key ISUZU TF SERIES 2004 Workshop Manual

7A2-98 DIAGNOSIS (JR405E)
Step Action Yes No
4 Are the quantity, contamination and smell normal?
If the ATF level is
low, replenish up to
the specified level.

Go to Step 5

If ATF is extremely
black and
contaminated and
smells burnt, slip of
the clutch is
supposed.
Overhaul the AT
unit.
5 Inspection of inhibitor switch using a Tech 2 or circuit tester.
When the select lever is operated, is the data display in the Tech 2
correct or voltage at each range correct?

Inhibitor SW

TCM
A2 (P)
A17 (3)
B2 (2)
B10 (N)
B11 (D)
B19 (R)
B21 (L)
C95
(2 )
(10)
(11 )
(19)
(21) Y E L /V IO
RED/BLK
BLUBLK/GRN
Starter Relay
C94
(2 )
(3 )
BH22
(1)
(6)
(4)
(7)
(5)
(2) P
2
R
N
D
3
L
Start SW
PNK/BLU
E51
(2)
(4)
(8)
(5)
(1)
(9)
(6)
(3)
(10)
(7)
(38)
(15)
(3)
(37)
H4PNK/BLK
RED/YEL Y E L /V IO
BLK/GRN
PNK/BLK RED/BLK
BLU RED/YEL
PNK/BLU
BLK/WHT
BLK
BLK BLK/WHT Key Switch WHT
WHT
ICU (W/ Immobilis e r)
Ground (W/O Immobilis e r)
TCM terminal
RangeA2 B19 B10 B11 B17 B2 B21
P10 –
14.5V-- - - - -
R-10 –
14.5V-- ---
N--10 –
14.5V----
D - - - 10 –
14.5V---
3----10 –
14.5V--
2-----10 –
14.5V-
L------10 –
14.5V
Go to Step 6
Adjust the inhibitor
switch.

7A2-118 DIAGNOSIS (JR405E)
Step Action Yes No
6 Inspection of inhibitor switch using a Tech 2 or circuit tester.
Inspect the output voltage and throttle opening signal of the
throttle position sensor using a Tech 2 or circuit tester.

Inhibitor SW

TCM
A2 (P)
A17 (3)
B2 (2)
B10 (N)
B11 (D)
B19 (R)
B21 (L)
C95
(2 )
(10)
(11 )
(19)
(21) Y E L /V IO
RED/BLK
BLUBLK/GRN
Starter Relay
C94
(2 )
(3 )
BH22
(1)
(6)
(4)
(7)
(5)
(2) P
2
R
N
D
3
L
Start SW
PNK/BLU
E51
(2)
(4)
(8)
(5)
(1)
(9)
(6)
(3)
(10)
(7)
(38)
(15)
(3)
(37)
H4PNK/BLK
RED/YEL Y E L /V IO
BLK/GRN
PNK/BLK RED/BLK
BLU RED/YEL
PNK/BLU
BLK/WHT
BLK
BLK BLK/WHT Key Switch WHT
WHT
ICU (W/ Immobilis e r)
Ground (W/O Immobilis e r)
TCM terminal
RangeA2 B19 B10 B11 B17 B2 B21
P10 –
14.5V-- - - - -
R-10 –
14.5V-- ---
N--10 –
14.5V----
D - - - 10 –
14.5V---
3----10 –
14.5V--
2-----10 –
14.5V-
L------10 –
14.5V
Go to Step 7
Adjust the inhibitor
switch.
7 Is a voltage value in proportion to the throttle opening output?




TPSTCM
A16
C56
(28)C94
(16) RED/ WHT
C56
(49)
(38)
(57)
(69)ECM
A47 (GND)
A35 (Out put )
A26
A55 (+5V)
A69 (I dl e SW)
Go to Step 8
Repair the defect or
replace.

DIAGNOSIS (JR405E) 7A2-119
Step Action Yes No
8 Inspect the output signal of the speed sensor using a Tech 2 or
circuit tester.
Is the data display in the Tech 2 correct or output voltage correct
in the circuit tester?


Speed
SensorTCM
B13
H23
(4)C95
(13)E30
(2)
(1)
(3)
E10
Key SW
YEL/RED WHT
BLKYEL/RED
TCM terminal
ConditionB13
20km/h at L range in 1st gear Approx. 6.5V (AC range)Go to Step 9
Repair the defect or
replace.
9 Check of power supply to and earth of TCM.
Are the power supply and earth proper?



