2002 ISUZU AXIOM ad blue

6E±355
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0502 ± VSS Circuit Low Input

 
StepNo Ye s Value(s) Action
101. Ignition ªOFFº.
2. Disconnect the MAF sensor. The connector
attaches the VSS wires from the transmission
harness to the left-side engine harness.
3. Disconnect the black 16-way connector.
4. Select a terminal adapter from kit J 35616 that can
be used with a jumper to supply B+ to the blue wire
with a yellow tracer (transmission side of the
connector).
5. Use another terminal adapter to attach a voltmeter
to the light-green wire with a white tracer (next to the
wire in the previous step.)
6. Disconnect the blue connector next to the black
16-way connector, and locate the black/red tracer
wire at one corner of the blue connector. The
black/red wire is the VSS ground. Use a terminal
adapter to attach a jumper to ground to the
black/red VSS ground wire at the transmission side
of the blue connector.
7. Raise the rear wheels off the ground with
transmission in neutral.
Does the DVM toggle back and forth between 0.6 V and
10 V as the wheels (and driveshaft) are rotated?
ÐGo to Step 11Go to Step 12
11Replace the VSS.
Is the action complete?
ÐVerify repairÐ
12Check for an open or short between the PCM and the
speedometer.
Was a problem found?
ÐVerify repairGo to Step 13
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
On-Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
ANd also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
ÐVerify repairÐ

6E±543
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
2. Connect the ION sensing module connectors as
shown in the illustration.
060RY00003
Legend
(1) Green Color Connector
(2) Blue Color Connector
3. Connect the negative battery cable.
Mass Air Flow (MAF) Sensor
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the electrical connector from the MAF
sensor.
TS23740
3. Loosen the clamps which secure the intake air duct
and the air cleaner to the MAF sensor.4. Remove the intake air duct from the MAF sensor.
5. Remove the MAF sensor from the air cleaner.
TS23781
Installation Procedure
1. Install the MAF sensor on the air cleaner with the
clamp.
2. Install the intake air duct and the clamp on the MAF
sensor.
TS23781
3. Tighten the clamps to secure the MAF sensor to the
intake air duct and the air cleaner.
4. Connect the MAF electrical connector.
5. Connect the negative battery cable.

7A±61 AUTOMATIC TRANSMISSION (4L30±E)
22. Second clutch end play measurement
1. Install the J±23085±A Selective washer gauging
tool (with spacer ring) on the case flange and
against the intermediate shaft.
2. Position the inner shaft of the gauging tool against
the thrust surface of the second clutch hub.
3. Tighten thumb screw. Remove the tool.
4. Fit the spacer ring on the inner shaft of the tool.
5. Measure the gap, and select the appropriate
washer as shown in the chart.
Selective Thrust Washer
Gap: mm(in)Color
1.53 ± 1.63 (0.060 ± 0.064)Yellow
1.72 ± 1.82 (0.068 ± 0.072)Red
1.91 ± 2.01 (0.075 ± 0.079)Black
2.10 ± 2.20 (0.083 ± 0.087)Natural
2.29 ± 2.39 (0.090 ± 0.094)Green
2.48 ± 2.58 (0.098 ± 0.102)Blue
FOLLOWING THE PROCEDURE SHOULD
RESULT IN FINAL END±PLAY FROM 0.36 mm TO
0.79 mm (0.014 in TO 0.031 in)
247R100001
247RS004
23. Inspect fourth clutch piston seals and replace if
necessary.

Lubricate J±38554 fourth clutch piston fitter and
install it on fourth clutch piston (19).

Install fourth clutch piston (19) in adapter case (20).

Remove fitter.
252RS003

7A±63 AUTOMATIC TRANSMISSION (4L30±E)
33. Install fourth clutch retainer (31) with the notch facing
up and positioned towards valve body surface.
252RW004
34. Overdrive clutch end play measurement
1. Install the J±23085±A selective washer gauging
tool on the adapter case flange and against the
input shaft.
2. Position the inner shaft of the tool against the
thrust surface of the overrun clutch housing.
3. Tighten thumb screw. Remove the tool.
4. Measure gap. Select appropriate size washer as
shown in the chart.
5. Set selective thrust washer aside.
Selective Thrust Washer
Gap: mm(in)Color
1.53 ± 1.63 (0.060 ± 0.064)Yellow
1.72 ± 1.82 (0.068 ± 0.072)Red
1.91 ± 2.01 (0.075 ± 0.079)Black
2.10 ± 2.20 (0.083 ± 0.087)Natural
2.29 ± 2.39 (0.090 ± 0.094)Green
2.48 ± 2.58 (0.098 ± 0.102)Blue
FOLLOWING THE PROCEDURE SHOULD
RESULT IN FINAL END±PLAY FROM 0.1 mm TO
0.8 mm (0.004 in TO 0.03 in)
252RS005
252RS006
35. Install selective washer (32).
NOTE: Use petroleum jelly to hold selective washer in
place.
36. Install gasket (33).
37. Install converter housing and oil pump assembly (34)
to adapter case.

