brake OPEL FRONTERA 1998 Workshop Manual

7A–77 AUTOMATIC TRANSMISSION (4L30–E)
Main Data And Specification
General Specifications
Remarks
ModelTHM 4L30–E
EngineV6 3.2L 6VD1DOHC
Ty p eAutomatic four speed overdrive in
4th gear lock–up clutch torque con-
verter
Shift controlHydraulic
Control systemsShift patternElectronicControl systemsShift qualityElectronic
Lock–up clutchElectronic
1st2.856
2nd1.618
Gear ratio3rd1.000
4th (O/D)0.723
Reverse2.000
Gear setNoiseless, high torque capability
Oil usedNameAT F D E X R O N–IIIOil usedQ’ty liter (qt)8.6 (9.1)
Torque converter2,100 150Stall speed (rpm)
Reverse clutchRC4
Second clutchC26Number of discsThird clutchC36Number of discs
Brake bandDouble wrap
Fourth clutchC42Number of discsOverrun clutchOC1Number of discs
OverdriveOFW10Number of rollers
PrincipalPFW26Number of sprags
Input sun gear30
Pinion gear19
Ravigneaux plan-Long pinion23g
etary gear setRing gear90
Long pinion19Number of teeth
Output sun gear46
Odi l
Sun gear31
Overdrive plane-
tary gear setPinion gear24tary gear set
Ring gear81

7A–91 AUTOMATIC TRANSMISSION (4L30–E)
(646) Gear Assembly, Input Sun
(647) Race Assembly, Sprag
(648) Ring, Retaining/Sprag
(649) Ring, Retaining
(650) Cage Assembly, Sprag
(651) Bearing, Output Shaft/Input Sun
(652) Washer, Output Shaft/Input Sun
(653) Carrier Assembly, Planetary(658) Gear, Reaction Sun
(659) Drum, Reaction Sun
(664) Band Assembly, Brake
(667) Seal, Ring/Wheel Parking Lock
(668) Wheel, Parking Lock
(672) Wheel, Speed
(673) Ring, Retaining
(675) Bearing, Thrust Assembly
Center Support Assembly
241RS010
Legend
(701) Center Support
(702) Retainer Plate(703) Plug, Lockout
(704) Spring, Overrun Lockout
(705) Valve, Overrun Lockout