TCM
A1 (+B)
B5
B15
H23
(15)C95
(5)
(15) BLK/YEL
BLK BLK Battery
C94
(1)
BLK
Go to Step 10
Check the power
source harness and
earth harness (bolt
tightening to the
body).
10 Is the stall revolution correct in D, 3, 2 and L range? Refer the
STALL TEST section in this manual.
Go to Step 11
Repair the defect or
replace.
11 Is the line pressure correct? Refer the LINE PRESSURE TEST
section in this manual.
Trouble in the AT
assembly or control
valve.
Repair the defect or
replace.

7A2-122 DIAGNOSIS (JR405E)
Step Action Yes No
4 Inspection of inhibitor switch using a Tech 2 or circuit tester.
When the select lever is operated, is the data display in the Tech
2 correct or voltage at each range correct?
Inhibitor SW

TCM
A2 (P)
A17 (3)
B2 (2)
B10 (N)
B11 (D)
B19 (R)
B21 (L)
C95
(2 )
(10)
(11 )
(19)
(21) Y E L /V IO
RED/BLK
BLUBLK/GRN
Starter Relay
C94
(2 )
(3 )
BH22
(1)
(6)
(4)
(7)
(5)
(2) P
2
R
N
D
3
L
Start SW
PNK/BLU
E51
(2)
(4)
(8)
(5)
(1)
(9)
(6)
(3)
(10)
(7)
(38)
(15)
(3)
(37)
H4PNK/BLK
RED/YEL Y E L /V IO
BLK/GRN
PNK/BLK RED/BLK
BLU RED/YEL
PNK/BLU
BLK/WHT
BLK
BLK BLK/WHT Key Switch WHT
WHT
ICU (W/ Immobilis e r)
Ground (W/O Immobilis e r)
TCM terminal
RangeA2 B19 B10 B11 B17 B2 B21
P10 –
14.5V-- - - - -
R-10 –
14.5V-- ---
N--10 –
14.5V----
D - - - 10 –
14.5V---
3----10 –
14.5V--
2-----10 –
14.5V-
L------10 –
14.5V
Go to Step 5
Adjust the inhibitor
switch.
5 Inspect the output voltage and throttle opening signal of the
throttle position sensor using a Tech 2 or circuit tester.
Is a voltage value in proportion to the throttle opening output?



TPSTCM
A16
C56
(28)C94
(16) RED/ WHT
C56
(49)
(38)
(57)
(69)ECM
A47 (GND)
A35 (Out put )
A26
A55 (+5V)
A69 (I dl e SW)
Go to Step 6
Repair the defect or
replace.

DIAGNOSIS (JR405E) 7A2-125
Step Action Yes No
5 Inspection of inhibitor switch using a Tech 2 or circuit tester.
When the select lever is operated, is the data display in the Tech
2 correct or voltage at each range correct?
Inhibitor SW

TCM
A2 (P)
A17 (3)
B2 (2)
B10 (N)
B11 (D)
B19 (R)
B21 (L)
C95
(2 )
(10)
(11 )
(19)
(21) Y E L /V IO
RED/BLK
BLUBLK/GRN
Starter Relay
C94
(2 )
(3 )
BH22
(1)
(6)
(4)
(7)
(5)
(2) P
2
R
N
D
3
L
Start SW
PNK/BLU
E51
(2)
(4)
(8)
(5)
(1)
(9)
(6)
(3)
(10)
(7)
(38)
(15)
(3)
(37)
H4PNK/BLK
RED/YEL Y E L /V IO
BLK/GRN
PNK/BLK RED/BLK
BLU RED/YEL
PNK/BLU
BLK/WHT
BLK
BLK BLK/WHT Key Switch WHT
WHT
ICU (W/ Immobilis e r)
Ground (W/O Immobilis e r)
TCM terminal
RangeA2 B19 B10 B11 B17 B2 B21
P10 –
14.5V-- - - - -
R-10 –
14.5V-- ---
N--10 –
14.5V----
D - - - 10 –
14.5V---
3----10 –
14.5V--
2-----10 –
14.5V-
L------10 –
14.5V
Go to Step 6
Adjust the inhibitor
switch.
6 Inspection of ATF oil thermo sensor.
Is the ATF oil temperature sensor terminal voltage correct?
After running using the Tech 2 data display function, is the ATF
temperature higher than 10C?

