display ISUZU TF SERIES 2004 Workshop Manual

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-33

perform a diagnostic function by displaying DTC(s)
and aid the technician in making repairs.

7A2-34 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)

TCM Diagnostic Trouble Codes
The following table lists the diagnostic trouble codes supported by this vehicle application. If any DTCs not listed here
are displayed by a scan tool, the scan tool data may by faulty; notify the scan tool manufacture of any DTCs
displayed that are not included in the following table.
DTC
NUMBER FLASH
CODE DTC NAME
“CHECK
TRANS"
P0560 25 System Voltage Error —
P0602 63 Transmission Control Module (TCM) Programming Error —
P0705 17 Transmission Range Sensor Circuit Malfunction ON
P0712 15 Transmission Oil Temperature Sensor Circuit Low Input ON
P0713 16 Transmission Oil Temperature Sensor Circuit Hight Input ON
P0717 14 Input Speed Sensor Signal Error ON
P0722 11 Output Speed Sensor Signal Error ON
P0743 33 Torque Converter Clutch Electrical ON
P0748 35 Pressure Control Solenoid Electrical ON
P0753 31 Shift Solenoid S1 Electrical ON
P0758 32 Shift Solenoid S2 Electrical ON
P1767 67 ECM CAN (Control Area Network) Invalid ON
P1790 61 Transmission Control Module ROM Checksum Error ON
P1791 62 Transmission Control Module RAM Error ON
U2104 65 CAN (Control Area Network) BUSS OFF ON

TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L) 7A2-41

DTC P0705 (FLASHING CODE 17) Transmission Range Sensor Circuit
Malfunction


Step Action Value(s) YES NO
1
Was the powertrain On-Board Diagnostics (OBD)
System check performed ? — Go to Step 2 Go to OBD
System Check
2

1. Install the scan tool.

2. Key “ON"

3. Review and record scan tool data.
4. Operate the vehicle with in scan tool data.
Does the scan tool indicate DTC P0705 ? — Go to Step 3 Refer to
Diagnostic Aids
3 Measure the voltage shifting the select lever every
position, between TCM connector terminals and
ground which performed selecting to every position.

1. Key “OFF"
2. Disconnect the TCM connector.

3. Key “ON"

4. Connect the DMM to the TCM connector terminal
and ground.
Is the displayed voltage at every position normal ? 7—16V Go to Step 7 Go to Step 4
4 Measure the voltage between terminal the neutral
start switch and ground.

1. Key“OFF"
2. Disconnect the neutral start switch connector.

3. Key“ON"

4. Connect the J39200 DMM to the each terminal of
the neutral start switch connector E79-3 and
ground.
If the problem found repair as necessary.
Was the problem found? 7—16V Verify repair Go to Step 5
5 Measure the resistance shifting the select lever to
every position, between terminal neutral start switch
connector E79-3 and E79other terminal.

1. Key“OFF"

2. Disconnect the neutral start switch connector.
3. Key“ON"

4. Connect the DMM to the each terminal of the
neutral start switch connector E79-3 and E79-5 or
E79-2 or E79-6 E79-8 or E79-7 or E79-9 or E79-
10.
If the problem found repair as necessary.
Was the problem found? Less than
1


Verify repair Go to Step 6

DIAGNOSIS (JR405E) 7A2-1
SECTION 7A2
DIAGNOSIS
TABLE OF CONTENTS
PAGE
BASIC TROUBLE SHOOTING..................................................................................................7A2-6
CHECK TRANS INDICATOR & SELF DIAGNOSIS..............................................................7A2-7
DIAGNOSIS WITH TECH 2........................................................................................................7A2-9
TECH 2 CONNECTION .................................................................................................. 7A2-9
TECH 2 OPERATING FLOW CHART (START UP)..............................................................7A2-10
TYPICAL SCAN DATA................................................................................................................7A2-13
MISCELLANEOUS TEST...........................................................................................................7A2-14
INTERMITTENT DIAGNOSIS....................................................................................................7A2-16
SNAPSHOT DISPLAY WITH TIS 2000....................................................................................7A2-17
SERVICE PROGRAMMING SYSTEM (SPS) ................................................................. 7A2-21
CIRCUIT DIAGRAM.....................................................................................................................7A2-24
PART LOCATION........................................................................................................................7A2-26
CONNECTOR LIST.....................................................................................................................7A2-31
DIAGNOSIS TROUBLE CODE TABLE...................................................................................7A2-33
FAIL-SAFE FUNCTION..............................................................................................................7A2-35
DTC P0722 (FLASH CODE 11) VEHICLE SPEED SENSOR NO SIGNAL......................7A2-36
DTC P0727 (FLASH CODE 13) ENGINE REVOLUTION SENSOR NO SIGNAL............7A2-38
DTC P0717 (FLASH CODE 14) TURBINE SPEED SENSOR NO SIGNAL......................7A2-40
DTC P0710 (FLASH CODE 15) ATF TEMPERATURE SENSOR FAILURE....................7A2-42
DTC P0560 (FLASH CODE 16) SYSTEM VOLTAGE FAILURE........................................7A2-43
DTC P0705 (FLASH CODE 17) INHIBITOR SWITCH FAILURE........................................7A2-44
DTC P1120 (FLASH CODE 22) THROTTLE SIGNAL FAILURE........................................7A2-46
DTC P1875 (FLASH CODE 25) GND RETURN CIRCUIT FAILURE.................................7A2-47
DTC P0753 (FLASH CODE 31) LOW & REVERSE BRAKE DUTY
SOLENOID FAILURE................................................................................................................7A2-48
DTC P0758 (FLASH CODE 32) 2-4 BRAKE DUTY SOLENOID FAILURE......................7A2-51
DTC P0763 (FLASH CODE 33) HIGH CLUTCH DUTY SOLENOID FAILURE................7A2-54
DTC P0768 (FLASH CODE 34) LOW CLUTCH DUTY SOLENOID FAILURE................7A2-57