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–1
TRANSMISSION
TRANSMISSION CONTROL SYSTEM (4L30–E)
CONTENTS
Service Precaution 7A1–2. . . . . . . . . . . . . . . . . . . . . .
General Description 7A1–2. . . . . . . . . . . . . . . . . . . . .
Shift Control 7A1–6. . . . . . . . . . . . . . . . . . . . . . . . . .
Band Apply Control 7A1–6. . . . . . . . . . . . . . . . . . . .
Torque Converter Clutch Control 7A1–6. . . . . . . . .
Line Pressure Control 7A1–6. . . . . . . . . . . . . . . . . .
On–Board Diagnostic System 7A1–6. . . . . . . . . . .
Fail Safe Mechanism 7A1–6. . . . . . . . . . . . . . . . . . .
Torque Management Control 7A1–6. . . . . . . . . . . .
ATF Warning Control 7A1–6. . . . . . . . . . . . . . . . . . .
ABS Control (If equipped) 7A1–6. . . . . . . . . . . . . .
Winter Drive Mode 7A1–9. . . . . . . . . . . . . . . . . . . . .
Backup Mode 7A1–9. . . . . . . . . . . . . . . . . . . . . . . . .
Functions of Input / Output Components 7A1–10. .
Diagnosis 7A1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Trans Indicator 7A1–11. . . . . . . . . . . . . . . . . .
Diagnostic Check 7A1–11. . . . . . . . . . . . . . . . . . . . . .
“Check Trans” Check 7A1–12. . . . . . . . . . . . . . . . . .
Tech2 OBD II Connection 7A1–13. . . . . . . . . . . . . . .
OBD II Diagnostic Management System 7A1–18. .
16 – Terminal Data Link Connector (DLC) 7A1–19.
Malfunction Indicator Lamp (MIL) 7A1–20. . . . . . . .
Types Of Diagnostic Trouble Codes
(DTCs) 7A1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clear DTC 7A1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC Check 7A1–21. . . . . . . . . . . . . . . . . . . . . . . . . . .
PCM Precaution 7A1–21. . . . . . . . . . . . . . . . . . . . . . .
Information On PCM 7A1–21. . . . . . . . . . . . . . . . . . .
Intermittent Conditions 7A1–21. . . . . . . . . . . . . . . . .
Transmission And PCM Identification 7A1–22. . . . .
Diagnostic Trouble Code (DTC)
Identification 7A1–24. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0218 Transmission Fluid Over
Temperature 7A1–25. . . . . . . . . . . . . . . . . . . . . . . . . . . Conditions For Setting The DTC 7A1–25. . . . . . . . .
Action Taken When The DTC Sets 7A1–25. . . . . . .
Conditions For Clearing The DTC 7A1–25. . . . . . . .
Diagnostic Aids 7A1–25. . . . . . . . . . . . . . . . . . . . . . . .
Test Description 7A1–25. . . . . . . . . . . . . . . . . . . . . . .
DTC P0560 System Voltage Malfunction 7A1–27. . .
DTC P0705 Transmission Range Switch
(Mode Switch) Illegal Position 7A1–30. . . . . . . . . . . .
DTC P0706 Transmission Range Switch
(Mode Switch) Performance 7A1–33. . . . . . . . . . . . . .
DTC P0712 Transmission Fluid Temperature
(TFT) Sensor Circuit Low Input 7A1–36. . . . . . . . . . .
DTC P0713 Transmission Fluid Temperature
(TFT) Sensor Circuit High Input 7A1–39. . . . . . . . . . .
DTC P0719 TCC Brake Switch Circuit High
(Stuck On) 7A1–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0722 Transmission Output Speed
Sensor (OSS) Low Input 7A1–45. . . . . . . . . . . . . . . . .
DTC P0723 Transmission Output Speed
Sensor (OSS) Intermittent 7A1–48. . . . . . . . . . . . . . .
DTC P0730 Transmission Incorrect
Gear Ratio 7A1–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0748 Pressure Control Solenoid
(PCS) (Force Motor) Circuit Electrical 7A1–54. . . . .
DTC P0753 Shift Solenoid A Electrical 7A1–56. . . . .
DTC P0758 Shift Solenoid B Electrical 7A1–59. . . . .
DTC P1790 ROM Transmission Side Bad
Check Sum 7A1–63. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1792 EEPROM Transmission Side
Bad Check Sum 7A1–64. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1835 Kickdown Switch Always On 7A1–65. . .
DTC P1850 Brake Band Apply Solenoid
Malfunction 7A1–67. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1860 TCC Solenoid Electrical 7A1–71. . . . . . .

7A1–2
TRANSMISSION CONTROL SYSTEM (4L30–E)
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
The 4L30–E is a 4–speed fully automatic transmission. It
uses a microcomputer as a control unit to judge running
conditions including throttle opening rate and vehicle
speed, then it sets the shifting point in the optimum timing
so that best driving performance can be achieved.
In addition, the built–in shift mode select function can
select three shift modes according to the driver’s
preference:
Normal mode –Normal shift pattern.
Winter mode –Starts in 3rd gear to reduce slippage on
ice or snow.
Power mode has a delayed upshift for when more
powerful acceleration is required.
Also, the built–in fail safe function (“backup mode”)
assures driving performance even if the vehicle speed
sensor, throttle signal or any solenoid fails.
Further, the self–diagnostic function conducts diagnosis
in a short time when the control system fails, thus
improving serviceability.
The major features of 4L30–E are as follows:
A compact structure consisting of 2 sets of planetary
gears and flat torque converter.
Electronic control selects the optimum shift mode
according to the driving conditions.
Electronic control maintains the optimum hydraulic
pressure for clutch, band brake as well as
transmission so that shift feeling is improved.
Two sets of planetary gears reduce friction of power
train.
Also, a lockup mechanism in the torque converter
reduces fuel consumption.
Wide gear ratio and high torque rate of torque
converter provide excellent starting performance.

