1998 ISUZU TROOPER Service Repair Manual

wipers remove seats coolant reservoir door lock wiring gas tank size

Page 2313 of 3573

ISUZU TROOPER 1998 Service Repair Manual 7A1±68
TRANSMISSION CONTROL SYSTEM (4L30±E)
Diagnostic Aids
Inspect the wiring for poor electrical connection at the
PCM and at the transmission 16±way connector.
Look for possible bent, backed ou

7A1±68
TRANSMISSION CONTROL SYSTEM (4L30±E)
Diagnostic Aids
Inspect the wiring for poor electrical connection at the
PCM and at the transmission 16±way connector.
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.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks for power to the brake band apply
solenoid from the ignition through the PCM.
4. This test checks the resistance of the transmission
internal wiring harness and brake band apply
solenoid.
5. This test checks the ability of the PCM and wiring to
control the ground circuit.
DTC P1850 Brake Band Apply Solenoid Malfunction
StepActionYe sNo
11. Install the scan tool.
2. With the engine ªonº, turn the ignition switch ªonº.
NOTE: Before clearing DTC(s), use the scan tool to record ªFailure
Recordsº for reference, as data will be lost when the ªClear Infoº
function is used.
3. Record the DTC ªFailure Recordsº.
Were DTCs P0753, P0758 set?
Go to Step 2Go to Step 3
2Using the J39200 DVOM, back probe between PCM connector
terminals J3±E14 and J2±C8.
Is the voltage between 10 to 12 volts?
Go to Step 4Go to Step 5
31. Turn the ignition ªoffº.
2. Disconnect the J1 (RED) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J1±A16 and J3±E14.
Is the resistance within 10±12 ohms?
Go to Step 11Go to Step 12
4Using the J39200 DVOM, back probe between PCM connector
terminals J1±A16 and J2±C8.
Is the voltage between 10 to 12 volts?
Go to Step 25Go to Step 3
51. Turn the ignition ªoffº.
2. Disconnect the J1 (RED) and J3 (BLUE) PCM connectors.
3. Using the J39200 DVOM, check continuity between PCM
terminal J3±E14 and ground.
Is there a continuity?
Go to Step 6Go to Step 8
61. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, check continuity between connector
H53±13 and ground.
Is there a continuity?
Go to Step 7Go to Step 16
71. Disconnect the transmission main case connector M±7.
2. Using the J39200 DVOM, check continuity between the
terminal M7±2(B) and ground.
Is there a continuity?
Go to Step 17Go to Step 18
81. Disconnect the J1 (RED) PCM Connector.
2. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J1±A16 and J3±E14.
Is the resistance within 10±12 ohms?
Go to Step 25Go to Step 9
91. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53±13 and H53±15.
Is the resistance within 10±12 ohms?
Go to Step 16Go to Step 10

Page 2314 of 3573

ISUZU TROOPER 1998 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±69
DTC P1850 Brake Band Apply Solenoid Malfunction (Contd)
StepNo Ye s Action
101. Disconnect the transmission main case connector M±7.
2. Using the J39200