ATF
Te m p .
SensorTCM
B4 (+)
B14 (-)
H23
(8 )
(3 )C95
(4)
(14) BLU Te rm i n a l
Assembly
BLU/BLKE54
(2 )
(8 ) BLU
BLU/BLK
TCM terminal
Temperature (deg. C)
B4 (Output voltage)
201.55
401.08
600.7
800.5
1000.3
1200.2Go to Step 7
Repair the defect or
replace.
7 Is the stall revolution correct in D, 3, 2 and L range? Refer the
STALL TEST section in this manual.
Go to Step 8
Repair the defect or
replace.
8 Is the line pressure correct? Refer the LINE PRESSURE TEST
section in this manual. Trouble in the AT
assembly or control
valve.
Repair the defect or
replace.

7A2-128 DIAGNOSIS (JR405E)
Step Action Yes No
4 Are the quantity, contamination and smell normal?
If the ATF level is
low, replenish up to
the specified level.

Go to Step 5
If ATF is extremely
black and
contaminated and
smells burnt, slip of
the clutch is
supposed.
Overhaul the AT
unit.
5 Inspection of inhibitor switch using a Tech 2 or circuit tester.
When the select lever is operated, is the data display in the Tech
2 correct or voltage at each range correct?
Inhibitor SW

TCM
A2 (P)
A17 (3)
B2 (2)
B10 (N)
B11 (D)
B19 (R)
B21 (L)
C95
(2 )
(10)
(11 )
(19)
(21) Y E L /V IO
RED/BLK
BLUBLK/GRN
Starter Relay
C94
(2 )
(3 )
BH22
(1)
(6)
(4)
(7)
(5)
(2) P
2
R
N
D
3
L
Start SW
PNK/BLU
E51
(2)
(4)
(8)
(5)
(1)
(9)
(6)
(3)
(10)
(7)
(38)
(15)
(3)
(37)
H4PNK/BLK
RED/YEL Y E L /V IO
BLK/GRN
PNK/BLK RED/BLK
BLU RED/YEL
PNK/BLU
BLK/WHT
BLK
BLK BLK/WHT Key Switch WHT
WHT
ICU (W/ Immobilis e r)
Ground (W/O Immobilis e r)
TCM terminal
RangeA2 B19 B10 B11 B17 B2 B21
P10 –
14.5V-- - - - -
R-10 –
14.5V-- ---
N--10 –
14.5V----
D - - - 10 –
14.5V---
3----10 –
14.5V--
2-----10 –
14.5V-
L------10 –
14.5V
Go to Step 6
Adjust the inhibitor
switch.

DIAGNOSIS (JR405E) 7A2-155
No. Wire
Color Pin Name Input /
OutputConnected toMeasurement
Item Measurement
Condition StandardInspection
Point at
Trouble
Related
harness
Engine
Speed
Sensor A7 BLK/
RED Engine Speed Sensor Input ECM Voltage (Wave
form) At 2000rpm.
Circuit tester
(+) to A7 pin,
(-) to B5 pin. Pulse
generated (At
AC range
approx. 6.2V)
ECM
A8 - - - - - - - -
A9 - - - - - - - -
Related
harness
Speed
sensor
Speed meter
A10 BLK/
YEL Vehicle Speed Sensor Out (2WD Only) Output Speed meter Voltage (Wave
form) At run in L
range in 1st
gear 20 km/h.
Circuit tester
(+) to A10 pin,
(-) to B5 pin. Pulse
generated (At
AC range
approx. 6.5V)
TCM
At switch
pushed Less than 2VRelated
harness
A11 GRN/
WHT 3rd Start Select Switch Input 3rd start switch Voltage
At switch off 10 – 14.5V 3rd start
switch
At 4L Less than 2VRelated
harness
A12 BLU/
WHT 4L Mode Switch (4WD Only) InputTransfer control
unit Voltage
At other than
4L 10 – 14.5V 4L switch
A13 - - - - - - - -
A14 - - - - - - - -
A15 - - - - - - - -
At fully close Off duty 10%Related
harness
ECM A16 RED/
WHT Throttle Position Sensor Input ECM Wave form
(140Hz Duty
signal) *1
At fully open Off duty 90%Throttle
position
sensor
At 3 range 10 – 14.5V Related
harness
A17 BLK/
GRN 3 Range Switch Input Inhibitor switch Voltage
At other than
3 range Less than 2VInhibitor
switch
At key switch
ON 10 – 14.5V Related
harness
A18 YEL/
BLK DIAG Switch InputData link
connector Voltage
At short circuit
of DIAG
switch Less than 2VRelated
harness
At lamp OFF 10 – 14.5V Related
harness A19 ORG/
BLU A/T OIL TEMP Indicator Lamp OutputAT OIL TEMP
indicator lamp Voltage
At lamp ON Less than 2V Lamp
At lamp OFF 10 – 14.5V Related
harness A20 GRN/
YEL CHECK TRANS Indicator Lamp OutputCHECK TRANS
indicator Lamp Voltage
At lamp ON Less than 2V Lamp
At lamp OFF 10 – 14.5V Related
harness A21 PNK POWER DRIVE Indicator Lamp OutputPOWER DRIVE
indicator lamp Voltage
At lamp ON Less than 2V Lamp
A22 - - - - - - - -
A23 - - - - - - - -

