sensor ISUZU KB P190 2007 Workshop Repair Manual

Automatic Transmission – 4L60E – On-vehicle Servicing Page 7C4–22
3.8 Extension Housing Oil Seal, RWD
Replace
1 Raise the vehicle and support in a safe manner, refer to 0A General Information for the location of support points.
2 Remove the rear propeller shaft, refer to 4A Propeller Shaft.
3 Place a suitable size drip tray underneath rear of transmission.

Take care not to scratch the machined seal
recess in the extension housing as
transmission fluid may weep past the outer
diameter of the installed seal.
4 Using the seal remover, Tool No. E308 (1) or equivalent, prise the oil seal (2) from rear of the
extension housing (3) and discard the seal.
5 Thoroughly clean around the seal bore in the extension housing and ensure there are no burrs.
Figure 7C4 – 20
6 Use the seal installer, Tool No. J21426 (1) and a soft faced hammer to tap a new oil seal (2) into place in
the extension housing (3).
7 Install the rear propeller shaft, refer to 4A Propeller Shaft.
8 Lower the vehicle to the ground and check the fluid level, refer to 2.1 Transmission Fluid.
Figure 7C4 – 21
3.9 Extension Housing and Rear Bush, RWD
Remove
1 Raise the vehicle and support in a safe manner, refer to 0A General Information for the location of support points.
2 As required, remove the following components:
a Rear propeller shaft, refer to 4A Propeller Shaft.
b Transmission support and mount assembly, refer to 3.7 Transmission Support and Mount.
c Vehicle speed sensor, refer to 3.5 Vehicle Speed Sensor.

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Automatic Transmission – 4L60E – On-vehicle Servicing Page 7C4–43

If the verifier disc does not clip into place, the
quick-connect fitting is not engaged, rectify
as required.
10 As a security check, push and clip each verification disc into place over the quick-connect fittings. If difficulty is experienced, repeat the installation process until the verification disc can be clipped into place over the radiator
quick-connect fitting.
11 Snap the outlet cooler line (4) in the clip (5) of the radiator fan shroud.
12 Ensure the routeing of the cooler lines is correct and there is no fouling of the lines.
13 Tighten the screw attaching the cooler lines bracket to the correct torque specifications.
Transmission cooler lines bracket
attaching screw torque specification .................. 23.0 Nm
14 If required, top up the transmission fluid level (cold).
15 Start the engine and check for any fluid leak at the fittings. If a leak is found, stop the engine and rectify the leak.
16 Check and top up the transmission fluid to the correct level as required, refer to 2.1 Transmission Fluid.
3.18 Transmission Assembly
Remove

Disconnection of the battery affects certain
vehicle electronic systems. Refer to 6D1-3
Battery, before disconnecting the battery.
1 Disconnect the battery ground lead.
2 Raise the vehicle and support in a safe manner, refer to 0A General Information for the location of support points.
3 Remove the heat shield from the neutral start and back-up lamp switch, gently prise the selector cable from the transmission external manual shaft linkage and remove the selector cable from the bracket, refer to
3.3 Selector Cable Assembly.
4 Disconnect the harness connectors from the following:
a Vehicle speed sensor, refer to 3.5 Vehicle Speed Sensor.
b Neutral start and back-up switch, refer to 3.4 Neutral Start and Back-up Lamp Switch.
c For the following on four wheel drive vehicles (4W D), refer to 7D Transfer Case and Adaptor Housing:
• neutral switch,
• 2WD – 4WD shift actuator switch,
• speed sensor.
NOTE
If the battery is connected, avoid turning the
ignition switch to the ON position, as the transfer
case control module (TTCM) must first be
removed (memory to be cleared as Check 4W D
Indicator will light).
5 Remove the following components: a Front and centre exhaust assemblies, refer to 6F Exhaust System.

