2004 ISUZU TF SERIES Workshop Manual

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Page 4153 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (JR405E) 7A3-1
SECTION 7A3
ON-VEHICLE SERVICE (JR405E)
TABLE OF CONTENTS
PAGE
Description ....................................................................................

ON-VEHICLE SERVICE (JR405E) 7A3-1
SECTION 7A3
ON-VEHICLE SERVICE (JR405E)
TABLE OF CONTENTS
PAGE
Description ...................................................................................................................... 7A3 – 2
Automatic Transmission Fluid (ATF) ............................................................................. 7A3 – 2
ATF Level ......................................................................................................................... 7A3 – 2
ATF Change ..................................................................................................................... 7A3 – 3
Transmission Control Module (TCM) ............................................................................ 7A3 – 4
Throttle Position Sensor ................................................................................................ 7A3 – 5
Inhibitor Switch ............................................................................................................... 7A3 – 6
Speed Sensor .................................................................................................................. 7A3 – 8
Turbine Sensor ................................................................................................................ 7A3 – 9
Power and 3rd Start Switch ........................................................................................... 7A3 – 9
Select Lever ..................................................................................................................... 7A3 –10
Shift Cable ....................................................................................................................... 7A3 –13
Solenoids, Oil Pressure Switch and Oil Temperature Sensor .................................... 7A3 –16
Control Valve Assembly ................................................................................................. 7A3 –18
Flushing the Transmission Fluid Cooler and Line ....................................................... 7A3 –19
Transmission Assembly ................................................................................................. 7A3 –20

Page 4154 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-2 ON-VEHICLE SERVICE (JR405E)
DESCRIPTION
Before performing on-vehicle service on the automatic
transmission, check that the engine idling speed and
general engine condition are normal.

Page 4155 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (JR405E) 7A3-3
Cold Level
The vehicle must not have been driven so that the
temperature reaches around 20C (68F) before the
cold level check is made.
1. Park the vehicle on

ON-VEHICLE SERVICE (JR405E) 7A3-3
Cold Level
The vehicle must not have been driven so that the
temperature reaches around 20C (68F) before the
cold level check is made.
1. Park the vehicle on a level surface.
2. Apply the parking brake firmly.
3. Start the engine and allow it to warm up.
The engine coolant temperature gauge needle
should be midway between the “C” mark and “H”
mark.
4. Let the engine run at idle.
Move the select lever slowly through all the gea
r
ranges.
Stop in each range just long enough for the
transmission to engage.
5. Return the select lever either “P” or “N”.
6. Remove the ATF level dipstick.
7. Wipe the dipstick clean with a paper towel.
8. Reinsert the dipstick and wait several seconds.

9. Remove the dipstick.
The ATF level should be inside the “C”range on the
dipstick.
If the ATF level is below the “C” range, ATF must be
added.
242R300002

ATF CHANGE
1. Start the engine and allow it to idle until the ATF
reaches a temperature of 40-50C
2. Park the vehicle on level ground and block the
wheels.
3. Stop the engine.
4. Raise vehicle and support with suitable safety
stands.
5. Remove the drain plug from the oil pan and drain the
ATF (approximately 6 liters).
6. Remove the oil pan.
7. Inspect the oil pan (details written below).
8. Install the oil pan.
Note:
Use new gasket. Clean the oil pan and magnet.
Oil pan bolt torque : 8 Nm (69 lbin)
9. Replace the gasket and install the drain plug.
Drain plug torque : 35 Nm (26 lbft)
Note:
Do not reuse old washer (gasket).
Clean the drain plug (especially the threaded section).
10. Pour about 5 liters of new ATF. Then, add more ATF
carefully as necessary using the dipstick.
Refer to “ATF LEVEL” previously in this section.
Note:
Keep the engine idle (do not stop it) during the oil level
adjustment.
11. Remove the safety stands and wheel blocks. Inspect
1. Check the drain plug tip for adhesion of foreign
substances.
2. Check the drained ATF for color, smell and inclusion
of foreign substances.
3. Check the oil pan bottom and magnet for adhesion o
f
foreign substances.
If a problem is discovered during those checks, the
Automatic transmission must be overhauled.
Note:
The torque converter and the oil strainer need replaced
with new ones if the drained ATF contains large
amounts of metallic or facing flakes.
In addition, flush the ATF cooler circuit

Page 4156 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-4 ON-VEHICLE SERVICE (JR405E)
TRANSMISSION CONTROL MODULE (TCM)

RTW37ALF001901

Remove and Disconnect
1. Disconnect the negative battery cable.
2. Remove the connectors.
3. Remove

Page 4157 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (JR405E) 7A3-5
THROTTLE POSITION SENSOR

1
P1010052
The throttle position sensor (1) is fitted on the throttle
valve body.

Adjust
1. Turn the starter switch to t

Page 4158 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-6 ON-VEHICLE SERVICE (JR405E)
INHIBITOR SWITCH
The inhibitor switch is attached to the right side of the
transmission.

Inspect
1. Block the wheels.
2. Disconnect the negative battery ca

Page 4159 of 4264

ISUZU TF SERIES 2004 Workshop Manual ON-VEHICLE SERVICE (JR405E) 7A3-7
Install or Connect
1. Install the inhibitor switch (4) to the transmission.
Temporarily tighten the inhibitor switch bolts.
2. Move the manual shaft select l

Page 4160 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A3-8 ON-VEHICLE SERVICE (JR405E)
SPEED SENSOR
The speed sensor is attached to the right side of the
transmission.
240L300001
Legend
1. Inhibitor switch
2. Speed sensor
3. Turbine sensor

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