7A1–10
TRANSMISSION CONTROL SYSTEM (4L30–E)
Functions of Input / Output Components
ComponentsFunction
Speed sensor
(fixed to transmission
(T/M))Senses rotation of output shaft and feeds the data to Powertrain Control Module
(PCM).
Throttle position sensor
(TPS)
(fixed to engine)Senses the extent of throttle valve opening and the speed of the throttle valve
lever motion to open the valve. Feeds the data to PCM.
I
N
Brake Switch (SW)
(fixed to brake pedal)Senses whether the driver has pressed the brake pedal or not and feeds the
information to PCM.
N-
P
U
Kickdown SW
(fixed to accelerator pedal)Senses whether the driver has pushed the accelerator pedal fully or not, and
feeds the information to PCM.
U
TMode SW (fixed to T/M)Senses the select lever position, and feeds the information to PCM.

S
I
Power drive SW
(fixed to front console)Senses whether the driver has selected the power mode, and feeds the informa-
tion to PCM.
I
G-T/M oil temp. sensorSenses the T/M oil temperature and feeds the data to PCM
N
A
L
Engine coolant tempera-
ture sensorSenses the engine coolant temperature, and feeds the data to PCM.
LEngine speed signalFeeds the signals monitoring engine speed to PCM from crank angle sensor.
Air conditioning informationSenses whether the air conditioner has been switched on or not, and feeds the
information to PCM.
Winter switch (fixed to front
console)Senses whether the driver has selected the winter mode, and feeds the informa-
tion to PCM.
Cruise controller * (Over-
drive OFF signal)Downshift takes place when Overdrive OFF signal is received from auto cruise
control unit.
S
Shift solenoid A, BSelects shift point and gear position suited to the vehicle running condition on
the basis of PCM output.
O
S
O-
L
Band apply solenoidControls oil flow suited to the vehicle running condition on the basis of PCM out-
put.
O
U
T-
P
E-
N
O
Torque Converter
Clutch solenoidControls clutch engagement/disengagement suited to the vehicle running condi-
tion on the basis of PCM output.
P
U
T

O
I
DForce motor
(Pressure regulator
valve)Adjusts the oil pump delivery pressure to line pressure suited to the vehicle run-
ning condition on the basis of PCM output.

S
I
Power drive mode lampInforms the driver whether the vehicle is in power mode or not.
I
G-Winter drive mode lampInforms the driver whether the vehicle is in winter mode or not.G
N
A
L
T/M monitor lamp
(“CHECK TRANS”)Informs the driver of failure in the system.
LATF warning lampLights when ATF oil temperature rises.
ABS signal *When the select lever is at “Reverse” or “L” range, sends a signal to the ABS
controller as one of the ABS control conditions.
* If equipped

