2007 ISUZU KB P190 Immobilizer

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-347
Repair Instructions
Engine Control Module (ECM)
Replacement
Description
The following A - G steps provide an overview
procedure to replace and reprogram an ECM. Each A -
G steps is explained further in this section.
A. Recoding Fuel Injector ID Code
Each fuel injector is designated with 24 hexadecimal
characters (0 - 9 or A - F) that MUST be programmed
into the ECM for correct engine fueling for each specific
cylinder. These characters can be retrieved in one of
following places:
Retrieving the Fuel Injector ID Code Data from the
ECM
The current fuel injector ID code data can be retrieved
with a scan tool. If the old ECM cannot be
communicated with a scan tool, go to the next
procedure.
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > appropriate vehicle identification > 4JK1 or 4JJ1 > Programming >
Injector ID Code.
4. Record 24 digits of each fuel injector ID code.
5. After complete the recording, turn OFF the scan tool.
6. Turn OFF the ignition.
Retrieving the Fuel Injector ID Code Data with a
Non-communicating ECM
If a scan tool does not communicate, the fuel injector ID
codes must be recorded from the factory affixed label
on the cylinder head cover or each fuel injector harness
connector housing. Recording from the label on cylinder head cover
Notice: Only perform this procedure if the fuel injectors
are not being replaced in the past.
1. Record all numbers of each cylinder on the label.
Legend 1. Cylinder #1 fuel injector ID code
2. Cylinder #2 fuel injector ID code
3. Cylinder #3 fuel injector ID code
4. Cylinder #4 fuel injector ID code
5. Injector ID code label

Recording from each fuel injector
1. Disconnect each fuel injector harness connector.
A. Record the fuel injector ID codes manually from the old ECM.
B. Reset the immobilizer security information in the old ECM. (If so equipped)
C. Replace the old ECM with the new ECM.
D. Program the immoblizer security information into the new ECM. (If so equipped)
E. Program the latest software and calibrations into the new ECM using the Service Programming System
(SPS).
F. Program the recorded fuel injector ID codes and the vehicle identification number (VIN) into the ECM using
a scan tool programming function.
G. Perform the fuel supply pump relearn procedure by allowing the engine to idle in Park or Neutral until
normal operating temperature is achieved.
RTW76ESH002501
1
2
3
4
5
4JJ1
5F
5F
5F
5F 05
F8
DE
DE 00
00
E6 F5 FB
F8
D2
DB 00
00
DC ED F7
E7
DE E8 08
02
00
02 F5
FC F4
F4 19
EC
CB
DE FF
ED
CA D1 04
EE E3
EA 49
B9
A1
B9
SAMPLE

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ISUZU KB P190 2007

6E-348 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
2. Record all numbers of each cylinder on theharness connector housing. The correct order for
the fuel injector ID codes of the following
illustration is as follows:
5F 05 00 FB 00 F7 08 F5 19 FF 04 49
Legend
1. Fuel injector ID code
2. Fuel injector

B. Resetting Immobilizer Security Information (If so
equipped)
Reset immobilizer security information in the old ECM.
Refer to Resetting and Programming Guidelines in
immobilizer section. If the old ECM cannot be
communicated with a scan tool, go to the next produce.
C. Removal and Installation
Removal Procedure 1. Disconnect the negative battery cable.
2. Loosen bolts (7) and remove the ECM cover (6). (If so equipped)
3. Disconnect the ECM harness connectors.
4. Loosen nuts (1) and remove the ECM with bracket (2) from the base bracket (3).
5. Loosen bolts (4) and remove the ECM (5). Installation Procedure
1. Install the ECM (5) to the bracket (2) and tighten bolts (4).
2. Install the ECM with bracket (2) to the base bracket (3) and tighten nuts (1).
3. Connect the ECM harness connectors.
4. Install the ECM cover (6) and tighten bolts (7).
5. Connect the negative battery cable.
D. Programming Immobilizer Security Information
(If so equipped)
Programming immobilizer security information into the
ECM. Refer to Resetting and Programming Guidelines
in immobilizer section.
E. Programming Software and Calibrations
Program latest software/ calibrations if released. Refer
to Service Programming System (SPS) Description and
SPS (Remote Procedure) or SPS (Pass-Thru
Procedure) in this section.
F. Programming Fuel Injector ID Codes and VIN 1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > appropriate vehicle identification > 4JK1 or 4JJ1 > Programming >
Program ECU.
RTW76ESH002601
5F 05 00
FB 00 F7
SAMPLE
08 F5 19
FF 0 4 49
2
1
RTW76EMH000301
5
1
2
3
4
6
7