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±69
DTC P1850 Brake Band Apply Solenoid Malfunction (Cont'd)
StepNo Ye s Action
101. Disconnect the transmission main case connector M±7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7±2(B) and M7±4(C).
Is the resistance within 10±12 ohms?
Go to Step 19Go to Step 20
11Using the J39200 DVOM, check continuity between PCM
terminal J1±A16 and ground.
Is there a continuity?
Go to Step 13Go to Step 25
121. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53±13 and H53±15.
Is the resistance within 10±12 ohms?
Go to Step 23Go to Step 14
131. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, check continuity between terminal
H53±13 and ground.
Is there a continuity?
Go to Step 15Go to Step 21
141. Disconnect the transmission main case connector M±7.
2. Using the J39200 DVOM, measure the resistance between
terminals M7±2(B) and M7±4(C).
Is the resistance within 10±12 ohms?
Go to Step 24Go to Step 20
151. Disconnect the transmission main case connector M±7.
2. Using the J39200 DVOM, check continuity between the
terminal M7±2(B) and ground.
Is there a continuity?
Go to Step 17Go to Step 22
16The wiring harness between PCM terminal J3±E14 and
transmission 16±way connector terminal H53±15 is open.
Was a problem found and corrected?
Go to Step 26Ð
17The brake band apply solenoid is faulty, or the internal wiring
harness from the brake band apply solenoid is shorted to ground.
Was a problem found and corrected?
Go to Step 26Ð
18The wiring harness between the transmission 16±way connector
terminal H53±15 and the transmission main case connector
terminal M7±4(C) is shorted to ground.
Was a problem found and corrected?
Go to Step 26Ð
19The wiring harness between the transmission 16±way connector
terminal H53±15 and the transmission main case connector
terminal M7±4(C) is open.
Was a problem found and corrected?
Go to Step 26Ð
20The brake band apply solenoid is faulty, or the internal wiring
harness from the brake band apply solenoid is open.
Was a problem found and corrected?
Go to Step 26Ð
21The wiring harness between the PCM connector terminal J1±A16
and transmission 16±way connector terminal H53±13 is shorted
to ground.
Was a problem found and corrected?
Go to Step 26Ð
22The wiring harness between the transmission 16±way connector
terminal H53±13 and the transmission main case connector
terminal M7±2(B) is shorted to ground.
Was a problem found and corrected?
Go to Step 26Ð

Page 2315 of 3573

ISUZU TROOPER 1998 Service Repair Manual 7A1±70
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P1850 Brake Band Apply Solenoid Malfunction (Contd)
StepNo Ye s Action
23The wiring harness between the PCM connector terminal J1±A16
and the 16±w

Page 2316 of 3573

ISUZU TROOPER 1998 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±71
DTC P1860 TCC Solenoid Electrical
D07RW010
Circuit Description
The PCM allows current to flow through the solenoid coil
according to the duty cycle (percen

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±71
DTC P1860 TCC Solenoid Electrical
D07RW010
Circuit Description
The PCM allows current to flow through the solenoid coil
according to the duty cycle (percentage of ªonº and ªoffº
time). This current flow through the solenoid coil creates
a magnetic field that magnetizes the solid core. The
magnetized core attracts the check ball to seat against
spring pressure. This blocks the exhaust for the TCC
signal fluid and allows 2±3 drive fluid to feed to TCC signal
circuit. The TCC signal fluid pressure acts on the TCC
regulator valve to regulate line pressure and to apply fluid
pressure to the torque converter clutch shift valve. When
the TCC shift valve is in the apply position, regulated
apply fluid pressure is directed through the TCC valve to
apply the torque converter clutch. The TCC solenoid is
used in conjunction with the TCC solenoid to regulate fluid
to the torque converter. The TCC solenoid is attached to
the valve body within the transmission.
This DTC detects a continuous open or short to ground or
ignition in the TCC circuit or the TCC solenoid. This is a
type ªDº DTC.
Conditions For Setting The DTC
Battery voltage is between 10 and 16 volts.
No shift solenoid A DTC P0753.
No shift solenoid B DTC P0758.
Ignition is ªonº, Engine ªrunº.
The PCM commands the solenoid ªonº and the
voltage remains low (zero volts).
The PCM commands the solenoid ªoffº and the
voltage remains high (B+).
All conditions met for 0.25 seconds.
Action Taken When The DTC Sets
Inhibit TCC engagement.The PCM will not illuminate the CHECK TRANS
Lamp.
Conditions For Clearing The MIL/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 ªoffº
long enough to power down the PCM.
Diagnostic Aids
Inspect the wiring for poor electrical connections at
the PCM and at the transmission 16±way connector.
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.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks for voltage to the solenoid.
4. This test checks the ability of the PCM and wiring to
control the ignition circuit.
9. This test checks the resistance of the TCC solenoid
and the internal wiring harness.

