted. If all components are operating properly, theTCCU will attempt a range change after the following shift criteria are met:
a. The transmission is in neutral for 2 seconds after the shift is requested.
b. Both propshaft speeds are below 87 rpm (2580 pulses/minute).
If the transmission is taken out of neutral before 2 seconds has elapsed, or either propshaft speed increases above the limit, the shift will be suspended and the 4L Indicator will continue to blink until the criteria are met again or the 4H/4L Switch is returned to the original position.
2. Range Change When the shift criteria are met, the motor is rotated in the appropriate direction (as determined by the selectorswitch) until one of the following occurs:
a. The motor reaches its destination.
b. The motor is on for 5 seconds without reaching its destination. The shift has failed and the TCCU will respond as default mode.
c. A fault occurs with either the motor or position encoder. Refer to the diagnosis requirement.
When the motor is energized, the Ignition, 4H/4L Switch, propshaft speeds, and transmission neutral inputs are ignored.
3. Indicator Function Once a range change has been initiated the 4L Indicator will begin to blink at a rate of 0.3 seconds on, 0.3 seconds off until the shift is completed or canceled.
If a successful shift has been completed, the 4L Indicator will be illuminated if the motor is in Low and it will be turned off if the motor is in High. 4L Indicator illuminates as below figure.
4H
4L
@ : shift is completed
4L
4H
@ : shift is completed
Page 1100 of 1574
TRANSFER CASE (TOD) 5D2-11
4. Electric Shift Default ModeIf the motor fails to reach its destination, the TCCU will attempt the following (in order):
a. The TCCU will wait 3 seconds then attempt the shift again.
b. If the second attempt to reach the destination fails the TCCU will wait 3 seconds then attempt to rotate the motor back to the original position. If successful, all future shifts will be inhibited until the Ignition is cycled.
c. If the attempt to return to the original position fails, the TCCU will wait 3 seconds then attempt to rotate the motor to the original position again. If the second attempt to return to the original position is successful, the “4WD CHECK ” lamp will be illuminated, and all future shifts will be inhibited until the Ignition is cycled.
d. If the second attempt to return to the original position fails the motor will be turned off, the “4WD CHECK ” lamp
will be illuminated, and all future shifts will be inhibited until the Ignition is cycled.
TOD TM
System Operation
The TOD TM
System is responsible for distributing torque between the front and rear axles. The TCCU monitors the
propshaft speeds, operating range (High/Low), and ABS activity and then applies a calculated amount of torque tothe front axle by Pulse Width Modulating the current applied to the EMC.
1. Touch-off Torque
The minimum EMC Duty Cycle is based on the vehicle speed and throttle positionThe TCCU receives the TPS signal from the following sources:On vehicles equipped with CAN, the TCCU receives the TPS signal from the CAN bus.
2. When Slip Detection
The TCCU continuously monitors the front and rear propshaft speeds to detect wheel slip.
3. Wheel Slip Control When wheel slip is detected the TCCU controls the EMC duty cycle as necessary until the wheel slip is reduced
below the allowable limit. The EMC Duty Cycle will then be reduced to the Touch-Off value.
4. Brake/ABS Strategy When the ABS System is active, the EMC Duty Cycle is set to a fixed duty cycle (30%) to aid in braking without counteracting the ABS System.
5. 4L Strategy When the system is operating in 4L, the TCCU continues TOD TM
(operation provided that the propshaft speed is
below 175 rpm (5220 pulses/minute)). When the speed increases above 175 rpm, the EMC Duty Cycle is set tothe maximum value (88%) which applies the maximum available torque to the front axle.
Page 1104 of 1574
TRANSFER CASE (TOD) 5D2-15
DIAGNOSIS
While the TCCU is active it periodically monitors its inputs and outputs. If a fault is detected the “4WD CHECK ” lamp
is illuminated and a fault code is stored in the TCCU memory.