Fit and tighten seven outer 13 mm screws.
Torque: 39 Nwm (29 lb ft)

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±65

When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.

An open ignition feed circuit can cause multiple DTCs
to set.

A shift solenoid B DTC P0758 could also set with a
shift solenoid A electrical failure.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This test checks for power to the shift solenoid A
from the ignition through the PCM.5. This test measures the resistance of the component.
8. This test checks the function of the shift solenoid A
and the transmission internal wiring harness.
Shift Solenoid Status Chart
Gear
Shift solenoid AShift solenoid B
1stOFFON
2ndONON
3rdONOFF
4thOFFOFF
DTC P0753 Shift Solenoid A Electrical
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emission in
Engine section
21. 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 ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
Were DTCs P0753, P0758, P1860 set?
Go to Step 3
Go to Diagnostic
Aids
31. Turn the ignition ªonº.
2. Using the J39200 DVOM, measure the voltage between PCM
connector terminals E35±43 and E34±1 (GND).
Is the voltage within 10±12 volts?
Go to Step 4Go to Step 5
41. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM connector.
3. Turn the ignition ªonº.
4. Using the J39200 DVOM, measure the voltage between PCM
connector terminals E34±5 and ground.
Is the voltage within 10 ± 12 volts?
Go to Step 10Go to Step 5
51. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM connector.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals E35±43 and E34±5.
Is the resistance within 18 ± 20 ohms?
Go to Step 6Go to Step 8
61. Disconnect the E-34 (BLUE) and E-35 (RED) PCM
connectors.
2. Using the J39200 DVOM, check a continuity between PCM
terminals E34±5 and ground.
Is there a continuity?
Go to Step 11Go to Step 7
7Using the J39200 DVOM, check a continuity between E-35 (RED)
PCM terminal 43 and ground.
Is there a continuity?
Go to Step 12Go to Step 9

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±73
DTC P0758 Shift Solenoid B Electrical
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emission in
Engine section
21. 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 ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
Were DTCs P0753, P0758, P1860 set?
Go to Step 4Go to Step 3
31. The engine ªonº.
2. Apply brake pedal and select transmission range ªDº.
3. Press and hold down the winter switch and select transmission
mode ªwinterº.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 7
Go to Diagnostic
Aids
41. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM
connectors.
3. Turn the ignition ªonº.
4. Using the J39200 DVOM, measure the voltage between PCM
connector terminals E35±31 and E35±1.
Is the voltage within 10 ± 12 volts?
Go to Step 13Go to Step 5
51. Turn the ignition ªoffº.
2. Using the J39200 DVOM, measure the resistance between
PCM connector terminals E35±31 and E35±43.
Is the resistance within 18 ± 20 ohms?
Go to Step 14Go to Step 6
61. Disconnect the transmission main case connector E±42.
2. Using the J39200 DVOM, measure the resistance between
terminals E42±6(A) and E42±2(D).
Is the resistance within 18 ± 20 ohms?
Go to Step 15Go to Step 16
71. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM
connectors.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals E35±31 and E35±43.
Is the resistance within 18 ± 20 ohms?
Go to Step 8Go to Step 10
8Using the J39200 DVOM, check a continuity between PCM
connector terminal E35±31 and ground.
Is there a continuity?
Go to Step 17Go to Step 9
9Using the J39200 DVOM, check a continuity between PCM
connector terminal E35±43 and ground.
Is there a continuity?
Go to Step 18Go to Step 11
101. Disconnect the transmission main case connector E-42.
2. Using the J39200 DVOM, measure the resistance between
terminals E42±6(A) and E42±2(D).
Is the resistance within 18 ± 20 ohms?
Go to Step 19Go to Step 20

