2007 ISUZU KB P190 diagnostic menu

6E-160 Engine Control System (4JH1)
DTC P0500 (Symptom Code B) (Flash Code 24)
Circuit Description
The vehicle speed sensor (VSS) is used by the engine
control module (ECM) and speedometer, which
generates a speed signal from the transmission output
shaft. The VSS has the following circuits.
• Ignition voltage feed circuit
• VSS signal circuit
• VSS low reference circuit
The VSS uses a hall effect element. It interacts with the
magnetic field created by the rotating magnet and
outputs square wave pulse signal. The 12 volts
operating supply from the Meter fuse (except 2W D with
A/T) or Back Up fuse (2W D with A/T). The ECM
calculates the vehicle speed by the VSS. If the vehicle
is 2W D with automatic transmission, VSS signals are
sent from the transmission control module (TCM). If the
ECM detects VSS signals are not generated, this DTC
will set.
Condition for Running the DTC
• The ignition switch is ON.
• The engine speed is higher than 3600 RPM.
• The fuel injection quantity is more than 41 mg/strk.
Condition for Setting the DTC
• The ECM detects that the vehicle speed is lowe
r
than 1.5 km/h (1 MPH) for 60 seconds.
Action Taken When the DTC Sets
• The ECM illuminates the malfunction indicato
r
lamp (MIL) when the diagnostic runs and fails.
Condition for Clearing the MIL/DTC
• The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids
• Electrical or magnetic interference may affect
intermittent condition.
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.

DTC P0500 (Symptom Code B) (Flash Code 24)
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or Engine Control Module (ECM)
Connector End Views

Chart for 2WD with A/T
Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “JR405E Automatic Transmission” in the system selection menu.
5. Monitor the Read Diagnostic Trouble Code (DTC) Info As Stored By ECU with the scan tool.
Does the transmission control module (TCM) DTC
P0722 set? 

Go to Applicable
DTC in Automatic Transmission Section Go to Step 3
3 1. Drive the vehicle. 2. Select the data display function of engine control module (ECM).
3. Observe the Vehicle Speed parameter with the scan tool.
Does the Vehicle Speed parameter indicate correct
vehicle speed? 

Go to Diagnostic Aids Go to Step 4
4 1. Turn OFF the ignition. 2. Disconnect the TCM harness connector.
3. Turn ON the ignition, with the engine OFF.
4. Intermittently jump the VSS signal output circuit (pin A-10 of C-94 connector) with a test lamp that
is connected to a known good ground while
monitoring the Vehicle Speed parameter with the
scan tool.
Does the scan tool indicate any vehicle speed when
the circuit is intermittently pulled to ground? 

Go to Step 8 Go to Step 5

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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-211
Step Action Value(s) Yes No
5 Replace the neutral switch. Refer to Neutral Switch
Replacement in Transmission Section.
Did you complete the replacement? 

Go to Step 7 
6 Important: Replacement ECM must be
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement? 

Go to Step 7 
7 1. Reconnect all previously disconnected harness
connector(s).
2. Clear the DTCs with the scan tool.
Important: Following conditions must be met two
consecutive driving cycles before clear with the scan
tool. (One driving cycle: Ignition switch ON > Engine
run > Vehicle run > Ignition switch OFF for 10
seconds) • The engine speed is higher than 1500 RPM
• The vehicle speed is higher than 63 km/h
(39 MPH)
• The clutch pedal is released
• Other than neutral
3. Turn ON the ignition, with the engine OFF.
4. Observe the Neutral Switch parameter with the scan tool while shift to neutral and other
positions.
Does the scan tool indicate ON when the position is
neutral and OFF when other than the neutral? 

Go to Step 8 Go to Step 3
8 Observe the DTC Information with the scan tool. Are there any DTCs that you have not diagnosed?  Go to Diagnostic
Trouble Code (DTC) List System OK

Chart for A/T
Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “JR405E Automatic Transmission” in the system selection menu.
5. Monitor the Read Diagnostic Trouble Code (DTC) Info As Stored By ECU with the scan tool.
Does the transmission control module (TCM) DTC
P0705 set? 