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-353
Description and Operation
Engine Control Module (ECM) Description
Engine Control Module (ECM) Service Precautions
Important:The symbol ! warns you of an electric shock
hazard. To avoid shock and possible serious injury, DO NOT
touch the terminals. When disconnecting the harness
connectors, always turn OFF the ignition switch or disconnect
the battery cable.
The engine control module (ECM) is designed to
withstand normal current draws associated with vehicle
operation. Avoid overloading any circuit. When testing
for opens and shorts, do not ground or apply voltage to
any of the ECM circuits unless instructed to do so. In
some cases, these circuits should only be tested using
a DMM. The ECM should remain connected to the
ECM harness.
The ECM is located inside of engine compartment via
mounting bracket and is behind air cleaner case. The
ECM mainly controls the following. • The fuel system control
• The exhaust gas recirculation (EGR) system control
• The preheating (glow) system control
• The A/C compressor control
• The immobilizer control
• On-board diagnostics for engine control
The ECM constantly observes the information from
various sensors. The ECM controls the systems that
affect vehicle performance. The ECM performs the
diagnostic function of the system. The ECM can
recognize operational problems, alert the driver
through the malfunction indicator lamp (MIL), and store
diagnostic trouble codes (DTCs). DTCs identify the
system faults to aid the technician in making repairs.
RTW56ESH000201
RTW56ESH004401