7A2-8 DIAGNOSIS (JR405E)


Data Link Connector Short Circuit
Self-diagnosis code (Flash code) display

The stored trouble codes can be identified by shorting the
terminal No. 11 and No. 4 or 5 (ground) of data link
connector with a lead wire.

Indication Method:
1. Terminal No. 11 and No. 4 or 5 (ground) of data link
connector are short circuited.
2. Turn the key switch to the ON position.
3. In case no trouble code existence, normal code (12) is
indicated repeatedly.









0.4 Sec 0.4 Sec
.

ON

OFF




3.2 Sec.


1.2 Sec.




3.2 Sec.


0.4 Sec 0.4 Sec
.
ON

OFF


3.2 Sec.


1.2 Sec.




3.2 Sec.


Self -diagnosis Start
Normal Code (12)
Troubl e Code (32)

Flash Code Illumination Pattern
4. In case the plural trouble codes have occurred at a time,
each codes are indicated three rimes in numerical order.

Trouble Code Clear Method:
If you have Tech 2:
Follow the procedure "DIAGNOSIS WITH TECH 2" in this
manual.
If you have no Tech 2:
Remove ECM (B) slow blow fuse (30A) for at least 10 seconds.

NOTE:
If you clear the DTC you will not be able to read any codes
recorded during the last occurrence.
To use the DTC again to identify a problem, you will need
to reproduce the fault or the problem. This may require a
new test drive or just turning the key switch on (this
depends on the nature of the fault).



12141414323232





DIAGNOSIS (JR405E) 7A2-9
DIAGNOSIS WITH TECH 2
In this JR405E transmission, troubleshooting can be performed for electrical faults using the Tech 2 scan tool.
If the "CHECK TRANS" lamp blinks, or if an electrical fault in the transmission may probably exit, check trouble
codes using the Tech 2 scan tool.
In the diagnostic procedures described in this manual, first repair the faulty positions indicated by trouble code in
order of numbers and then perform troubleshooting for the faulty positions that are not indicated by trouble code.
For correct troubleshooting, it is necessary to first repair the trouble codes of lower order numbers, then to repair
the trouble codes of higher order numbers in sequence.

If no codes are set:

Refer to F1: Data Display and identify the electrical faults that are not indicated by trouble code.

Refer to "SYMPTOM DIAGNOSIS".

If codes are set:
1. Record all trouble codes displayed by Tech 2 and check id the codes are intermittent.
2. Clear the codes.
3. Drive the vehicle for a test to reproduce the faulty status.
4. Check trouble codes again using the Tech 2.
5. If no codes is displayed by test driving, the fault is intermittent. In this case, refer to "INTERMITTENT
DIAGNOSIS".
6. If a code is present, refer to DTC Chart for diagnosis.
7. Check trouble codes again using the Tech 2.





TECH 2 CONNECTION
Tech 2 scan tool is used to electrically diagnose the automatic
transmission system and to check the system. The Tech 2
enhances the diagnosis efficiency though all the
troubleshooting can be done without the Tech 2.
1. Configuration of Tech 2

Tech 2 scan tool kit (No. 7000086), Tech 2 scan tool
(No. 7000057) and DLC cable (No. 3000095).

SAE 16/19 adapter (No. 3000098) (1), RS232 loop back
connector (No. 3000112) (2) and PCMCIA card (No.
3000117) (3).




2. Tech 2 Connection

Check the key switch is turn OFF.

Insert the PCMCIA card (1) into the Tech 2 (4).

Connect the SAE 16/19 adapter (2) to the DLC cable (3).

Connect the DLC cable (3) to the Tech 2 (4).

Connect the SAE 16/19 adapter (2) to the data link
connector of the vehicle.

Turn the key switch of the vehicle ON and press the
"PWR" key of the Tech 2.

Check the display of the Tech 2.

