engine ISUZU TF SERIES 2004 Workshop Manual
[x] Cancel search | Manufacturer: ISUZU, Model Year: 2004, Model line: TF SERIES, Model: ISUZU TF SERIES 2004Pages: 4264, PDF Size: 72.63 MB
Page 4015 of 4264

DIAGNOSIS (JR405E) 7A2-23
4. After choosing the data, click the "Next" button.
5. When all the necessary information is entered, the "details" of software within the database that match the
entered data will appear for confirmation. Click the "Program" switch and then download the new software
onto Tech-2.
6. "Data Transfer" comes on display. The progress of downloading will be displayed on the screen in the form of
bar graph.
7. Upon finishing the data transfer, turn off the power of Tech-2, removing from P/C.
4. Programming of TCM
1. Check to see if batteries are fully charged, while ABS connectors shall be removed from the vehicle.
2. Connect Tech-2 to Vehicle Diagnostic Connectors.
3. Turn on the power of Tech-2 and the title screen comes on display.
4. Turn on the ignition (without allowing the engine to start)
5. On the title screen of Tech-2, push the "Enter" button.
6. Choose "F1: Service Programming System" on the main screen and then choose "F1: Programming ECU".
7. While data is being transferred, "Programming in Progress" will be displayed on the Tech-2 screen.
8. Upon finishing the data transfer, Tech-2 will display "Reprogramming was Successful". Push the "Exit" button
to bring program to completion.
9. Following "Procedure 2: Demand of Data", try over again "Information Obtaining" and check to confirm if the
data has been correctly re-loaded.
10. Upon finishing confirmation, turn off the ignition of the vehicle and then turn off the power of Tech-2,
removing from the vehicle.
Page 4023 of 4264

DIAGNOSIS (JR405E) 7A2-31
CONNECTOR LIST
TCM
No. Connector face No. Connector face
B-23
Green
Meter-A B-73
SilverWeld splice 3 (Earth)
B-24
Green
Meter-B C-2
SilverEngine room-RH ground
B-50
White
Power/3rd start switch C-44
WhiteStop lamp switch
B-54
White
J/B I2 C-56
(4JH1-TC)
ECM-A
B-56
White
J/B I4 C-57
(4JH1-TC)
ECM-B
B-58
Black
Check connector C-94
(6VE1)
(4JH1-TC)
Gray TCM
B-62
White
Ignition switch (IGSUB : G1) C-95
(6VE1)
(4JH1-TC)
WhiteTCM
B-63
White
Ignition switch (IGSUB : G2) C-107
WhiteJ/B E2
B-64
Silver
Weld splice 1 (Illumination) C-109
SilverBody-LH ; ground
B-68
(4JH1TC,
6VE1)
White Immobilizer C/U E-10
SilverEngine; ground
Page 4024 of 4264

7A2-32 DIAGNOSIS (JR405E)
No. Connector face No. Connector face
E-30
(4JH1-TC)
Gray A/T speed sensor H-23
(6VE1)
(4JH1-TC)
WhiteEngine ~ Engine room B
E-31
(4JH1-TC)
Gray Turbine sensor P-1
SilverBattery (+)
E-44
Gray
Vehicle speed sensor P-2
SilverRelay & Fuse box
E-51
(4JH1-TC)
Black Inhibiter switch P-5
SilverBattery (-)
E-54
(4JH1-TC)
Black A/T term ASM P-6
SilverBody earth (Ground)
H-4
(6VE1)
(4JH1-TC)
White Engine ~ Engine room P-10
SilverEngine ground
H-6
White
Engine room ~ INST R-15
Black2-4 WD control unit
H-7
White
Engine room ~ INST
H-18
(RHD)
White Engine room ~ INST
H-22
(6VE1)
(4JH1-TC)
White Engine ~ Engine room C
Page 4025 of 4264

DIAGNOSIS (JR405E) 7A2-33
DIAGNOSIS TROUBLE CODE TABLE
Flash Code
(P-Code)
CHECK TRANS Flash Pattern
Description
CHECK
TRANS
Warning
11 (P0722) Vehicle Speed Sensor No Signal ON
12 (-) Normal -
13 (P0727) ON
Engine Revolution Sensor No
Signal
14 (P0717) Turbine Speed Sensor No Signal ON
15 (P0710) ATF Temperature Sensor FailureOFF
16 (P0560) System Voltage Failure ON
17 (P0705) Inhibitor Switch Failure ON
22 (P1120) Throttle Signal Failure ON
25 (P1875) GND Return Circuit Failure ON
26 (P1853) ON
Low & Reverse Brake Pressure
Switch Failure
27 (P1858) 2-4 Brake Pressure Switch FailureON
28 (P1863) ON
High Clutch Pressure Switch
Failure
31 (P0753) ON
Low & Reverse Brake Duty
Solenoid Failure
32 (P0758) 2-4BrakeDutySolenoidFailure ON
33 (P0763) ON
High Clutch Duty Solenoid Failure
Page 4027 of 4264

DIAGNOSIS (JR405E) 7A2-35
FAIL-SAFEFUNCTION
Fail-Safe Condition
Flash Code
(P-Code)
Description
CHECK
TRANS
Warning
Gear Shift
Solenoid
Line
Pressure
Solenoid
Lock-up
Remark
11
(P0722)
Vehicle peed Sensor No
Signal ON 3rdFix All Stop - Inhibited
13
(P0727)
Engine Revolution Sensor
No Signal ON - - - Inhibited
14
(P0717)
Turbine Speed Sensor No
Signal ON 3rdFix All Stop - Inhibited
15
(P0710)
ATF Temperature Sensor
Failure OFF 3,2,L - - Inhibited*1
16
(P0560)
System Voltage Failure ON 3rdFix All Stop - Inhibited*2
17
(P0705)
Inhibitor Switch Failure ON 3rdFix All Stop - Inhibited
22
(P1120)
Throttle Signal Failure ON 3rdFix All Stop - Inhibited
25
(P1875)
GND Return Circuit
Failure ON 3rdFix All Stop - Inhibited*2
26
(P1853)
Low & Reverse Brake
Pressure Switch Failure ON No Fail-safe Function
27
(P1858)
2-4 Brake Pressure
Switch Failure ON No Fail-safe Function
28
(P1863)
High Clutch Pressure
Switch Failure ON No Fail-safe Function
31
(P0753)
Low & Reverse Brake
Duty Solenoid Failure ON 3rdFix All Stop - Inhibited
32
(P0758)
2-4 Brake Duty Solenoid
Failure ON 3rdFix All Stop - Inhibited
33
(P0763)
High Clutch Duty Solenoid
Failure ON 3rdFix All Stop - Inhibited
34
(P0768)
Low Clutch Duty Solenoid
Failure ON 3rdFix All Stop - Inhibited
35
(P0748)
Line Pressure Solenoid
Failure ON - - Stop -
36
(P1860)
Lock-up Duty Solenoid
Failure ON - - - Inhibited
41
(P0731)
1stGearRatioError ON No Fail-safe Function
42
(P0732)
2ndGearRatioError ON No Fail-safe Function
43
(P0733)
3rdGearRatioError ON No Fail-safe Function
44
(P0734)
4thGearRatioError ON No Fail-safe Function
51
(P1750)
Low & Reverse Brake
Fail-safe Valve Failure ON 3rdFix All Stop - Inhibited
52
(P1755)
2-4 Brake Fail-safe Valve
Failure ON 3rdFix All Stop - Inhibited
-
(P0602)
ECU Programming Error ON No Fail-safe Function
*1: When the engine speed is more than 470 rpm for 10 minuets, the lock-up and gear shift to 4th (over-drive) are
allowed.
*2: In case of fail-safe valve failure, gear shift to 4th (over-drive) is inhibited.
Page 4030 of 4264

7A2-38 DIAGNOSIS (JR405E)
DTC P0727 (Flash Code 13) Engine Revolution Sensor No Signal
RED
TDC
Sensor TCM
A7
C94 (7)
BLK/RED
WHT
C56
(27)
E9
(1)
(2)
(3)
C57 (98)
(90)
(101)
ECM
C56 (ECM-A)
Setting Condition:
The engine speed becomes 0 rpm for 2 seconds while the vehicle is running at the over 40 km/h.
Fail Safe:
Lock-up is inhibited.
Possible Cause:
Crank position sensor malfunction.
Sensor wheel (flywheel) malfunction.
Large sensing gap between speed sensor and sensor wheel (flywheel).
Faulty input signal from crank position sensor to ECM.
Signal wire open circuit or short circuit to battery between ECM A24 and TCM terminal A7 (C94).
Poor connection of each connector.
Reference:
When the engine speed 2000rpm, following signal is outputted.
Measurement terminal: A7 (C94) and B5 (C95)
-AC range by circuit tester: Approximately 6.2V
-Oscilloscope: Following wave form can be found.
Page 4031 of 4264