Page 2317 of 3573

ISUZU TROOPER 1998 Service Repair Manual 7A1±72
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P1860 TCC Solenoid Electrical
StepActionYe sNo
11. Install the scan tool.
2. With the engine ªonº, turn the ignition switch ªonº.
NOTE: Before cl

7A1±72
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P1860 TCC Solenoid Electrical
StepActionYe sNo
11. Install the scan tool.
2. With the engine ªonº, turn the ignition switch ªonº.
NOTE: Before clearing DTC(s), use the scan tool to record ªFailure
Recordsº for reference, as data will be lost when theªClear Infoº
function is used.
3. Record the DTC ªFailure Recordsº.
Go to Step 2Go to Step 3
2Using the J39200 DVOM, back probe between PCM connector
terminals J2±D2 and J2±C8.
Is the voltage 0 ?
Go to Step 4Go to Step 5
31. Apply brake pedal and select transmission range ªDº.
2. Do a test drive, and increase the vehicle speed to TCC ªonº at
4th.
Does the scan tool display DTC P1860 at TCC ªONº?
Go to Step 9
Go to Diagnostic
Aids
41. Turn the ignition ªoffº.
2. Disconnect the J2 (WHITE) PCM connector.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals J2±D2 and J2±C8.
Is the resistance within 18 ± 20 ohms?
Go to Step 6Go to Step 7
5The wiring harness between PCM connector terminal J2±D2 and
transmission adapter case connector terminal M6±4(A) is shorted
to voltage.
Was a problem found and corrected?
Go to Step 18Go to Step 19
6Intermittent condition.
Check the wiring harness and terminals between PCM connector
J2 and transmission adapter case connector M±6.
Was a problem found and corrected?
Go to Step 18Go to Step 19
71. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53±8 and ground.
Is the resistance within 18 ± 20 ohms?
Go to Step 15Go to Step 8
81. Disconnect the transmission adapter case connector M±6.
2. Using the J39200 DVOM, measure the resistance between
terminal M6±4(A) and ground.
Is the resistance within 18 ± 20 ohms?
Go to Step 16Go to Step 17
91. Turn the ignition ªoffº.
2. Disconnect the J2 (WHITE) PCM connector.
3. Using the J39200 DVOM, measure the resistance between
terminals J2±D2 and J2±C8.
Is the resistance within 18 ± 20 ohms?
Go to Step 18Go to Step 10
101. Disconnect the transmission 16±way connector H±53.
2. Using the J39200 DVOM, measure the resistance between
terminal H53±8 and ground.
Is the resistance within 18±20 ohms?
Go to Step 12Go to Step 11
111. Disconnect the transmission adapter case connector M±6.
2. Using the J39200 DVOM, measure the resistance between
terminal M6±4(A) and ground.
Is the resistance within 18±20 ohms?
Go to Step 13Go to Step 14

Page 2318 of 3573

ISUZU TROOPER 1998 Service Repair Manual TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±73
DTC P1860 TCC Solenoid Electrical (Contd)
StepNo Ye s Action
12The wiring harness between PCM connector terminal J2±D2 and
transmission 16±way connecto

Page 2319 of 3573

ISUZU TROOPER 1998 Service Repair Manual MANUAL TRANSMISSION7B±1
TRANSMISSION
MANUAL TRANSMISSION
CONTENTS
Service Precaution 7B±1. . . . . . . . . . . . . . . . . . . . . .
General Description 7B±2. . . . . . . . . . . . . . . . . . . .

MANUAL TRANSMISSION7B±1
TRANSMISSION
MANUAL TRANSMISSION
CONTENTS
Service Precaution 7B±1. . . . . . . . . . . . . . . . . . . . . .
General Description 7B±2. . . . . . . . . . . . . . . . . . . . .
Diagnosis 7B±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission Assembly 7B±5. . . . . . . . . . .
Transmission and Associated Parts 7B±5. . . . . .
Removal 7B±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 7B±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Oil Seal (Transfer Adapter) 7B±17. . . . . . . . . .
Removal 7B±17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 7B±17. . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmission (AR-5) 7B±18. . . . . . . . . . . . . . . . . . . . .
Disassembled View 7B±18. . . . . . . . . . . . . . . . . . . .
Disassembly 7B±21. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 7B±39. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 7B±41. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 7B±68. . . . . . . . . . . . .
General Specifications 7B±68. . . . . . . . . . . . . . . . .
Torque Specifications 7B±69. . . . . . . . . . . . . . . . . .
Special Tools 7B±72. . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: I F S O E Q U IPPED 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.

Page 2320 of 3573

ISUZU TROOPER 1998 Service Repair Manual 7B±2MANUAL TRANSMISSION
General Description
(6VE1)
A07RW044

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