When requested, fault codes are downloaded to a diagnostic connector (K-line) serial communications using SCAN- 100. DIAGNOSTIC TESTS 1.TCCU Internal Function
When the Ignition is turned on the TCCU tests its ROM and RAM. If there is a fault, the TCCU immediately resets itself and re-tests the ROM and RAM. If the fault persists the TCCU continues to reset and re-test until the fault is corrected or the ignition is turned off. All TCCU functions are inhibited until the fault is corrected. The “4WD
CHECK ” lamp is not illuminated if there is a ROM or RAM fault.
If the ROM/RAM passes the EEPROM memory is tested. If there is a fault the “4WD CHECK ” lamp is illuminated
and the TCCU continues to operate using the default calibration data stored in ROM. Fault codes are not storedwhen there is an EEPROM fault.
An EEPROM fault can only be cleared by cycling ignition off-on.
2.Shift Motor Assembly Test If the TCCU detects a shift motor or position encoder fault continuously for one second the ‘4WD CHECK ” lamp is
turned on and the appropriate fault code is stored in memory.
a. A shift motor fault when the motor is off is defined as follows:
Motor H-L shorted to GroundMotor L-H shorted to GroundMotor open circuit
b. A shift motor fault when the motor is energized is defined as follows: Motor H-L shorted to GroundMotor L-H shorted to GroundMotor H-L shorted to Motor L-H Motor open circuit
c. A position encoder fault is defined as follows: Any position code which does not correspond to the valid 9 codes. A short to ground on any of the encoder lines.
d. If no shifts are in progress when a failure occurs the TCCU will not respond to any shift commands.
e. If a shift command has been received, but not acted upon when a failure occurs the TCCU will cancel the command and not respond to any subsequent shift commands.
f. If a shift command is in progress when an invalid position code is confirmed it will be halted and the TCCU will turn the motor toward the high position. Afterwards the TCCU will not respond to any shift commands.
Page 1105 of 1574
5D2-16 TRANSFER CASE (TOD)g. If the shift motor/position encoder assembly failure (other than a motor failure which occurs when the motor isenergized) recovers continuously for one second the TCCU will function normally. The “4WD CHECK ” lamp is
turned off but the fault code will remain in memory.
h. A motor failure (i.e. open or short circuit) which occurs when the motor is energized can only be cleared by cycling the ignition off-on.
3. Front Speed Sensor Test If a Front Speed Sensor fault is detected continuously for 0.5 second the “4WD CHECK ” lamp is illuminated. The
TCCU then responds as follows:
a. If the system is in High Range the TCCU uses the Rear Speed Sensor to determine the EMC Touch Off level and wheel slip control is suspended.
b. If the system is in Low Range, the EMC Duty Cycle is set to maximum (independent of vehicle speed) until the system is shifted out of 4L.
c. All Electric Shift activity is halted until the Ignition is cycled. If a shift is in progress it will be completed.
If the Front Speed Sensor recovers continuously for O.5 second the TCCU will function normally. The “4WD
CHECK ” lamp is turned off but the fault code will remain in memory.
4. Rear Speed Sensor Test If a Rear Speed Sensor fault is detected continuously for 0.5 second the “4WD CHECK ” lamp is illuminated. The
TCCU then responds as follows:
a. If the system is in High Range the TCCU uses the Front Speed Sensor to determine the EMC Touch Off level and wheel slip control is suspended.
b. If the system is in Low Range, the EMC Duty Cycle is set to maximum (independent of vehicle speed) until the system is shifted out of 4L.
c. All Electric Shift activity is halted until the Ignition is cycled. If a shift is in progress it will be completed.
If the Rear Speed Sensor recovers continuously for 0.5 second the TCCU will function normally. The “4WD
CHECK ” lamp is turned off but the fault code will remain in memory.
