Daewoo Korando. Manual — part 254
AUTOMATIC TRANSMISSION 5A-59
POWER FLOW - DRIVE 4 LOCK UP
In Drive 4 Lock Up, transmission drive is the same as for Drive 4 but with the application of the converter lock up clutch
to provide positive no-slip converter drive.
Control
Control for Drive 4 Lock Up is the same as for Drive 4 with the addition of the converter clutch circuit activated by
solenoid S7.
l
When S7 is switched On, S7 feed oil to the converter clutch control valve is switched off and allowed to exhaust
through the S7 solenoid. This allows the valve to move to the clutch engage position.
l
Regulated apply feed oil, delved from Line 500 oil at the converter clutch regulator valve, is directed by the
converter clutch control valve to the engage side of the converter clutch.
l
Converter clutch release oil is exhausted at the converter clutch control valve.
l
Converter feed oil is re-routed by the converter clutch control valve directly to the oil cooler and lubrication
circuit.
Refer to figure 5.9 arid table 5.10.
Table 5.10 - Engaged Elements - Drive 4 Lock Up
Gear State
Drive 4 Lock Up
C1
X
C2
X
C3
-
C4
-
B1
X
B2
-
1-2
OWC
-
3-4
OWC
-
LU
CLUTCH
X
ELEMENTS ENGAGED
5A-60 AUTOMATIC TRANSMISSION
DIAGNOSIS
DIAGNOSTIC SYSTEM
Recommended Test Equipment and Procedure
The test equipment is designed to be used with the control modules in all vehicles. The components used in the
transmission application are:
l
Multi Function Tester, and
l
Appropriate vehicle for testing.
Multi Function Tester (MFT)
The MFT is programmed with the special vehicle diagnostic software that allows selection of the unit under test.
The program allows the proper communication to the Transmission Control Unit (TCU).
It then requests information from the user via a menu system to select the required set up.
Examples are viewing codes, clearing error codes, and real-time operation. Set up and operation instructions are
detailed in the user manual.
This equipment can be used by trained personnel such as technicians and mechanics to diagnose electronic and
wiring problems relating to the vehicle transmission. Information that is available includes engine and road (shaft)
speed, transmission oil temperature, throttle position, solenoid/gear status and gear lever position. Current and
stored faults detected by the electronics are also available.
TCU Pin Description
The TCU pin descriptions are listed in table 6.1.1.
The wiring loom pins are shown in figure 6.1.1
Pin
No.
1
2
3
4
5
6
7
8
Identification
Common Ground
Do not use
Mode Indicator Lamp -
‘Winter’
Gear Position ‘Park’
Lamp
Gear Position ‘Reverse’
Lamp
Gear Position ‘Neutral’
Lamp
Do not use
Engine Speed Input
Sensor (-Ve)
Type
GND
-
OP
OP
OP
OP
-
IP
Description
Main power ground (or the module. Connects
directly to the battery negative terminal.
Indicates ‘WINTER’ mode shift schedule is se-
lected.
Drives the jewel in the instrument cluster to in-
dicate ‘PARK’ gear lever position.
Drives the jewel in the instrument cluster to in-
dicate ‘REVERSE’ gear lever position.
Drives the jewel in the instrument cluster to in-
dicate ‘NEUTRAL’ gear lever position.
Flywheel/Ring gear pulses to indicate engine
speed.
4WD
(Diesel)
O
O
l
l
l
l
l
4WD
(Gas)
O
O
O
l
l
l
l
l
l
Table 6.1.1 - TCU Pin Description
AUTOMATIC TRANSMISSION 5A-61
Pin
No.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Identification
Mode Indicator Lamp -
‘Power ’
Throttle Position Sensor
Output as Pulse Width
Modulation for TOD
Air Conditioner Input Signal
Kickdown Switch
Mode Switch
Transfer Case Input
(High) -4WD Lamp High
Ignition Switch
Do not use
Gear Position ‘1’ Lamp/
Gear Position Code 1
*Gear Position ‘2’ Lamp/
Gear Position Code 2*
Gear Position ‘3’ Lamp/
Gear Position Code 3*
Gear Position ‘Drive’
Lamp/
Gear Position Code 4*
CAN (-ve)
CAN (+ve)
K-line Communication Link
Engine Speed Input
Sensor (+ve)
Road Speed Pulses
Shaft Speed Sensor
Signal
Throttle Position Sensor -
Ground
Throttle Position Sensor -
Reference
Throttle Position Sensor -
Input Signal
Transfer(or Case Input
(Low) - 4WD Lamp Low
Type
OP
OP
-
IP
IP
IP
IP
-
OP
OP
OP
OP
I/O
I/O
I/O
IP
OP
IP
GND
REF
IP
IP
Description
Indicates ‘POWER’ mode shift schedule is se-
lected.