DIAGNOSIS (JR405E) 7A2-157
No. Wire
Color Pin Name Input /
OutputConnected toMeasurement
Item Measurement
Condition StandardInspection
Point at
Trouble
At other than
R range, L
range 1st gear More than 10
V Related
harness
B12 YEL Low & Reverse Brake Pressure Switch InputLow & reverse
brake pressure
switch Voltage
At R range, L
range 1st gear Less than 2VPressure
switch
Related
harness
B13 YEL/
RED Vehicle Speed Sensor InputVehicle speed
sensor Voltage (Wave
form) At run in L
range in 1 st
gear 20 km/h.
Circuit tester
(+) to B13 pin,
(-) to B5 pin. Pulse
generated (At
AC range
approx. 6.8V)Vehicle
speed sensor
B14 BLU/
BLK ATF Thermo Sensor Ground - ATF thermo
sensor Continuity Normally Continuity Related
harness
B15 BLK Ground - Ground Voltage Normally Less than 2VRelated
harness
B16 - - - - - - - -
At lock-up.
Circuit tester
(+) to B17 pin,
(-) to B5 pin. Pulse
generated (At
AC range
approx. 2.2 -
9.0V) Related
harness
B17 BLK Lock-up Duty Solenoid OutputLock-up duty
solenoid Voltage (Wave
form)
At unlock-up.
Circuit tester
(+) to B17 pin,
(-) to B5 pin. Pulse
generated (At
AC range
approx. 1.0 -
2.0V) Duty solenoid
At key switch
ON 10 – 14.5V Related
harness
B18 WHT V ign (Ignition Power Supply) Input Key switch Voltage
At key switch
OFF Less than 2V Fuse
At R range 10 – 14.5V Related
harness
B19 RED/
YEL R Range Switch Input Inhibitor switch Voltage
At other than
R range Less than 2VInhibitor
switch
At other than
3rd or 4th
gear More than 10
V Related
harness
B20 WHT/
BLK High Clutch Oil Pressure Switch InputHigh clutch
pressure switch Voltage
At 3rd or 4th
gear Less than 2VPressure
switch
At L range 10 – 14.5V Related
harness
B21 PNK/
BLK L Range Switch Input Inhibitor switch Voltage
At other than
L range Less than 2VInhibitor
switch
B22 GRY/
RED Ground Return Output Shift solenoid Continuity Normally Continuity Related
harness
At N range 10 – 14.5V Related
harness
B23 VIO Line Pressure Solenoid OutputLine pressure
solenoid Voltage
At D range
stall Less than 2V Solenoid

7A2-158 DIAGNOSIS (JR405E)
No. Wire
Color Pin Name Input /
OutputConnected toMeasurement
Item Measurement
Condition StandardInspection
Point at
Trouble
At key switch
ON 10 – 14.5V Related
harness
B24 WHT V ign (Ignition Power Supply) Input Key switch Voltage
At Key switch
OFF Less than 2V Fuse

7.14ms 7.14ms


Time Time
0.714ms 6.426ms
Voltage
Off duty 10% =Throttle Position 0%
Voltage
Off duty 90% =Throttle Position 100%

Engine Speed Sensor Reference Wave Form
Measurement Terminal: A7 (+) B5 (-)
Measurement Scale: 5V/div 10ms/div
Measurement Condition: At engine speed 2000rpm
0V
Vehicle Speed Sensor Output Reference Wave Form
Measurement Terminal: A10 (+) B5 (-)
Measurement Scale: 5V/div 50ms/div
Measurement Condition: Vehicle speed 20km/h at L range
in 1st gear
0V
Turbine Sensor Reference Wave Form
Measurement Terminal: B3 (+) B5 (-)
Measurement Scale: 5V/div 500micro sec/div
Measurement Condition: Vehicle speed 20km/h at L range
in 1st gear
0V
Vehicle Speed Sensor Reference Wave Form
Measurement Terminal: B13 (+) B5 (-)
Measurement Scale: 5V/div 5ms/div
Measurement Condition: Vehicle speed 20km/h at L range
in 1st gear
0V