5. Both Speed Sensor Faulty If both the Front and Rear Speed Sensors are faulty continuously for 0.5 seconds the “4WD CHECK ” lamp is
illuminated. The TCCU then responds as follows:
a. If the system is in High Range the TCCU sets the EMC Touch Off level based on a vehicle speed of 0 and wheel slip control is suspended.
b. If the system is in Low Range, the EMC Duty Cycle is set to maximum until the system is shifted out of 4L.
c. All Electric Shift activity is halted until the Ignition is cycled. If a shift is in progress it will be completed.
If both Speed Sensors recover continuously for 0.5 second the TCCU will function normally. The “4WD CHECK ”
lamp is turned off but the fault code will remain in memory.
6. EMC Test The EMC is tested for open circuit or short circuit to ground. If a fault is detected continuously for 0.8 second the “4WD CHECK ” lamp is turned on and all TOD TM
activity is halted.
If the EMC recovers continuously for 0.8 second the TCCU will function normally. The “4WD CHECK ” lamp is
turned off but the fault code will remain in memory.
Page 1106 of 1574
TRANSFER CASE (TOD) 5D2-17
ClassificationTCCU
EMC
Speed Sensor
Shift Motor
Position Encoder
DIAGNOSTIC TROUBLE CODES (DTC
’s)
1. Diagnostic Trouble Code Retention The first time a fault is detected a DTC is stored in the TCCU ’s
Non-Volatile memory. This DTC will remain in memory until the TCCU is instructed to erase DTC ’s by SCAN-100. DTC ’s
will not be erased by disconnecting power to the TCCU.
2. Diagnostic Trouble Code AssignmentsCode 1714 171517161721 1722 1731173217331734 1735 173617411742 1743 1750175117521753 1754 Description
EEPROM Checksum Fault TPS Loss of Signal
TPS Out of Range
EMC Open / Short to Battery
EMC Short to ground
Front Speed Sensor Voltage Low
Front Speed Sensor Voltage High
Rear Speed Sensor Voltage Low
Rear Speed Sensor Voltage High
Speed Sensor Reference Voltage Low
Speed Sensor Reference Voltage High Motor Open / Shorted to Battery
Motor Output Shorted to Ground
Shift System Timeout
General Position Encoder Fault (Invalid Code) Position 1 Shorted to Ground Position 2 Shorted to GroundPosition 3 Shorted to Ground Position 4 Shorted to Ground
Page 1211 of 1574
BODY WIRING SYSTEM 9A-9
44 Joint Connector.................................................... Ground
45 Door Unlock Switch
46 Front Fog Lamp Switch
47 Rear Defogger Switch
4 8 ECS Switch
49 Rear Fog Lamp Switch ........................................Rear Fog Lamp
50 Digital Clock
51 Thermo Amplifier
52 Glove Box Lamp Switch
53 Air Conditioner Wiring Connetor
54 Glove Box Lamp
55 Ground 6
56 Ground 6 ............................................................. Gasoline E/G
57 Ground 7 ............................................................. Gasoline E/G
58 Wheel Speed Sensor (FR) ..................................ABS 5.0 or ABD 5.0
59 O 2 Sensor
............................................................ E32 Gasoline E/G
60 Engine Main Wiring Connector ............................Gasoline E/G with MSE ECU
61 HFM ..................................................................... Gasoline E/G with HFM ECU
61-1 MSE ..................................................................... Gasoline E/G with MSE ECU