Go to Applicable
DTC in Automatic Transmission Section Go to Step 3
3 1. Install the scan tool. 2. Turn ON the ignition, with the engine OFF.
3. Observe the Neutral Switch parameter with the scan tool while shift to P or N and other
positions.
Does the scan tool indicate ON when the position is
P or N and OFF when other than the P or N? 

Go to Diagnostic Aids Go to Step 4

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ISUZU KB P190 2007

6E-218 Engine Control System (4JH1)
DTC P1611 (Symptom Code A) (Flash Code 56)
Circuit Description
The electronically erasable programmable read onl
y
memory (EEPROM) memorize immobilizer securit
y
code and secret key for communication with the
immobilizer control unit (ICU). If the engine control
module (ECM) detects wrong security code is
programmed into the ECM, this DTC will set.
Condition for Setting the DTC
• The ECM detects wrong immobilizer security code
is programmed.
Action Taken When the DTC Sets • The ECM illuminates the malfunction indicato
r
lamp (MIL) when the diagnostic runs and fails.
• The desired fuel injection quantity is set 0 mg/strk.
Condition for Clearing the MIL/DTC
• The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids • Programming ECM with wrong security code ma
y
set this DTC.
• ECM with wrong specification may set this DTC.

DTC P1611 (Symptom Code A) (Flash Code 56)


Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “Immobilizer” in the system selection menu.
5. Monitor the Diagnostic Trouble Code (DTC) Info Ordered By Priority with the scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B? 

Go to Applicable
DTC in Immobilizer Section Go to Step 3
3 Monitor the DTC Information with the scan tool. Does the DTC fail this ignition? 

Go to Step 4 Go to Diagnostic
Aids
4 Program or reprogram immobilizer function into the engine control module (ECM). Refer to Programming
Engine Control Module (ECM) in immobilizer section.
Did you find and correct the condition? 

Go to Step 6 Go to Step 5
5 Important: Replacement ECM must be
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement? 

Go to Step 6 
6 1. Clear the DTCs with the scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition? 

Go to Step 2 Go to Step 7
7 Observe the DTC Information with the scan tool. Are there any DTCs that you have not diagnosed?  Go to Diagnostic
Trouble Code (DTC) List System OK


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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-219
DTC P1612 (Symptom Code A) (Flash Code 56)
Circuit Description
The engine control module (ECM) communicates with
the immobilizer control unit (ICU) to execute immobilize
r
function. The ECM sends request signal to the ICU. The
ECM receives response signal from the ICU. Both
communication signals are carried out through the
Keyword 2000 serial data link. If the ECM receives
wrong response signal from the ICU, this DTC will set.
Condition for Setting the DTC
• The ECM receives wrong immobilizer response
signal from the ICU.
Action Taken When the DTC Sets • The ECM illuminates the malfunction indicato
r
lamp (MIL) when the diagnostic runs and fails.
• The desired fuel injection quantity is set 0 mg/strk.
Condition for Clearing the MIL/DTC
• The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids • Non programmed ECM may set this DTC.
• Electrical or magnetic interference may affect
intermittent condition.
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
Notice: • Keyword 2000 serial data link circuit problem may
cause this DTC set. The scan tool will not
communicate. Refer to scan tool Does Not
Communicate with Keyword 2000 Device in this
section.
• ECM with wrong specification may set this DTC.

DTC P1612 (Symptom Code A) (Flash Code 56)

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “Immobilizer” in the system selection menu.
5. Monitor the Diagnostic Trouble Code (DTC) Info Ordered By Priority with the scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B? 

Go to Applicable
DTC in Immobilizer Section Go to Step 3
3 Monitor the DTC Information with the scan tool. Does the DTC fail this ignition? 

Go to Step 4 Go to Diagnostic
Aids
4 Program or reprogram immobilizer function into the engine control module (ECM). Refer to Programming
Engine Control Module (ECM) in immobilizer section.
Did you find and correct the condition? 

Go to Step 6 Go to Step 5
5 Important: Replacement ECM must be
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement? 

Go to Step 6 
6 1. Clear the DTCs with the scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition? 