7A1±74
TRANSMISSION CONTROL SYSTEM (4L30±E)
DTC P0758 Shift Solenoid B Electrical (Cont'd)
StepNo Ye s Action
11Check every connection of the PCM.
Was a problem found and corrected?
Go to Step 22Go to Step 12
121. Connect the E-34 (BLUE) and E-35 (RED) PCM connectors to
the PCM.
2. Turn the ignition ªonº, the engine ªonº.
3. Repeat Step 3.
Does the scan tool display DTC P0758 at 3rd gear?
Go to Step 21
Go to Diagnostic
Aids
13The wiring harness between PCM connector terminal
E35±31 and transmission main case terminal E42±6(A) is shorted
to voltage.
Was a problem found and corrected?
Go to Step 22Ð
14The PCM internal terminal E35±31 is shorted to voltage.
Replace the PCM. Refer to
Powertrain Control Module (PCM) in
Automatic Transmission (4L30±E) section.
Is the replacement complete?Go to Step 22Ð
15The wiring harness between PCM connector and transmission
main case 7-way connector is shorted.
Was a problem found and corrected?
Go to Step 22Ð
16The shift solenoid B is faulty, or the internal wiring harness from
the shift solenoid B is shorted.
Was a problem found and corrected?
Go to Step 22Ð
17The wiring harness between PCM connector terminal
E35±31 and transmission main case connector terminal
E42±6(A) is shorted to ground.
Was a problem found and corrected?
Go to Step 22Ð
18The wiring harness between PCM connector terminal E35±43
and transmission main case connector terminal E42±2(D) is
shorted to ground.
Was a problem found and corrected?
Go to Step 22Ð
19The wiring harness between PCM connector terminal E35±31
and transmission main case connector terminal E42±6(A), or
between PCM connector terminal E35±43 and main case
connector terminal E42±2(D) is open.
Was a problem found and corrected?
Go to Step 22Ð
20The internal wiring harness from the shift solenoid B is open, or
the shift solenoid B is faulty.
Was a problem found and corrected?
Go to Step 22Ð
21Replace the PCM.
Is the replacement complete?
Go to Step 22Ð
221. After the repair is complete, use the scan tool to select ªDTCº,
then ªClear Infoº function and operate the vehicle under the
following conditions:

The shift solenoid B is commanded ªonº and voltage drops to
zero.

The shift solenoid B is commanded ªoffº and voltage
increases to B+.
2. Review the scan tool ªDTC Infoº.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to
Step 1
Repair verified
Exit DTC table

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±77
DTC P1850 Brake Band Apply Solenoid Malfunction
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emission in
Engine section
21. 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 ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
Were DTCs P0753, P0758 set?
Go to Step 3Go to Step 4
3Using the J39200 DVOM, back probe between PCM connector
terminals E35±43 and E35±1.
Is the voltage between 10 to 12 volts?
Go to Step 5Go to Step 6
41. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM connector.
3. Using the J39200 DVOM, measure the resistance between
PCM connector terminals E35±43 and E35±10.
Is the resistance within 10±12 ohms?
Go to Step 10Go to Step 11
5Using the J39200 DVOM, back probe between PCM connector
terminals E35±10 and E35±1.
Is the voltage between 10 to 12 volts?
Go to Step 19Go to Step 4
61. Turn the ignition ªoffº.
2. Disconnect the E-34 (BLUE) and E-35 (RED) PCM connector.
3. Using the J39200 DVOM, check continuity between PCM
terminal E35±43 and ground.
Is there a continuity?
Go to Step 7Go to Step 8
71. Disconnect the transmission main case connector E-42.
2. Using the J39200 DVOM, check continuity between the
terminal E42±7(B) and ground.
Is there continuity?
Go to Step 13Go to Step 14
81. Disconnect the E-34 (BLUE) and E-35 (RED) PCM Connector.
2. Using the J39200 DVOM, measure the resistance between
the PCM connector terminals E35±43 and E35±10.
Is the resistance within 10±12 ohms?
Go to Step 19Go to Step 9
91. Disconnect the transmission main case connector E-42.
2. Using the J39200 DVOM, measure the resistance between
the terminals E42±7(B) and E42±2(D).
Is the resistance within 10±12 ohms?
Go to Step 15Go to Step 16
10Using the J39200 DVOM, check continuity between PCM
terminal E35±10 and ground.
Is there continuity?
Go to Step 12Go to Step 19
111. Disconnect the transmission main case connector E-42.
2. Using the J39200 DVOM, measure the resistance between
the terminals E42-7(B) and E42-2(D).
Is the resistance within 10±12 ohms?
Go to Step 18Go to Step 16