62 Front Door Wiring Connector (Passenger Side)
63 Front door Wiring Connector (Passenger Side)
64 Joint Connector (B+)
65 Audio
66 Audio
67 Air Bag Wiring Connector
68 Chime Bell
6 9 Buzzer
70 Kick Down Switch ................................................. Automatic Transmission
71 Diode 2 ................................................................ Manual Transmission
72 Ground 3
73 Ground 4
74 Front Cigarette Lighter
75 Diode 3 ................................................................ Automatic Transmission, MB
76 S/E Mode Selector Switch ....................................Automatic Transmission
76-1 Mode Switch ........................................................ Automatic Transmission
77 “B” Position Switch .............................................. Automatic Transmission
78 “P” Position Switch .............................................. Automatic Transmission
79 Shift Lock Solenoid Valve .....................................Automatic Transmission
8 0 TCCU
81 Ground 5 ............................................................. Gasoline E/G
81-1 Ground 7 ............................................................. Diesel E/G
82 Seat Extension Wiring Connector
83 Transmission Extension Wiring Connector ...........E23 & E32 Gasoline E/G with Manual Transmission
83-1 T ransmission Extension Wiring Connector ...........Diesel E/G with MB A/T
84 Transmission Extension Wiring Connector ...........Gasoline E/G with Manual Transmission
84-1 T ransmission Extension Wiring Connector ...........Diesel E/G with Manual Transmission or BTRE A/T
85 Transmission Extension Wiring Connector ...........E23 & E32 Gasoline E/G with A/T
85-1 T ransmission Extension Wiring Connector ...........Diesel E/G with BTRE A/T
86 Transfer Case Motor
87 Transfer Case Motor
88 Vehicle Speed Sensor
89 Fuel Gauge
90 Acceleration Sensor ............................................. ABS 5.0
91 Seat Belt Switch (Passenger)
92 Seat Heater Switch
93 Head Lamp Leveling Device Switch .....................Leveling Device
Page 1353 of 1574
POSITION OF CONNECTORS AND GROUNDS 2-3
C361 C371C381C401C402C403 22
88626 White
ColorlessColorlessColorlessColorlessColorless Main - Co-Driver DoorFloor - Rear Left DoorFloor - Rear Right DoorFloor - Tail GateFloor - Tail GateFloor - Tail Gate
Inside Co-Driver Side Cowl PanelCenter 'B' PillarCenter Left 'B' PillarBehind The Left LampBehind The Left LampBehind The Left Lamp
2. CONNECTOR, GROUND AND SPLICE PACK INFORMATION
1) CONNECTOR
Connector
Number Connecting Wiring HarnessConnector PositionColorPin
Number
C101 C102C103C104C105C106C107 C108 C109C110C111C112C201C203C204C205 C206
C206B C207 C208C208
C208B C209C210C211C212 C213 C251C301C302C303 C304 C305 C351212 2
15 143 2
16 6
40 6 84
10 33
4 [6]
1616121584
1417 6 3
20 1614 12 6
22 Colorless Colorless
WhiteBlackBlackBlackBlack Black BlackBlackBlack Gray
White
Colorless WhiteBlackBlack Black BlackBlackBlackBlackBlackBlackBlack
White
Colorless Black
White WhiteWhite
Colorless White