7A2-12 DIAGNOSIS (JR405E)
F0: Diagnostic Trouble Code
F0: Read DTC Infor As Stored By ECU
F1: Clear DTC Information
F1: Data Display
F2: Snapshot
F3: Miscellaneous Test
F0: Lamp
F0: Power Lamp Test
F1: 3rd Start Lamp Test
F2: AT Oil Temperature Lamp Test
F3: Transmission Check Light Test
F1: Solenoids
F0: Low & Reverse Brake Solenoid
F1: 2-4 Brake Solenoid
F2: High Clutch Solenoid
F3: Low Clutch Solenoid
F4: Line Pressure Solenoid
F5: Lock Up Duty Solenoid
F4: Programming
F0: Program VIN
F1: Lock ECU

F0: Diagnostic Trouble Code
The purpose of the "Diagnostic Trouble Codes" mode is to
display stored trouble code in the TCM.
When "Clear DTC Information" is selected, a "Clear DTC
Information", warning screen appears. This screen informs you
that by cleaning DTC's "all stored DTC information in the TCM
will be erased".
After clearing codes, confirm system operation by test driving
the vehicle.

F1: Data Display
The purpose of the "Data Display" mode is to continuously
monitor data parameters.
The current actual values of all important sensors and signals
in the system are display through F1mode.
See the "Typical Scan Data" section.

F2: Snapshot
"Snapshot" allows you to focus on making the condition occur,
rather than trying to view all of the data in anticipation of the
fault. The snapshot will collect parameter information around a
trigger point that you select.

F3: Miscellaneous Test:
The purpose of "Miscellaneous Test" mode is to check for
correct operation of electronic system actuators.

F4: Programming (Factory Use Only):
The purpose of "Programming" is to program VIN in the ECM
and lock the programmed data.

7A2-16 DIAGNOSIS (JR405E)
INTERMITTENT DIAGNOSIS
If the Tech 2 displays any codes as intermittent, or if after a test drive any codes does not reappear, the problem is
most likely a faulty electrical connection or loose wiring.
Terminals should always be the prime suspect.
Intermittent rarely occur in sophisticated electronic components such as the TCM.
When an intermittent problem is encountered, check suspect circuits for:

Poor terminal to wire connection.

Terminals not fully seated in the connector body.

Improperly formed or damaged terminals.

Loose, dirty or damaged terminals.
Any time you have an intermittent in more than one circuit, check whether the circuits share a common ground
connection.

Pinched or damaged wires.

Electric interference.
Check for improperly installed electrical options, such as light, radios, etc.

Use the F2: Snapshot mode of the Tech 2 to help isolate the cause of an intermittent fault. The snapshot mode will
record information before and after the problem occurs. Set the snapshot to "Trigger" on the suspected code or, if
you notice the reported symptom during test drive, trigger the snapshot manually.
After the snapshot has been triggered, command the Tech 2 to play back the flow of data recorded from each of the
various sensors. Sings of intermittent fault in a sensor circuit are a sudden unexplainable jump in data values out of
the normal range.

DIAGNOSIS (JR405E) 7A2-17
SNAPSHOT DISPLAY WITH TIS2000 (For Snapshot Data Analysis)
Procedures for transferring and displaying Tech2 snapshot data by using TIS2000 [Snapshot Upload] function is
described below.
Snapshot data can be displayed with [Snapshot Upload] function included in TIS2000.
By analyzing these data in various methods, trouble conditions can be checked.
Snapshot data is displayed by executing the three steps below shown:


1. Record the snapshot data, in Tech2.
2. Transfer the snapshot data to PC.
After recording the snapshot in Tech2, transfer the data from Tech2 to PC by the below procedures.
1. Start TIS2000.
2. Select [Snapshot Upload] on the TIS2000 start screen.
3. Select [Upload from trouble diagnosis tool (transfer from diagnosis tester)] or click the corresponding icon of
the tool bar.
4. Select Tech2, and transfer the recorded snapshot information.
5. Select the transferred snapshot.
6. After ending transfer of the snapshot, data parameter list is displayed on the screen.

7A2-18 DIAGNOSIS (JR405E)


3. Snapshot data is displayed with TIS2000 [Snapshot Upload] function.
Snapshot is stored in the PC hard disk or floppy disk, and can be displayed any time.
Stored snapshot can be displayed by the below procedures.
1. Start TIS2000.
2. Select [Snapshot Upload] on the TIS2000 start screen.
3. Select [Open the existing files] or click the corresponding icon of the tool bar.
4. Select the transferred snapshot.
5. Open the snapshot, to display the data parameter list on the screen.
Graph display
Values and graphs (Max. 3 graphs):
1. Click the icon for graph display. [Graph Parameter] window opens.
2. Click the first graph icon of the window upper part, and select one parameter from the list of the window lower
part. Selected parameter is displayed nest to the graph icon. Graph division can be selected in the field on the
parameter right side.
3. Repeat the same procedures with the 2nd and 3rd icons.
4. After selecting all parameters to be displayed (Max. 3 parameters), click [OK] button.