fuse ISUZU TF SERIES 2004 Workshop Manual

7A2-48 TRANSMISSION CONTROL SYSTEM (AW30–40LE) (V6 3.5L)

Step Action Value(s) YES NO
6 Measure the resistance of wire by the J39200 DMM.

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

3. Install a fused jumper wire from terminal E83-1
and E83-2 on the mission harness.
Does the scan tool indicate less than specified
value ? less than 1
Go to Step 8 Go to Step 7
7 Repair an open circuit.
Was the problem found ? — Verify repair —
8 Replace the TCM
IMPORTANT ; The replacement TCM must be
programmed. (Refer to SPS for procedure.)
Is the action complete ? — Verify repair —

DIAGNOSIS (JR405E) 7A2-7
CHECK TRANS INDICATOR & SELF DIAGNOSIS



CHECK
TRANS

Warning to the driver

"CHECK TRANS" is ON during 3 seconds at key switch ON
position.

When trouble has occurred to electrical components,
"CHECK TRANS" lamp is blinked (1.25 Hz) even during
driving to warn the driver.

The trouble is recorded by trouble code in TCM. When
temporary trouble code has been canceled, the "CHEC
K
TRANS" lamp stops blinking. This blinking can be stopped
by setting the key off. But the trouble code remains
memorized in TCM.










Key SW ON
ON


OFF



3 Sec.
(Lamp Check)

Illumination Pattern at Normal Condition
NOTE:
1. If the "CHECK TRANS" lamp is staying ON always at key
switch ON position, this means that connection between the
lamp and TCM is shorted to ground.
Verify connection and wire between the TCM A20 terminal
and lamp short to ground.
2. If the "CHECK TRANS" lamp is staying OFF at key switch
ON position (Engine off), this means that connection
between the lamp and TCM is opened or meter fuse (15A)
is burnt out.
Verify connection and wire between the TCM A20 terminal
and lamp open circuit and meter fuse (15A).











Key SW ON 0.4 Sec.
ON

OFF
3 Sec.




3.2 Sec.






0.4 Sec.
(Lamp Check)

Illumination Pattern at Trouble Condition







Off Acc On V Acc
CHECK TRANS
Meter
Meter Fuse C5 (15A)
Fuse Box & Relay Box
(Cabin)






TCM

 


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





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

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