Provides an analogue signal of the throttle po-
sition for the Torque on Demand (TOD) Con-
trol Module.
Input
Switch to indicate when a kickdown is required
at high throttle position.
Switch to select ‘NORMAL’, ‘POWER’ or ‘WIN-
TER’ shift schedule.
Voltage varies from OV to 12V.
Switch to indicate 4WD’HIGH RANGE’ is se-
lected.
Ignition power is used as the main power source
to drive the unit and the solenoids.
Drives jewel in the instrument cluster to indi-
cate
gear leverposition’1'. Drives jewel in the instru-
ment cluster to indicate
gear lever position’2'. Drives jewel in the instru-
ment cluster to indicate gear lever position’3'.
Drives jewel in the instrument cluster to indi-
cate
‘DRIVE’. gear lever position.
CAN low side bus communication (CANL).
CAN high side bus communication (CANH).
Diagnostic information and vehicle coding.
Flywheel/Ring gear pulses to indicate engine
speed.
Road speed signals derived from shaft speed
sensors.
This sensor transmit shaft speed signal to the
TCU.
Throttle position sensor ground.
This is the 5V reference voltage supply gener-
ated by the unit for the throttle position sensor.
This sensor is a resistance potentiometer indi-
cating throttle position.
Voltage varies 0V to 5V.
Switch to indicate 4WD’LOW RANGE’ is se-
lected.
4WD
(Diesel)
O
O
O
O
l
l
l
4WD
(Gas)
O
O
O
O
O
O
O
O
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
5A-62 AUTOMATIC TRANSMISSION
Identification
Gear Lever Position
Transmission Oil
Temperature
Solenoid 4
Solenoid 1
Do not use
Solenoid 5
Return (-ve)
Gear Lever Position -
Ground
Transmission Oil
Temperature - Ground
Solenoid 6
Solenoid 2
Solenoid 3
Solenoid 7
Do not use
Solenoid 5 (+ve)
Type
IP
IP
OP
OP
-
IP
GND
GND
OP
OP
OP
OP
-
OP
Description
This switch has discreet values indicating the
positions selected by the gear shift lever
(PRNDL). Voltage varies 0V to 5V.
Resistive sensor indicates transmission tem-
perature .
High R = low temp
Low R = high temp
Voltage varies 0V to 5V.
On/Off solenoid normally open, combines with
other On/off solenoid 3 for shift quality and se-
quencing.
On/off solenoid normally open, combines with
other On/off solenoid to set the selected gear.
This ensures the earth path for the VPS and
the current in this line is monitored to give feed-
back control of the VPS.
PRNDL switch ground.
Ground reference for temperature sensor in-
put.
On/Off solenoid normally open, sets low/high
line pressure.
On/off solenoid normally open, combines with
other On/off solenoid to set the selected gear.
On/off solenoid normally open, combines with
On/off solenoid 4 for shift quality and sequenc-
ing.
On/off solenoid normally open, locks up the
torque converter to Increase cruising efficiency.
This is the variable force solenoid which ramps
the pressure during gear changes and solenoid
switching, to enhance transmission shift quality.
4WD
(Diesel)
O
O
l
l
4WD
(Gas)
O
O
l
l
l
l
l
l
l
l
l
l
Pin
No.
31
32
33
34
35
36
37
38
39
40
41
42
43
44
l
l
l
l
l
l
l
l
l
l
l
l
l
= circuit connected
O
= circuit not connected
*
= unique
OP = Output
IP
= Input
I/O
= Input/output
GND = Ground
REF = Reference
Notice :
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст