Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Service manual — part 113
6E–56
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6E–57
DIAGNOSIS WITH Tech 2
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 “DIAGNOSIS
AIDS”.
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) (3), RS232
loop back connector (No. 3000112) (2) and
PCMCIA card (No. 3000117) (1).
2. Tech 2 Connection
• Check the key switch is turn OFF.
• Insert the PCMCIA card (1) into the Tech 2 (5).
• Connect the SAE 16/19 adapter (3) to the DLC
cable (4).
• Connect the DLC cable (4) to the Tech 2 (5).
• Connect the SAE 16/19 adapter (3) 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.
NOTE: Be sure to check that the power is not supplied
to the Tech 2 when attaching or removing the PCMCIA
card.
6E–58
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
TECH 2 OPERATING FLOW CART (START UP)
Select “4JH1-TC Bosch” in Vehicle Identification menu and the following table is shown in the Tech 2 screen.
Main Menu
F0: Diagnostic
F1: Service Programming System (SPS)
F2: View Capture Data
F3: Tool Option
F4: Download/ Upload Help
Press “ENTER” key.
Vehicle Identification
(3) 2003
(2) 2002
(1) 2001
(Y) 2000
(X) 1999
(W) 1998
Select “F0: Diagnostic”.
Select “(3) 2003”or later.
Press (ENTER) to Continue
System Selection Menu
F0: Powertrain
F1: Chassis
F3: Body
Select “(TF/UC)”.
Vehicle Identification
4JH1-TC Bosch
4JA1-TC Bosch
4JH1-T Denso
3.5L V6 6VE1 Hitachi
AW30-40LE
A/T JR405E
Select “F0: Powertrain”.
Select “4JH1-TC Bosch”.
Vehicle Identification
(UB) Trooper, Bighorn
(UE) Rodeo,/Amigo, Wizard/Mu
(TF/UC) LUV, Frontier, LAO-Rodeo
(TBR)
(N*) ELF, NPR, NQR
4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6E–59
F0: Diagnostic Trouble Code
The purpose of the “Diagnostic Trouble Codes” mode is
to display stored trouble code in the ECM.
When “Clear DTC Information” is selected, a “Clear
DTC Information”, warning screen appears.
This screen informs you that by cleaning DTC's “all
stored DTC information in the ECM will be erased”.
After clearing codes, confirm system operation by test
driving the vehicle.
Symptom Code:
This number or alphabet means identification of the
malfunction. Each DTC includes plural symptoms, such
as DTC P0100 has four kinds of symptom code (7), (9),
(B) and (C). DTC chart (check procedure) is separated
depending on the symptom code.
F1: Data Display
The purpose of the “Data Display” mode is to
continuously monitor data parameters.
The current actual values of all important sensors and
signals in the system are display through F1 mode.
See the “Typical Scan Data” section.
F2: Snapshot
“Snapshot” allows you to focus on making the condition
occur, rather than trying to view all of the data in
anticipation of the fault.
The snapshot will collect parameter information around
a trigger point that you select.
F3: Miscellaneous Test:
The purpose of “Miscellaneous Test” mode is to check
for correct operation of electronic system actuators.
F4: Programming (Factory Use Only)
The purpose of “Programming” is to program VIN in the
ECM and lock the programmed data.
F0: Diagnostic Trouble Codes
F0: Read DTC Infor As Stored By ECU
F1: Clear DTC Information
F1: Data Display
F2: Snapshot
F3: Miscellaneous Test
F0: Lamps
F0: Check Light
F1: Glow Time Telltale Test
F1: Relays
F0: Glow Time Relay Test
F2: Engine Speed (RPM) Control
F4: Programming
F0: Program VIN
F1: Lock ECU
Read DTC Infor As Stored By ECU
P0100 Present
(7) Mass Air Flow (MAF) Sensor
Voltage Supply Circuit High Input
DTC No.
Symptom Code
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