Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1739

DIAGNOSIS 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 "CHECK

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 C5

(15A) is burnt out.

Verify connection and wire between the TCM A20 terminal

and lamp open circuit and meter fuse C5 (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

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)

Trouble 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) fuse SBF-4 (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).

12

14

14

14

32

32

32

DIAGNOSIS 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.

7A2-10 DIAGNOSIS

NOTE:
Be sure to check that the power is not supplied to the
Tech 2 when attaching or removing the PCMCIA card.