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Automatic Transmission – 4L60E – On-vehicle Servicing Page 7C4–47
14 Reconnect the fuel and EVAP pipes three brackets and clips, refer to 6C Fuel System – V6.
15 Reinstall the following components:
a Starter motor, refer to 6D1-2 Starting System.
b Transmission support, refer to 3.7 Transmission Support and Mount.
c Front and centre exhaust assemblies, refer to 6F Exhaust System.
d Rear propeller shaft and for 4WD front propeller shaft, refer to 4A Propeller Shaft.
16 Reconnect the harness connectors to the following: a Vehicle speed sensor, refer to 3.5 Vehicle Speed Sensor.
b Neutral start and back-up switch, refer to 3.4 Neutral Start and Back-up Lamp Switch.
c For the following on 4W D vehicles, refer to 7D Transfer Case and Adaptor Housing:
• neutral switch,
• 2WD – 4WD shift actuator switch,
• speed sensor.
17 Reinstall the selector cable to the transmission external manual shaft linkage, secure the selector cable to the bracket and attach the heat shield to the neutral start and back-up lamp switch, refer to 3.3 Selector Cable
Assembly.
18 Perform a reverse flush of the cooler lines and a flow rate test, refer to 2.2 Reverse Flush and Flow Rate, if either of the following applies:
• the transmission fluid is contaminated,
• the transmission has been replaced,
• the torque converter has been replaced, or
• the transmission oil pump has been replaced.
19 Lower the vehicle to the ground.
20 If required, top up the transmission fluid level (cold).
21 Reconnect the battery ground lead.
22 Start the engine and check for any fluid leaking at the fittings. If a leak is found, stop the engine and rectify the leak.
23 Road test until the transmission has reached operating temperature. Re-check the fluid level and for any fluid leaks, refer to 2.1 Transmission Fluid.
3.19 Transmission Control Module
Remove
1 Ensure the ignition switch is in the OFF position.
2 Disconnect the connector (1) from the transmission control module (TCM) (2) as follows, refer to Figure 7C4 – 63: a remove the securing pin (3),
b press the locking tab and swing the lever (4) to free the connector,
c remove the connector.
3 Remove the four bolts (5) and nuts (6), then the TCM from the mounting bracket (7).
4 If required, remove the two nuts (8) and the mounting bracket from the firewall.

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7A2-2 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
Service Precaution
WARNING: THIS VEHICLE HAS 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, o
r
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 AW 30-40LE is a 4–speed fully electronically
controlled automatic transmission. It uses a
microcomputer as a control unit to judge driving
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 driving mode select function can
select three driving modes according to the driver's
preference:
• Normal mode –Normal shift pattern.
• 3rd Start mode –Starts in 3rd gear to reduce slippage
on mud, ice or snow.
• Power mode –Delays upshift timing when more
powerful acceleration is required.
Also, the built–in fail–safe function (“emergency 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 AW 30-40LE are as follows:
•
A compact structure consisting of 2 sets of planetary
gears and flat torque converter.
• Electronic control selects the optimum driving 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.
• W ide gear ratio and high torque rate of torque
converter provide excellent starting performance.
• Optimum Lock-up control of each driving mode can
have it both ways driving performance and fuel
economy.
• Excellent shift quality can be achieved by the torque
management control through the CAN
communication with the engine.



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7A2-8 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
TCM Point Table





RTW 77ASF000401

C-94 Connector
PIN No. SIGNAL NAME
A1 GND
A2 PRESSURE CONTROL SOLENOID GND
A3 —
A4 PRESSURE CONTROL SOLENOID
A5 L-up SOLENOID
A6 STARTER SW (IG1)
A7 CAN COMMUNICATION (-)
A8 —
A9 —
A10 —
A11 T/M OIL TEMPERATURE SENSOR
A12 T/M OIL TEMPERATURE SENSOR GND
A13 —
A14 —
A15 SHIFT SOLENOID (S2)
A16 SHIFT SOLENOID (S1)
A17 CAN COMMUNICATION (+)
A18 —
A19 —
A20 —
A21 —
A22 —
A23 GND
A24 BATTERY

C-95 Connector
PIN No. SIGNAL NAME
B1 NEUTRAL START SW (R)
B2 POW ER LAMP
B3 CHECK TRANS LAMP
B4 PATTERN SELECT SW (3rd START)
B5 SPEED SENSOR (+)
B6 INPUT REVOLUTION SENSOR (+)
B7 NEUTRAL START SW (D)
B8 NEUTRAL START SW (N)
B9 NEUTRAL START SW (3)
B10 3rd START LAMP
B11 OIL TEMPERATURE W ARNING LAMP
B12 DIAGNOSIS TERMINAL
B13 PATTERN SELECT SW (POW ER)
B14 SPEED SENSOR (-)
B15 —
B16 INPUT REVOLUTION SENSOR (+)
B17 —
B18 NEUTRAL START SW (L)
B19 NEUTRAL START SW (2)
B20 NEUTRAL START SW (P)
B21 TRANSMISFER LOW 4 SW
B22 BRAKE LAMP SW
B23 DIAGNOSIS OUT PUT
B24 —
B25 —
B26 —