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ISUZU KB P190 2007

6E–4 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0443 EVAPORATIVE (EVAP) EMISSION CONTROL
SYSTEM PURGE CONTROL CIRCUIT ..... 6E-191
Circuit Description ..................................... 6E-191
Diagnostic Aids .......................................... 6E-191
Diagnostic Trouble Code (DTC) P0443 EVAP Emission Control System Purge
Control Circuit .......................................... 6E-192
DIAGNOSTIC TROUBLE CODE (DTC) P0502 VEHICLE SPEED SENSOR (VSS) CIRCUIT
LOW INPUT ................................................ 6E-195
Circuit Description ..................................... 6E-195
Diagnostic Aids .......................................... 6E-195
Diagnostic Trouble Code (DTC) P0502 Vehicle Speed Sensor Circuit Low Input . 6E-196
DIAGNOSTIC TROUBLE CODE (DTC) P0562 SYSTEM VOLTAGE LOW .......................... 6E-202
Circuit Description ..................................... 6E-202
Diagnostic Aids .......................................... 6E-202
Diagnostic Trouble Code (DTC) P0562 System Voltage Low ............................................. 6E-202
DIAGNOSTIC TROUBLE CODE (DTC) P0563 SYSTEM VOLTAGE HIGH ......................... 6E-204
Circuit Description ..................................... 6E-204
Diagnostic Aids .......................................... 6E-204
Diagnostic Trouble Code (DTC) P0563 System Voltage High ............................................ 6E-204
DIAGNOSTIC TROUBLE CODE (DTC) P0601 ECM MEMORY CHECKSUM ..................... 6E-206
Circuit Description ..................................... 6E-206
Diagnostic Aids .......................................... 6E-206
Diagnostic Trouble Code (DTC) P0601 ECM Memory Checksum .................................. 6E-206
DIAGNOSTIC TROUBLE CODE (DTC) P0602 ECU PROGRAMMING ERROR ................. 6E-207
Circuit Description ..................................... 6E-207
Diagnostic Aids .......................................... 6E-207
Diagnostic Trouble Code (DTC) P0602 ECU Programming Error .................................. 6E-207
DTC P0650 MALFUNCTION INDICATOR LAMP (MIL) CONTOROL CIRCUIT MALFUNCTION 6E-208
Circuit Description ..................................... 6E-208
Diagnostic Aids .......................................... 6E-208
Diagnostic Trouble Code (DTC) P0650 Malfunction Indicator Lamp (MIL) Control
Circuit Malfunction ................................... 6E-209
DIAGNOSTIC TROUBLE CODE (DTC) P1167 FUEL SUPPLY SYSTEM RICH DURING
DECELERATION FUEL CUT OFF ............. 6E-211
Circuit Description ..................................... 6E-211
Diagnostic Aids .......................................... 6E-211
Diagnostic Trouble Code (DTC) P1167 Fuel Supply System Rich During
Deceleration Fuel Cutoff .......................... 6E-212
DIAGNOSTIC TROUBLE CODE (DTC) P1171 FUEL SUPPLY SYSTEM LEAN DURING
POWER ENRICHMENT ............................. 6E-214
Circuit Description ...................................... 6E-214
Diagnostic Aids .......................................... 6E-215
Diagnostic Trouble Code (DTC) P1171 Fuel Supply System Lean During Power
Enrichment .............................................. 6E-215
DIAGNOSTIC TROUBLE CODE (DTC) P1625 ECM SYSTEM RESET ............................... 6E-217
Circuit Description ...................................... 6E-217
Diagnostic Aids .......................................... 6E-217
Diagnostic Trouble Code (DTC) P1625 ECM System Reset .......................................... 6E-217
DIAGNOSTIC TROUBLE CODE (DTC) P1626 IMMOBILIZER NO SIGNAL ........................ 6E-218
Circuit Description ...................................... 6E-218
Diagnostic Aids .......................................... 6E-218
Diagnostic Trouble Code (DTC) P1626 Immobilizer No Signal .............................. 6E-219
DIAGNOSTIC TROUBLE CODE (DTC) P1631 IMMOBILIZER WRONG SIGNAL ............... 6E-222
Circuit Description ...................................... 6E-222
Diagnostic Aids .......................................... 6E-222
Diagnostic Trouble Code (DTC) P1631 Immobilizer Wrong Signal ........................ 6E-223
DIAGNOSTIC TROUBLE CODE (DTC) P1648 WRONG SECURITY CODE ENTERED .. 6E-224
Circuit Description ...................................... 6E-224
Diagnostic Aids .......................................... 6E-224
Diagnostic Trouble Code (DTC) P1648 Wrong Security Code Entered ............................ 6E-225
DIAGNOSTIC TROUBLE CODE (DTC) P1649 IMMOBILIZER FUNCTION NOT
PROGRAMMED ......................................... 6E-226
Circuit Description ...................................... 6E-226
Diagnostic Aids .......................................... 6E-226
Diagnostic Trouble Code (DTC) P1649 Immobilizer Function Not Programmed ... 6E-227
DIAGNOSTIC TROUBLE CODE (DTC) P1693 TACHOMETER OUTPUT LOW VOLTAGE 6E-228
Circuit Description ...................................... 6E-228
Diagnostic Aids .......................................... 6E-228
Diagnostic Trouble Code (DTC) P1693 Tachometer Output Low Voltage ............. 6E-229
SYMPTOM DIAGNOSIS ............................... 6E-232
PRELIMINARY CHECKS ............................. 6E-232
VISUAL/PHYSICAL CHECK ......................... 6E-232
INTERMITTENT ........................................... 6E-232

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6E–28 ENGINE DRIVEABILITY AND EMISSIONS
CONNECTOR LIST
No.Connector face No.Connector face
B-24
Green Meter-B C-122
CO Adjuster
B-58
Black Check connector E-6
Fuel injector
B-62
White Ignition switch (IGSUB : G1) E-7
Fuel injector
B-63
White Ignition switch (IGSUB : G2) E-8
Fuel injector
B-68
Immobilizer E-9
Fuel injector
C-2
Silver Engine room-RH ground E-18
Ignition coil
C-56
ECM E-60
ECM
C-107
White J/B E2 E-72
Engine earth-A
C-108
White J/B E1 E-74
Engine earth-B
C-121
IAT sensor E-77
O
2 sensor

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ENGINE DRIVEABILITY AND EMISSIONS 6E–45
J2-23 J2-23 Vehicle Speed Sensor (VSS) Signal
(Immobilizer Control
Unit Terminal B8) WHT -
- Wave form C or Approx.
6.5V at 20km/h Connect AC V J2-23 GND
J2-24 J2-24 No Connection -- - - - -- - -
J2-25 J2-25 Tachometer Output Signal BLK/
RED -
- Wave form Wave form
B or
Approx.
4.5V Connect AC V J2-25 GND
J2-26 J2-26 Thermo Relay GRN/
BLK Less than
1V
A/C request is activated: 10-14V
A/C request is not activated: Less than 1VConnect DC V J2-26 GND
J2-27 J2-27 No Connection - - - - - - - - -
J2-28 J2-28 No Connection - - - - - - - - -
J2-29 J2-29 No Connection -- - - - -- - -
J2-30 J2-30 To Data Link Connector No. 2 GRN -
-- - -- - -
J2-31 J2-31 Oxygen Sensor Heater BLU/ WHTContinuity
with
ground - Wave
Form Wave
Form D Connect
ΩJ2-31 GND
J2-32 J2-32 Check Engine Lamp (Immobilizer Control
Unit Terminal B7) BRN/
YEL Less than
1V Less than
1V Lamp is turned on: Less
than 1V
Lamp is turned off: 10-
14V Connect DC V J2-32 GND
Pin
No. B/
Box No. Pin Function
Wire
Color Signal or Continuity
ECM
Connection Tester Position
Key SW Off Key SW
On Engine
Idle Engine
2000rpm Range (+) (-)