DIAGNOSIS (JR405E) 7A2-39
Engine Speed Sensor Reference Wave Form
Measurement Terminal: A7 (+) B5(-)
Measurement Scale: 5V/div 10ms/div
Measurement Condition: At engine speed 2000rpm
0V
Page 4032 of 4264

7A2-40 DIAGNOSIS (JR405E)
DTC P0717 (Flash Code 14) Turbine Speed Sensor No Signal
Turbine
Sensor TCM
B3
H23 (9)C95 (3) E31 (2)
(1)
(3)
E10
Key SW
BRN/RED
WHT
BLK BRN/RED
Speed Sensor Turbine Sensor
Setting Condition:
The turbine speed below 300 rpm for 2 seconds while the vehicle is running at the speed over 40 km/h with the
engine speed over 1500 rpm in the D, 3, 2, or L range.
Fail Safe:
When the vehicle is running, the gear position selected at the trouble detection is held and the lock-up is
inhibited.
After the vehicle stopped, all solenoid operations stop (OFF) and the gear is fixed to the 3rd.
Possible Cause:
Turbine speed sensor malfunction.
Sensor wheel (reverse & high clutch drum) malfunction.
Large sensing gap between speed sensor and sensor wheel (reverse & high clutch drum).
Sensor wire open circuit, short circuit to battery or short circuit to ground between turbine speed sensor terminal
1 and TCM terminal B3 (C95).
Sensor wire open circuit or short circuit to ground between turbine speed sensor terminal 2 and power supply
circuit.
Sensor wire open circuit or short circuit to battery between turbine speed sensor terminal 3 and ground circuit.
Poor connection of each connector.
Page 4034 of 4264

7A2-42 DIAGNOSIS (JR405E)
DTC P0710 (Flash Code 15) ATF Temperature Sensor Failure
ATF
Temp.
Sensor
TCM
B4 (+)
B14 (-)
H23 (8)
(3)
C95 (4)
(14)
BLU
Terminal
Assembly
BLU/BLKE54 (2)
(8)
BLU
BLU/BLK
Setting Condition:
The condition in which the voltage of oil temperature sensor is below 0.1V (146 C) and ATF temperature
warning lamp ON in the P or N range lasts for more than 5 minutes.
Or
The vehicle speed exceeds 20 km/h and the voltage of oil temperature sensor exceeds 2.43V (-40 C) for more
than 10 seconds.
Fail Safe:
The lock-up is inhibited, and TCM is controlled ATF temperature 80 C condition as substitute.
When the engine speed is more than 470 rpm for 10 minuets, the lock-up and gear shift to 4th (over-drive) are
allowed.
Possible Cause:
Oil temperature sensor wire open circuit or short circuit.
Oil temperature sensor malfunction.
Power supply wire open circuit, short circuit to battery or short circuit to ground between oil temperature sensor
and TCM terminal B4 (C95).
Ground wire open circuit or short circuit to battery between oil temperature sensor terminal and TCM terminal
B14 (C95).
Poor connection of each connector.
Reference:
Following output voltage and resistance can be measured by circuit tester.
Measurement terminal: B4 (C95) and B14 (C95)
ATF Temperature Output Voltage Resistance ATF Temperature Output Voltage Resistance
20 C 1.55V 2,500 80 C 0.5V 320
40 C 1.08V 1,160 100 C 0.3V 190
60 C 0.7V 590 120 C 0.2V 120
Page 4035 of 4264

DIAGNOSIS (JR405E) 7A2-43
DTC P0560 (Flash Code 16) System Voltage Failure
TCM
A1 (+B)
B5
B15
H23 (15)C95 (5)
(15)
BLK/YEL
BLK
BLK
Battery
C94
(1)
BLK
Setting Condition:
The supply voltage is below 10V and the engine speed exceeds 1000 rpm for more than 1 second.
Fail Safe:
When the vehicle is running, the gear position selected at the trouble detection is held and the lock-up is
inhibited.
After the vehicle stopped, all solenoid operations stop (OFF) and the gear is fixed to the 3rd. (In case of fail-safe
valve failure, gear shift to 4th (over-drive) is inhibited.)
Possible Cause:
Alternator or battery malfunction.
Power supply wire open circuit or short circuit to ground between power supply and TCM terminal A1 (C94).
Ground wire open circuit or short circuit to battery between ground location and TCM terminal B5 (C95) or B15
(C95).
Poor connection of each connector.