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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-9
TCM Voltage & Resistance Check Sheet
CHECK ITEM PIN No. VALUE NOTE
VIGN C-94: 6–1 VIGN Key “ON”
Backup Power Supply C-94: 24–1 +B (Always) Key “ON”
Neutral Start Switch P “P” Position VIGN Key “ON”
Except “P” 0V
Neutral Start Switch R C-95: 1–C-94: 1 “R” Position VIGN Key “ON”
Except “R” 0V
Neutral Start Switch N C-95: 8–C-94: 1 “N” Position VIGN Key “ON”
Except “N” 0V
Neutral Start Switch D C95: 7–C-94: 1 “D” Position VIGN Key “ON”
Except “D” 0V
Neutral Start Switch 2 C-95: 19–C-94: 1 “2” Position VIGN Key “ON”
Except “2” 0V
Neutral Start Switch 1 C-95: 18–C-94: 1 “1” Position VIGN Key “ON”
Except “1” 0V
Neutral Start Switch 3 C-95: 9–C-94: 1 “3” Position VIGN Key “ON”
Except “3” 0V
Power SW C-95: 13–C-94: 1 “ON” 0V Key “ON”
“OFF” VIGN
3rd Start SW C-95: 4–C-94: 1 “ON” 0V Key “ON”
“OFF” VIGN
Brake SW C-95: 22–C-94: 1 “ON” VIGN Key “ON”
“OFF” 0V
AT Oil Temperature
Sensor C-94: 11–12 20
°C/68 °F 4.6V Engine run.
155°C/311 °F 1.1V
4L Signal C-95: 21–C-94: 1 4L 0V Key “ON”
2H/4H VIGN
Diag SW C-95: 12–C-94: 1 “ON” VIGN Key “ON”
“OFF” 0V
Shift Solenoid A (S1) C-94: 16–1 P VIGN Engine run.
R VIGN
N VIGN
D–1 VIGN
D–2 VIGN
D–3 0V
D–4 0V

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7A2-10 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
CHECK ITEM PIN No. VALUE NOTE
Shift Solenoid B (S2) C-94: 15–1 P 0V Engine run.
R 0V Engine run. (W ithout the
Reverse position lock out)
N 0V Engine run.
D–1 0V
D–2 VIGN
D–3 VIGN
D–4 0V
Lock-up Solenoid C-94: 5–1 “ON” VIGN (ex.) It is “ON” when the
vehicle speed is more than
65km/h.
“OFF” 0V
Check Trans Lamp C-95: 3–C-94: 1 “ON” 0V Key “ON”
(The lamp is “ON” for 3
second after key “ON”)
“OFF” VIGN
AT Oil Temperature Lamp C-95: 11–C-94: 1 “ON” 0V Key “ON”
(The lamp is “ON” for 3
second after key “ON”)
“OFF” VIGN
Power Lamp C-95: 2–C-94: 1 “ON” 0V Key “ON”
(The lamp is “ON” when the
Power switch is “ON”)
“OFF” VIGN
3rd Start Lamp C-95: 10–C-94: 1 “ON” 0V Key “ON”
(The lamp is “ON” when the
3rd Start switch is “ON”)
“OFF” VIGN
AT Oil Temp Sensor
Resistance C-94: 11–C-94: 12 20
°C/68 °F 12kΩ Key “OFF”
50°C/122 °F 1.5kΩ
155°C/311 °F 293Ω
Pressure Control Solenoid
Resistance C-94: 11–C-942 About

4–7
Ω(20 °C/68 °F)
Key “OFF”
Speed Sensor Resistance C-95: 5–C-95: 14 About 560Ω–
120
Ω(20 °C/68 °F)
Key “OFF”
Input Revolution Sensor
Resistance C-95: 6–C-95: 16 About 560Ω–

120
Ω(20 °C/68 °F)
Key “OFF”
Lock-up Solenoid
Resistance C-94: 5–C-94: 1 About 10Ω–

15
Ω(20 °C/68 °F)
Key “OFF”
Shift Solenoid A (S1)
Resistance C-94: 16–C-94: 1 About 10Ω–

15
Ω(20 °C/68 °F)
Key “OFF”
Shift Solenoid B (S2)
Resistance C-94: 15–C-94: 1 About 10Ω–

15
Ω(20 °C/68 °F)
Key “OFF”