7A1–24
TRANSMISSION CONTROL SYSTEM (4L30–E)
Diagnostic Trouble Code (DTC)
Identification
DTC NUM-
BERDTC NAMEDTC TYPE“CHECK
TRANS”
P0218Transmission Fluid Over TemperatureD
P0560System Voltage MalfunctionCFlash
P0705Transmission Range Switch (Mode Switch) Illegal PositionD
P0706Transmission Range Switch (Mode Switch) PerformanceD
P0712Transmission Fluid Temperature Sensor Circuit Low Input
(TFT)D
P0713Transmission Fluid Temperature (TFT) Sensor Circuit High
InputD
P0719TCC Brake Switch Circuit High (Stuck ON)D
P0722Transmission Output Speed Sensor (OSS) Low InputCFlash
P0723Transmission Output Speed Sensor (OSS) IntermittentCFlash
P0730Transmission Incorrect Gear Ratio FlashCFlash
P0748Pressure Control Solenoid (PCS) (FORCE MOTOR) Circuit
ElectricalCFlash
P0753Shift Solenoid A ElectricalCFlash
P0758Shift Solenoid B ElectricalCFlash
P1790ROM Transmission Side Bad Check SumCFlash
P1792EEPROM Transmission Side Bad Check SumCFlash
P1835Kickdown Switch Always OND
P1850Brake Band Apply Solenoid MalfunctionD
P1860TCC Solenoid ElectricalD
DTC TYPEDEFINITION
CFlashing Check Trans on 1st failure
DNo lamps
NOTE: On the following charts, refer to the Powertrain
Control Module (PCM) section for the Wiring System, and
the Body and Accessories section for circuit diagram
details, parts location, and connector configuration.

7A1–42
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0719 TCC Brake Switch Circuit High (Stuck On)
D07RW032
Circuit Description
The TCC brake switch is used to indicate brake pedal
status. The normally opened brake switch signal voltage
circuit is opened.
Brake switch supplies a B+ signal on circuit GRN/YEL to
the PCM when the brakes are applied. The PCM uses
this signal to deenergize the TCC solenoid when the
brakes are applied.
This DTC detects a closed brake switch during
accelerations. This is a type “D” DTC.
Conditions For Setting The DTC
No OSS DTCs P0722 or P0723.
The PCM detects a closed brake switch/circuit (12
volts) for 2 seconds, and the following events occur
seven consecutive times: vehicle speed is less than 8
km/h (5 mph); then vehicle speed is between 8 and 32
km/h (5 and 20 mph) for 4 seconds; then vehicle
speed is greater than 32 km/h (20 mph) for 4 seconds.
Action Taken When The DTC Sets
If throttle opening is greater than 10% and vehicle
speed is greater than 45 km/h (28 mph), then
disregard brake switch contingency for TCC off
mode.
The PCM will not illuminate the CHECK TRANS
Lamp.
Conditions For Clearing The DTC
The DTC can be cleared from the PCM history by
using a scan tool.
The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.
The PCM will cancel the DTC default actions when
the fault no longer exists and the ignition is cycled “off”
long enough to power down the PCM.
Diagnostic Aids
Inspect the wiring for poor electrical connections at
the PCM and TCC brake switch. Look for possible
bent, backed out, deformed or damaged terminals.
Check for weak terminal tension as well. Also check
for a chafed wire that could short to bare metal or
other wiring. Inspect for a broken wire inside the
insulation.
When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
Check customer driving habits and/or unusual driving
conditions (i.e. stop and go, highway).
Check brake switch for proper mounting and
adjustment.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks for voltage at the brake switch.
6. This test checks the brake switch.
9. This test checks circuit GRN/YEL at the PCM.

TRANSMISSION CONTROL SYSTEM (4L30–E)7A1–43
DTC P0719 TCC Brake Switch Circuit High (Stuck On)
StepActionYe sNo
11. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”. If ABS code
is set, check applicable fuse.
NOTE: Before clearing DTC(s), use the scan tool to record “Failure
Records” for reference, as data will be lost when the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
4. Apply then release the brake pedal.
Does the scan tool display “TCC Brake Switch” as “closed” with
the brake pedal applied, and then display “open” when the brake
pedal is released?
Go to Diagnostic
Aids
Go to Step 2
21. Connect the test light to ground.
2. Back probe ignition feed circuit terminal B13–1 at the brake
switch.
Is the test light “on”?
Go to Step 3Go to Step 4
31. Connect the test light to ground.
2. Back probe circuit terminal B13–4 at the brake switch.
Is the test light “off”?
Go to Step 7Go to Step 5
4Repair the open in battery feed circuit terminal B13–1 to the brake
switch.
If fuse is open, check circuit terminal B13–4 for a short to ground.
Is the repair complete?
Go to Step 13—
5Disconnect brake switch connector B–13 and ignition switch “on”.
Is the test light “on”?
Go to Step 8Go to Step 6
6Check the brake switch short (B13–1 and B13–4).
Was a problem found?
Go to Step 9Go to Step 10
7Check circuit terminal B13–4 for a short to voltage.
Ignition switch “on”.
Is the test light “on”?
Go to Step 8Go to Step 10
81. Disconnect the J3 (BLUE) PCM connector.
2. Check circuit terminal B13–4 for a short to voltage.
Was a problem found?
Go to Step 13Go to Step 10
9Replace the brake switch.
Is the replacement complete?
Go to Step 13—
101. Turn the ignition “off”.
2. Reconnect the J3 (BLUE) PCM connector.
3. Turn the ignition “on”.
Does the scan tool display “TCC Brake Switch” as “open” with the
brake applied, then display “closed” with the brake pedal
released?
Go to Diagnostic
Aids
Go to Step 11
11Check the PCM for faulty or intermittent connections.
Was a problem found and corrected?
Go to Step 13Go to Step 12