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6E–84 ENGINE DRIVEABILITY AND EMISSIONS
SERVICE PROGRAMMING SYSTEM (SPS)
The procedure to program the control unit by using the
Service Programming System (SPS) software contained
in TIS2000 is explained below.
NOTE:
• If the Engine Control Module (ECM) was programmed, the Immobilizer System must be
linked to the ECM: Refer to section 11
“Immobilizer System-ECM replacement” for the
ECM/Immobilizer linking procedure.
• Should Tech2 display "SPS Procedure was not successful", engine will not start, but no DTCs
are present, low battery voltage or poor electrical
connections should be the primary suspects.
Perform the SPS procedure again after rectifying
the fault/s. IMPORTANT:
Perform the following checks before attempting to
program the control unit:
• The Tech2 PCMCIA card is programmed with The latest software release.
• The latest release of TIS2000 is loaded on the PC.
• The vehicle battery is fully charged.
• The control unit to be programmed is connected to the vehicle.
1. Preparations of TIS 2000 1. Connect Tech 2 to P/C.
2. Check to see if Hardware Key is plugged into Port.
3. Activate TIS 2000 by P/C.
4. On the activating screen of TIS2000, choose “Service Programming System”
5. On the screen of “Diagnostic Tester and Processing Program Selection”, choose the one that will comply
with the following.
• Tech-2 in use
• New programming by the existing module or new programming by the replaced/new module.
• Fixing position of the control unit. 6. Upon completion of the selection, push the button of
“Next”.

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ENGINE DRIVEABILITY AND EMISSIONS 6E–85
2. Demand of Data1. Connect Tech-2 to the vehicle. When activated by turning on the power of Tech-2, push the “Enter”
switch.
2. Turn on the ignition switch (without starting the engine)
3. In the main menu of Diagnostic Tester, push “F1: Service Programming System (SPS)”.
4. Push “F0: Request Info” of Tech-2. 5. Where vehicle data has been already saved in Tech
2, the existing data come on display. In this
instance, as Tech-2 starts asking whether to keep
the data or to continue obtaining anew data from the
control unit, choose either of them
6. If you select “continue”, you have to select “Model Year”, “Vehicle Type”.
7. After that. then push button and turn Ignition switch tuned on, off, on following Tech-2 display. Tech-2
will read information from controller after this
procedure.
8. During obtaining information, Tech-2 is receiving information from the control unit ECM and TCM (A/T
only) at the same time. With VIN not being
programmed into the new control unit at the time of
shipment, "obtaining information" is not complete
(because the vehicle model, engine model and
model year are specified from VIN). For the
procedure get additional information on vehicles,
instruction will be provided in dialog form, when
TIS2000 is in operation.
9. Following instructions by Tech-2, push the “Exit” switch of Tech-2, turn off the ignition of the vehicle
and turn off the power of Tech-2, thereby removing
from the vehicle. 3. Data Exchange
1. Connect Tech-2 to P/C, turn on the power and click the “Next” button of P/C.
2. Check VIN of the vehicle and choose “Next”.
3. Select “System Type” for required control unit.
• Engine (Programming for ECM or PCM)
• Transmission (Programming for TCM)
4. When a lack of data is asked from among the following menu, enter accordingly.
Select following Menu
• Model Year
• Model
• Engine type
• Transmission type
• Destination code (vehicles for general export)*1
• Immobilizer
Etc.
* 1: How to read the destination code
Destination code can be read from ID Plate affixed on
vehicles, while on VIN plate the destination code is
described at the right-hand edge of Body Type line. In
the figure, the destination code can be read as "RR3"
(Australia).

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