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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-13
Item Description
Reverse lock out control If the select lever is moved to "R" position during forward driving, the TCM prohibits
reverse driving by turn off the S1 and turn on the S2 for prevention of danger and
protection of the automatic transmission.
1. Enable condition a) Vehicle speed is more than 11km/h (7mph).
2. Disable condition a) Vehicle speed is less than 9km/h (6mph).
b) W hen except "R" position is detected.
Auto cruise mode control If the auto cruise control can’t keep the setting speed like a uphill driving, the TCM selects the auto cruise mode shift pattern for downshifting, thus keeping the vehicle
speed.
W arm-up mode control TCM selects the warm-up mode shift pattern in engine cold condition for improvement of drivability and facilitation of warm-up.
Squat control W hen the TCM detects N→D garage shift, the TCM controls 1-3-1 shift by setting
timer, in order to improve the shift feel at N →D.
Coast down control The TCM switches to the coast down control at the coasting, in order to reduce the
roughness of shifting.
Uphill control W hen the TCM detected uphill, the TCM automatically switches to the uphill mode
in two-stage in proportion to inclination pitch to prevent the busy shifting and to
obtain an enough torque.
Downhill control W hen the TCM detected downhill, the TCM automatically switches to the downhill
mode, and shifts to the 3rd or keeps in the 3rd in order to prevent the vehicle
acceleration. Then, the brake load is reduced by a moderate engine brake and fuel
consumption is improved by the fuel cut.
Line pressure control The TCM controls the impressed current of the pressure control solenoid based on the throttle opening, and regulates suitable throttle pressure.
Engine truque management
control The TCM controls engine torque for improvement of shift quality or durability under
the following conditions.
• Upshift and downshift
• Garageshift
Indicate driving mode function The TCM indicates the following driving mode on instrument panel.
• Power mode
• 3rd start mode
Indicate oil temperature
warning function If the transmission oil temperature sensor senses that transmission oil temperature
is greater than 146 °C (295 °F) , the TCM turns on ATF warning lamp. (The warning
lamp is turned off, if oil temperature is less than 126 °C/ 259 °F .)
Fail-safe function W hen trouble occurs to vehicle sensor and each solenoid, TCM automatically exerts
fail-safe control not to spoil driveability.
• This control is exerted when sensor or actuator is in trouble, while TCM works
normally.
• The "CHECK TRANS" light flashes to alert the driver, and the transmission
must be manually shifted as follows.

Select lever position Gear position
D 4 (Fourth)
3 4 (Fourth)
2 3 (Third)
L 3 (Third)
R Reverse
Shift are firmer to prevent clutch slip and consequent wear. The fault should be
corrected as soon as possible.

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7A2-14 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
Item Description
Diagnosis function
• If there is an abnormality in vehicle sensors, each solenoid (S1, S2, SL, STH),
or throttle position sensor, "CHECK TRANS" lamp is actuated to warn the drive.
But when the abnormality items have been restored to normal, the light does
not blink.
• Faulty parts are memorized in TCM. If self-diagnosis start signal is inputted,
"CHECK TRANS" lamp is blinked and results of diagnosis are indicated. A
history of faults remains recorded even when IGN switch is off. If DG1 switch
signal is inputted, or by using F1: Clear DTC Information for TECH 2, the
records can be erased.
TECH 2
• Output of control data in the TCM
• Actuator (Solenoid) operation check
• Erasure of trouble code
• Output of DTC code



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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-17
Normal





C07RY005-1
Abnormal






C07RY00042-1

On-Board Diagnostic (OBD) System Check
This test determines if the transmission or its input or
output connections or sensors are failing.
1. Connect the Tech 2: Go through Tech 2 Operating.
2. Turn on the ignition but not the engine.
3. Push “F0” on Tech 2 to see the Diagnostic Trouble Code (DTC):
4. Do you have a DTC? YES: write down all code numbers and do the DTC
CHECK
NO: the DTC can not help you find the problem.
1. Go through “Check Trans” Check
2. If it is flashing and the flash is 0.4 seconds “ON”
and 0.4 seconds “OFF”, this means that you
should have a DTC stored. Please recheck go
to On-Board Diagnostic (OBD) System Chec
k
and if you find the same problem, replace the
Transmission Control Module (TCM).
“Check Trans” Check
1. Indicator is “ON” during 3 seconds at ignition but it
is “OFF” after the engine starts. The indicator is
working normally go to On-Board Diagnostic
(OBD) System Check .




RTW 77ASH000101


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