Immobilizer ISUZU KB P190 2007 Workshop Owner's Manual
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Page 1870 of 6020
ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-253
DTC P161B (Flash Code 179)
Circuit Description
The ECM communicates with the immobilizer control
unit (ICU) to execute immobilizer function. The ECM
transmits a specific request signal to the ICU and the
ICU sends back a response signal to the ECM. Both
communication signals are carried out via a controller
area network (CAN) communication bus. If the ECM
receives a wrong response signal from the ICU, this
DTC will set.
Condition for Setting the DTC • The ECM receives a wrong immobilizer response signal from the ICU.
Action Taken When the DTC Sets • The ECM illuminates the SVS lamp when the diagnostic runs and fails. Refer to DTC Type
Definitions for Action Taken When the DTC Sets -
Type C. (Euro 4 Specification) • The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
(Except Euro 4 Specification)
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the SVS Lamp/ DTC - Type C. (Euro 4
Specification)
• Refer to DTC Type Definitions for Condition for Clearing the MIL/ DTC - Type A. (Except Euro 4
Specification)
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
• Electromagnetic interference may affect intermittent condition.
Circuit/ System Testing DTC P161B
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 a 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 a scan tool.
Is DTC P0633, U0001 or U0167 also set? —
Go to Applicable DTC Go to Step 3
3 Monitor the immobilizer DTC Information with a
scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B or U? —
Go to Applicable
DTC in Immobilizer Section Go to Step 4
4 Program immobilizer security information into the
ECM. Refer to Resetting and Programming
Guidelines 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 and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement? —
Go to Step 6
—
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ISUZU KB P190 2007
Page 1872 of 6020
ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-255
DTC P1621 (Flash Code 54, 254)
Circuit Description
The electrically erasable & programmable read only
memory (EEPROM) memorizes learning data, VIN data
and immobilzer security information. If the ECM detects
an error in either of their data, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects a faulty learning data in its internal EEPROM. (Flash Code 54)
• The ECM detects a faulty VIN data or immobilizer security information in its internal EEPROM. (Flash
Code 254) Action Taken When the DTC Sets
• The ECM illuminates the SVS lamp when the diagnostic runs and fails. Refer to DTC Type
Definitions for Action Taken When the DTC Sets -
Type C. (Euro 4 Specification)
• The ECM illuminates the MIL when the diagnostic runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
(Except Euro 4 Specification)
• The ECM limits fuel injection quantity. (Flash Code 54)
• The ECM inhibits cruise control. (Flash Code 54)
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the SVS Lamp/ DTC - Type C. (Euro 4
Specification)
• Refer to DTC Type Definitions for Condition for Clearing the MIL/ DTC - Type A. (Except Euro 4
Specification)
Circuit/ System Testing DTC P1621
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. Ensure that all tool connections are secure.
2. Ensure that programming equipment is operating correctly.
3. Install a scan tool.
4. Turn OFF the ignition for 30 seconds.
5. Turn ON the ignition, with the engine OFF.
6. Monitor the DTC Information with a scan tool.
Does the DTC fail this ignition? —
Go to Step 3 Go to Step 5
3 1. Verify the correct VIN and immobilizer code
are entered into the ECM with a scan tool.
Refer to ECM Replacement.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
Does the DTC fail this ignition? —
Go to Step 4 Go to Step 5
4 Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement? —
Go to Step 5
—
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Page 1917 of 6020
6E-300 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
DTC U0001 or U0101 (Flash Code 84 or 85)
Circuit Description
The ECM, the transmission control module (TCM), the
immobilizer control unit (ICU), the data recording
module (DRM), instrument panel (IP) cluster and scan
tool communicate control and diagnostic information
via a controller area network (CAN) communication
bus. The ECM monitors CAN operational status by
expecting a constant flow of messages from the TCM,
ICU, DRM and IP cluster. If the ECM fails to send or
receive an expected message from the TCM, ICU,
DRM and IP cluster, DTC U0001 or U0101 will set
depending on what communication is lost.
Condition for Running the DTC • The battery voltage is more than 9 volts.
• The ignition switch is ON.
Condition for Setting the DTC • The ECM detects that the CAN Bus OFF status. (DTC U0001)
• The ECM detects that the CAN Bus messages from the TCM are not being received. (DTC
U0101) Action Taken When the DTC Sets
• The ECM illuminates the MIL when the diagnostic runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the MIL/ DTC - Type A.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
Notice: • If the TCM has DTCs set, clear the DTCs in the TCM first.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC U0001 or U0101
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 Refer to Scan Tool Does Not Communicate with
The CAN Device in this section.
Did you complete the action? —
Go to Step 3
—
31. Reconnect all previously disconnected
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the
vehicle within the conditions that you
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 4
4 Observe the DTC information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK
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Page 1918 of 6020
ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-301
DTC U0167 (Flash Code 177)
Circuit Description
The ECM communicates with the immobilizer control
unit (ICU) to execute immobilizer function. The ECM
sends request signal to the ICU. The ECM receives
response signal from the ICU. Both communication
signals are carried out via a controller area network
(CAN) communication bus. If the ECM does not detect
a response signal from the ICU, this DTC will set.
Condition for Setting the DTC • The ECM does not receive an immobilizer response signal from the ICU.
Action Taken When the DTC Sets • The ECM illuminates the SVS lamp when the diagnostic runs and fails. Refer to DTC Type
Definitions for Action Taken When the DTC Sets -
Type C. (Euro 4 Specification) • The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
(Except Euro 4 Specification)
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the SVS Lamp/ DTC - Type C. (Euro 4
Specification)
• Refer to DTC Type Definitions for Condition for Clearing the MIL/ DTC - Type A. (Except Euro 4
Specification)
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
• Electromagnetic interference may affect intermittent condition.
• Any communication fault with the ICU may set this DTC.
Circuit/ System Testing DTC U0167
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 a 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 a scan tool.
Is DTC U0001 also set? —
Go to DTC U0001 Go to Step 3
3 Attempt to communicate with the immobilizer
control unit (ICU) via the Immobilizer Data table.
Does the scan tool communicate with the ICU? —
Go to Step 4 Go to Diagnostic
System Check - Immobilizer Controls
4 Monitor the immobilizer DTC Information with a
scan tool.
Does the immobilizer DTCs fail this ignition which
begin with B or U? —
Go to Applicable
DTC in Immobilizer
Section Go to Step 5
5 Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement? —
Go to Step 6
—
61. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition, with the engine OFF.
Did the DTC fail this ignition? —
Go to Step 2 Go to Step 7
7 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK
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Page 1964 of 6020
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
Page 1965 of 6020
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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Page 1970 of 6020
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
Page 2174 of 6020
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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Page 2198 of 6020
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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Page 2215 of 6020
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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