Go to Step 2 Go to Step 7
7 Observe the DTC Information with the scan tool. Are there any DTCs that you have not diagnosed?  Go to Diagnostic
Trouble Code (DTC) List System OK

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ISUZU KB P190 2007

6E-220 Engine Control System (4JH1)
DTC P1613 (Symptom Code A) (Flash Code 56)
Circuit Description
The engine control module (ECM) communicates with
the immobilizer control unit (ICU) to execute immobilize
r
function. The ECM sends request signal to the ICU. The
ECM receives response signal from the ICU. Both
communication signals are carried out through the
Keyword 2000 serial data link. If the ECM does not
detect response signal from the ICU, this DTC will set.
Condition for Setting the DTC
• The ECM does not receive the immobilize
r
response signal from the ICU.
Action Taken When the DTC Sets • The ECM illuminates the malfunction indicato
r
lamp (MIL) when the diagnostic runs and fails.
• The desired fuel injection quantity is set 0 mg/strk.
Condition for Clearing the MIL/DTC • The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids
• Non programmed ECM may set this DTC.
• Transponder key problem may set this DTC.
• Antenna coil problem may set this DTC.
• Electrical or magnetic interference may affect
intermittent condition.
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
Notice: • Keyword 2000 serial data link circuit problem ma
y
cause this DTC set. The scan tool will not
communicate. Refer to scan tool Does Not
Communicate with Keyword 2000 Device in this
section.
• ECM with wrong specification may set this DTC.

DTC P1613 (Symptom Code A) (Flash Code 56)


Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “Immobilizer” in the system selection menu.
5. Monitor the Diagnostic Trouble Code (DTC) Info Ordered By Priority with the scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B? 

Go to Applicable
DTC in Immobilizer Section Go to Step 3
3 Monitor the DTC Information with the scan tool. Does the DTC fail this ignition? 

Go to Step 4 Go to Diagnostic
Aids
4 Program or reprogram immobilizer function into the engine control module (ECM). Refer to Programming
Engine Control Module (ECM) in immobilizer section.
Did you find and correct the condition? 

Go to Step 6 Go to Step 5
5 Important: Replacement ECM must be
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement? 

Go to Step 6 
6 1. Clear the DTCs with the scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition? 

Go to Step 2 Go to Step 7
7 Observe the DTC Information with the scan tool. Are there any DTCs that you have not diagnosed?  Go to Diagnostic
Trouble Code (DTC) List System OK


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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-221
DTC P1614 (Symptom Code A) (Flash Code 56)
Circuit Description
The engine control module (ECM) communicates with
the immobilizer control unit (ICU) to execute immobilize
r
function. The ECM sends request signal to the ICU. The
ECM receives response signal from the ICU. Both
communication signals are carried out through the
Keyword 2000 serial data link. If ICU receives wrong
immobilizer response signal from the transponder key,
this DTC will set.
Condition for Setting the DTC
• The ICU receives wrong immobilizer response
signal from the transponder key.
Action Taken When the DTC Sets
• The ECM illuminates the malfunction indicato
r
lamp (MIL) when the diagnostic runs and fails.
• The desired fuel injection quantity is set 0 mg/strk.
Condition for Clearing the MIL/DTC • The ECM turns OFF the MIL when the diagnostic
runs and does not fail.
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids • Non programmed ICU may set this DTC.
• Transponder key problem may set this DTC.
• ECM with wrong specification may set this DTC.

DTC P1614 (Symptom Code A) (Flash Code 56)

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check-
Engine Controls? 
Go to Step 2 Go to Diagnostic
System Check-
Engine Controls
2 1. Install the scan tool. 2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Select the “Immobilizer” in the system selection menu.
5. Monitor the Diagnostic Trouble Code (DTC) Info Ordered By Priority with the scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B? 

Go to Applicable
DTC in Immobilizer Section Go to Step 3
3 Monitor the DTC Information with the scan tool. Does the DTC fail this ignition? 

Go to Step 4 Go to Diagnostic
Aids
4 Program or reprogram immobilizer function into the immobilizer control unit (ICU). Refer to Programming
Immobilizer Control Unit (ICU) in immobilizer
section.
Did you find and correct the condition? 

Go to Step 6 Go to Step 5
5 Important: Replacement ICU must be programmed.
Replace the ICU. Refer to Immobilizer Control Unit
(ICU) Replacement in the immobilizer section.
Did you complete the replacement? 

Go to Step 6 
6 1. Clear the DTCs with the scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with the scan tool.
Did the DTC fail this ignition? 