Blue Main - Engine Main - EngineMain - EngineEngine - MainEngine - EngineGenerator - EngineGenerator - Engine Genertor - Engine Engine - MainMain - Engine MainEngine Main - ECM MainEngine Main - ECM MainMain - RoofMain Air BagMain - Driver SeatMain - T/MMain - Fuel Tank Main - Fuel Tank Main - T/MMain - T/MMain - T/MMain - T/MMain - T/MMain - T/MDLC Connector - MainMain - Air ConMain - ECM Main Driver Seat - Driver Seat, AUX Main - FloorMain - Floor Main - Floor Main - FloorMain - Floor Main - Driver DoorInside The Engine Room Fuse Block Inside The Engine Room Fuse BlockInside The Engine Room Fuse BlockUnder The Engine Room Fuse BlockBeside Pre-Heating Unit (DSL)Under The Air Cleaner Housing (DSL, Turbo)Under The Air Cleaner Housing (DSL, N/Turbo) Under The Air Cleaner Housing (GSL) Under The Coolant Reservoir TankBehind The ABS Module (HFM)Center The Engine Room Dash PanelCenter The Engine Room Dash PanelUpper The I/P Fuse BlockLeft The AudioUnder The Driver SeatUpper The T/C MotorUpper The T/C (DSL) Upper The T/C (GSL) Upper The T/CUpper The T/C (GSL)Upper The T/C (DSL)Upper The T/C (GSL)Upper The T/C (DSL)Upper The T/C (GSL)Beside The Steering ColumnBehind The Glove BoxBeside The ECM (MSE) Under The Driver Seat Beside The I/P Relay BlockBeside The I/P Relay BlockBeside The I/P Relay Block Inside Co-Driver Side Cowl Panel Beside Center ConsoleUpper The I/P Fuse Block
Connector
Number Connecting Wiring HarnessConnector PositionColorPin
Number
2) GROUND
G101 G102 G103G201 G202 G203G204G205 G206 G207G208 G209 G301G302G303 Ground Position
Wiring Harness
Ground
Number
Behind The Left LampBeside The Start Motor Behind The Right Head Lamp Right The I/P Fuse BlockBeside The STICSUpper The ECM Behind The Ashtray Beside The TCCUBeside The ABS Module Beside THe ECM Under THe CO-Driver SeatBeside The EBCMCenter The Left 'B' Pillar Beside The Left Rear Speaker Beside The Right Rear Speaker
Engine Engine Engine
Main MainMain Main MainMain Main MainMain
Floor Floor Floor
* [ ] : EURO III
Page 1367 of 1574
USAGE AND CAPACITY OF FUSES IN FUSE BOX 4-3
2. I/P FUSE BLOCK
1) POSITION OF RELAY AND FUSE 2) USAGE OF FUSE IN PASSENGER ROOM FUSE BOX
* 30 : BAT(+) Power Supply Through Ef1.
15A10A
10A15A10A
20A10A10A
10AST F110AIG1 F210AIG1 F3
ACC10AF4 B+30AF5
B+
(1) F6
F13
IG1
F20
15AF730AF1410AF21
F8F15F22
20AF915AF1610AF23
F10
B+
(2)
F17
F24
20AF1115AF1810A 15A
20AF1210AIG2 F19
30A
F25 F26
F27
85
87a3087
86
85
-3087
86
BE
L
85-
30
87
86
2) RELAY BOX
FRONT WIPERRELAY DEFOGGER
RELAY TURN SIGNAL
RELAY GSL : FUEL PUMP RELAYDSL : CIGAR LIGHTER, P/SOCKET RELAY A/T SHIFT LOCK
RELAY
8730
8685
8730
8685
8730
8685
8730
8685
A/T:PNP RELAY M/T:CLUTCH INTER LOCK RELAY SUNROOF
RELAY 'B' S/W
INTERLOCK RELAY POWER WINDER
RELAY 10A 10A10A10A30A15A15A10A20A20A20A20A30A15A15A10A 15A 10A10A10A10A10A10A10A15A30A
F1F2F3F4F5F6F7F8F9
F10 F11F12F14F15F16F17 F18 F19F20F21F22F23F24F25F26F27
Fuse No Capacity Usage
Starter Motor Relay Air BagABS/ABDOutside Mirror, AudioCigar Lighter, Power SocketStop LampHazard SwitchInteriorFuel Pump (Only GSL)TCCU/TOD, Power seatOVPR 1 (Only GSL)OVPR 4 (Only GSL)Heated GlassSun RoofRear Fog Lamp, Power ANT., ECSDLCFront Wiper & WasherRear Wiper & WasherTCCU/TCMBack Up Lamp, Turn Signal LampHead Lamp, Cluster OVPR 3 (Only GSL) Speed Sensor, Unit, Relay CoilNot UsedNot UsedNot Used
Power Supply
30 BAT(+)
ACC (15C) IGN2 (15A)
30 BAT (+)
IGN1 (15)
IGN1 (15)
SPARE
8730
8685
8730
8685
ECS
RELAY ABS WARNING
LAMP RELAY
8730
8685