7A1–44
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P0719 TCC Brake Switch Circuit High (Stuck On) (Cont’d)
StepNo Ye s Action
12Replace the PCM. Refer to Powertrain Control Module (PCM) in
Automatic Transmission (4L30–E) section.
Is the replacement complete?
Go to Step 13—
131. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and ensure the following conditions
are met:
The PCM brake switch signal must indicate 0 volts for 1
seconds with the brake pedal applied.
2. Review the scan tool “DTC Info”.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to Step 1
Repair verified
Exit DTC table

7A1–60
TRANSMISSION CONTROL SYSTEM (4L30–E)
When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
Test Description
The numbers below refer to the step numbers on the
diagnostic char:
5. This test measures the resistance of the component.
7. This test checks the function of the shift solenoid B
and the transmission internal wiring harness.
11.This test checks for power to the shift solenoid B
from the ignition through the PCM.Shift Solenoid Status Chart
Gear
Shift solenoid AShift solenoid B
1stOFFON
2ndONON
3rdONOFF
4thOFFOFF
DTC P0758 Shift Solenoid B Electrical
StepActionYe sNo
11. Install the scan tool.
2. With the engine “on”, turn the ignition switch “on”.
NOTE: Before clearing DTC(s), use the scan tool to record “Failure
Records” for reference, as data will be lost when the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
Were DTCs P0753, P0758, P1860 set?
Go to Step 3Go to Step 2
21. The engine “on”.
2. Apply brake pedal and select transmission range “D”.
3. Press and hold down the winter switch and select transmission
mode “winter”.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 7
Go to Diagnostic
Aids
31. Turn the ignition “off”.
2. Disconnect the J2 (WHITE) and J3 (BLUE) PCM connectors.
3. Turn the ignition “on”.
4. Using the J39200 DVOM, measure the voltage between PCM
connector terminals J2–C2 and J2–C8.
Is the voltage within 10 – 12 volts?
Go to Step 14Go to Step 4
41. Turn the ignition “off”.
2. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J2–C2 and J3–E14.
Is the resistance within 18 – 20 ohms?
Go to Step 15Go to Step 5
51. Disconnect the transmission 16–way connector H–53.
2. Using the J39200 DVOM, measure the resistance between
terminals H53–16 and H53–15.
Is the resistance within 18 – 20 ohms?
Go to Step 16Go to Step 6
61. Disconnect the transmission main case connector M–7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7–1(A) and M7–4(C).
Is the resistance within 18 – 20 ohms?
Go to Step 17Go to Step 18
71. Turn the ignition “off”.
2. Disconnect the J2 (WHITE) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J2–C2 and J3–E14.
Is the resistance within 18 – 20 ohms?
Go to Step 8Go to Step 9
8Using the J39200 DVOM, check a continuity between PCM
connector terminal J2–C2 and ground.
Is there a continuity?
Go to Step 19Go to Step 10