Go to Step 2 Go to Step 7
7 Observe the DTC Information with the scan tool. Are there any DTCs that you have not diagnosed?  Go to Diagnostic
Trouble Code (DTC) List System OK


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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-277
• DO NOT disturb the tool harnesses while
programming. If an interruption occurs during the
programming procedure, programming failure o
r
ECM damage may occur.
• If you are performing the Pass-Thru programming
procedure using a notebook computer without the
power cord, ensure that the internal battery is full
y
charged.

Service Programming System (SPS)
(Remote Procedure)
The Remote Service Programming System (SPS)
method is a three-step process that involves the
following procedures: 1. Connecting the scan tool to the vehicle and obtaining the information from the engine control
module (ECM).
2. Connecting the scan tool to the terminal and downloading a new calibration file from the terminal
into the scan tool memory.
3. Reconnecting the scan tool to the vehicle and uploading the new calibration file into the ECM.
Performing the Remote Procedure 1. Connect the scan tool to the vehicle and obtain the ECM information using the following procedure:
Important:
Ensure the ECM is installed in the vehicle and the batter
y
is fully charged before programming. a. Connect the scan tool to the vehicle data linkconnector (DLC), with the engine and the scan
tool OFF.
b. Turn ON the scan tool.
c. Press Enter at the title screen.
d. Turn ON the ignition, with the engine OFF.
e. Select Service Programming System at the Main Menu.
f. Select Request Info.
g. If there is already stored in the scan tool, the existing data is displayed on the screen. The
scan tool asks user to keep existing data Keep
Data or Continue to request new vehicle
information from the ECM. If there is no data in
the scan tool, it will immediately start vehicle
identification.
h. Enter the vehicle description by following the on- screen instructions based on stamped VIN o
r
affixed VIN plate on the vehicle.
i. During obtaining information, the scan tool is
receiving information from any modules at the
same time. But only ECM information is
displayed on the screen.
j. Turn OFF all accessories and select Continue.
k. Verify that the correct VIN is entered on the scan tool. If the VIN is incorrect, write down the
correct VIN.
2. Turn OFF the scan tool.
3. Disconnect the scan tool from the vehicle.
4. Turn OFF the ignition.
5. Transfer the data from the terminal to the scan tool using the following procedure:
Important:
The TIS supports service programming with the scan
tool scan tool only. a. Connect the scan tool to the terminal.
b. Launch the TIS application at the terminal.
c. Select the Service Programming System at the main screen.
d. Highlight the following information on the Selec
t
Diagnostic Tool and Programming Process
screen: • Select Diagnostic Tool-Select scan tool.
• Select Programming Process-Identif
y
whether an existing ECM is being
reprogrammed or an ECM is being
replaced with a new one.
• Select ECU Location-Select Vehicle.
e. Select Next.
f. Verify the connections on the Preparing fo
r
Communication screen and select Next.
g. Verify the VIN on the Validate Vehicle Identification Number (VIN) screen and selec
t
Next.
Important:
If the ECM is replaced to new one, VIN does no
t
displayed. Input correct VIN reading from stamped VIN
or affixed VIN plate on the vehicle. If the ECM from
another vehicle is installed, input correct VIN by same
way.
h. Highlight Engine on the System Type screen and select Next, if requested.
i. Complete the following information based on the service ID plate on the Validate Vehicle
Data screen until Next is highlighted: • Model
• Model Year
• Engine
• Type of Transmission

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6E–70 ENGINE DRIVEABILITY AND EMISSIONS
Tech 2 Operating Flow Cart (Start Up)
Select “2.XL L4 HV240” in Vehicle Identification menu and the following table is shown in the Tech 2 screen.
System Selection Menu
F0: Powertrain
F1: Chassis
F3: Body
Select “(TF/UC)”.
Vehicle Identification
4JH1-TC Bosch
4JH1-T Denso
2.XL L4 HV240
3.5L V6 6VE1 Hitachi
AW30-40LE
AT JR405E
Select “F0: Powertrain”.
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
Select “2.XL L4 HV240”.
Vehicle Identification
(UB) Trooper, Bighorn
(UE) Rodeo,/Amigo, Wizard/Mu
(TF/UC) LUV, Frontier, LAO-Rodeo
(TBR)
(N*) ELF, NPR, NQR

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