Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 637
7A1–48 AUTOMATIC TRANSMISSION (4L30-E)
CHECK TRANS INDICATOR
Find CHECK TRANS indicator and verify if it is:
A.
Flashing: GOTO DIAGNOSTIC CHECK.
B.
Staying on: GOTHROUGH CHECK TRANS CHECK.
C.
Is never ON when the ignition key is turned on:
GOTHROUGH CHECK TRANS CHECK
D.
Is ON during 2 to 3 seconds at ignition but OFF after:
Normal operation. No DTC or malfunction.
CHECK
TRANS
821LW003
AUTOMATIC TRANSMISSION (4L30-E) 7A1–49
DIAGNOSTIC CHECK
This test determines if the transmission itself or its
inputs or outputs connections or sensors are failing.
IF you have a scan tool TECH2:
NO: Use the CHECK TRANS Indicator diagnostic
codes GOTO FLASHING CODES.
YES:
1.
Connect the TECH2: GOTHROUGH TECH2
CONNECTION.
2.
Turn on the ignition but not the engine.
3.
Push “F2” on TECH2 to see the Diagnostic Trouble
Code (DTC):
4.
IF you have DTC?
YES: write down all code numbers and do the DTC
CHECK
NO: the DTC can not help you finding the problem.
(1) GOTHROUGH “CHECK TRANS” CHECK
(2) IF it is flashing and the flash is 0.2 seconds ON
and 0.2 seconds OFF, this means that you should
have a DTC stored. Please recheck GOTO
DIAGNOSTIC CHECK and if you find the same
problem GOTO TCM MEM-CAL REPLACEMENT.
(3) IF the CHECK TRANS indicator is not flashing
GOTO WITHOUT DTC SET.
Normal
Abnormal
ON
OFF
IGN Key ON
3 Sec.
(Lamp check)
ON
OFF
IGN Key ON
3 Sec.
(Lamp check)
0.2 Sec.
(2.5 Hz)
3.2 Sec.
0.2 Sec.
7A1–50 AUTOMATIC TRANSMISSION (4L30-E)
“CHECK TRANS” CHECK
1.
CASE it is ON during 2 to 3 seconds at ignition (or
when the engine is cranked) but it is OFF after. The
indicator is working normally GOTO DIAGNOSTIC
CHECK.
2.
CASE it is flashing and the flash is 0.2 seconds ON
and 0.2 seconds OFF always when ignition is on
(engine cranked or not). This means that there is a
malfunction. GOTO DIAGNOSTIC CHECK.
3.
CASE the CHECK TRANS indicator is flashing always
and the flash is 0.4 seconds ON and 0.4 second OFF.
(1) This means that the Transmission Control Module
(TCM) is in flashing code mode. This mode is only
used for service. This mode is set when the
terminal 11 of data link connector C-102 is set to
ground. To go out of this mode.
(2) Check if terminal 11 of data link connector C-102
is shorted to ground. (Voltage is about 0 volts
when there is a short to ground instead of 5
volts).
(3) Check if TCM terminal D16 has the same problem.
(4) Remove the short circuit to ground due to wiring
problems.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACEMENT.
ON
OFF
IGN Key ON
3 Sec.
(Lamp check)
ON
OFF
IGN Key ON
3 Sec.
(Lamp check)
0.2 Sec.
(2.5 Hz)
3.2 Sec.
0.2 Sec.
Normal
Abnormal
826RV061
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9
AUTOMATIC TRANSMISSION (4L30-E) 7A1–51
TRANSMISSION
CONTROL
MODULE
(TCM)
CHECK TRANS
INDICATOR
CONTROL
DIAGNOSTIC
INPUT
CHECK TRANS
(METER)
B-24
8
B-24
2
FUSE
CB-5
15A
FUSE BOX
ORN/BLU
H-26
7
D16(16)
C-95
C10(10)
C-95
YEL/BLK
11
4
5
DATA LINK
CONNECTOR
(C-102)
ORN/BLU
4.
CASE it is staying ON always when Ignition is ON.
(1) This means that connection between the Lamp
and the TCM is shorted to ground.
(2) Verify if instrument panel terminal 8 of connector
B-24 is shorted to ground.
(3) Verify if the TCM connector C-95 terminal C10 is
shorted to ground.
(4) Verify that the instrument panel terminal 2 of con-
nector B-24 is connected to battery.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACEMENT.
5.
CASE it is staying OFF with the ignition ON (engine
OFF).
(1) This means that connection between the lamp
and the TCM is shorted to battery or opened.
(2) Verify if instrument panel terminal 8 of connector
B-24 is shorted to battery or open.
(3) Verify if the TCM connector C-95 terminal C10 is
shorted to battery or open.
(4) Verify that the instrument panel terminal 2 of
connector B-24 is connected to battery. If not
check the fuses and the connections voltage.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACEMENT.
D07LW004
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