DTC CHECK ISUZU KB P190 2007 Workshop Repair Manual
[x] Cancel search | Manufacturer: ISUZU, Model Year: 2007, Model line: KB P190, Model: ISUZU KB P190 2007Pages: 6020, PDF Size: 70.23 MB
Page 1312 of 6020
6E-278 Engine Control System (4JH1)
• Destination Code
j. Select Next.
k. Verify your selection on the Summary screen.
Important:
Refer to Service Bulletins before service programming is
performed if the bulletins are listed along with the
calibration files.
Important:
Select Cancel if you receive a message stating that the
calibration selected is already the current calibration in
the ECM and reprogramming with the same download is
not allowed.
l. Select Reprog.
m. The Transfer Data screen will appear until the progress bar reaches 100%.
6. Close the application and return to the TIS application selection screen after the download is
complete.
7. Turn OFF the scan tool.
8. Disconnect the scan tool from the terminal.
9. Transfer the data from the scan tool to the ECM using the following procedure:
a. Connect the scan tool to the vehicle 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.
f. Select the Program ECU on the scan tool.
g. Follow the on-screen instructions and select Continue.
h. Programming in Process will appear until the progress bar reaches 100%.
Important:
The vehicle fitted with automatic transmission, Check
Trans lamp may blink while programming the ECM since
communication between the ECM and TCM is
interrupted. Clear DTC in any module afte
r
programming.
i. Select Continue and exit the program after the scan tool displays Programming W as
Successful.
10. Turn OFF the ignition.
11. Turn OFF the scan tool.
12. Disconnect the scan tool from the vehicle.
Service Programming System (SPS) (Pass-
Thru Procedure)
Pass-Thru programming allows the scan tool to remain
connected to the terminal and to the vehicle throughou
t
the programming process. The vehicle must be in close
proximity to the terminal while using Pass-Thru.
Important:
The TIS supports service programming with the scan
tool scan tool only.
1. Launch the TIS application at the terminal.
2. Select the Service Programming System at the main screen.
3. Highlight the following information on the Selec
t
Diagnostic Tool and Programming Process screen:
• Select Diagnostic Tool-Select Pass-Thru
• Select Programming Process-Identify whethe
r
as existing engine control module (ECM) is
being reprogrammed or an ECM is being
replaced with a new one.
• Select ECU Location-Select Vehicle.
4. Select Next.
5. Complete all vehicle data on the Preparing fo
r
Communication/Determine Vehicle screen until
Next is highlighted.
6. Select Next.
7. Follow the instruction on the Preparing fo
r
Communication screen.
Important:
In order to reduce the potential for signal loss, the RS-
232 cable should not be more than 25 feet long.
8. Select Next.
9. Verify the VIN on the Validate Vehicle Identification Number (VIN) screen and select 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. 10. Highlight Engine on the System Type screen and
select Next, if requested.
11. 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
• Destination Code
12. Select Next.
13. Verify your selection on the Summary screen.
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ISUZU KB P190 2007
Page 1313 of 6020
Engine Control System (4JH1) 6E-279
Important:
Refer to Service Bulletins before service programming is
performed if the bulletins are listed along with the
calibration files.
Important:
Select Cancel if you receive a message stating that the
calibration selected is already the current calibration in
the scan tool and reprogramming with the same
download is not allowed.
14. Select Reprog.
15. The Transfer Data screen will appear until the progress bar reaches 100%.
Important:
The vehicle fitted with automatic transmission, Check
Trans lamp may blink while programming the ECM since
communication between the ECM and TCM is
interrupted. Clear DTC in any module afte
r
programming. 16. Select Close on the Programming Complete
screen.
17. Turn OFF the scan tool.
18. Disconnect the scan tool from the vehicle.
Accelerator Pedal Position (APP) Sensor
Replacement
Removal Procedure 1. Disconnect the negative battery cable.
2. Disconnect the APP sensor connector.
3. Loosen two screws and remove APP sensor from the throttle body.
Installation Procedure 1. Temporary tighten the APP sensor by two screws. 2. Connect a APP sensor connectors to the
APP
sensor.
3. Connect the Tech2 to the vehicle.
4. Connect the negative battery cable.
5. Select "Data Display" with the Tech2.
6. Check the APP sensor data and adjust the
APP
sensor.
7. Tighten two screws.
Crankshaft Position (CKP) Sensor
Replacement
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect connector from the CKP sensor.
3. Loosen a bolt and remove the CKP sensor from the clutch housing.
Installation Procedure
1. Install the CKP sensor to the clutch housing.
2. Tighten CKP sensor by a bolt with specified tightening torque.
Tightening Torque
• Bolts: 8.0 - 12.0 N.m (0.8 - 1.2 kgf.m)
3. Connect a CKP sensor connector to the CKP sensor.
4. Connect the negative battery cable.
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ISUZU KB P190 2007
Page 1551 of 6020
6C-10 FUEL SYSTEM (4JK1/4JJ1)
Fuel System Check
Description
Conforms to a fuel leak. Engine acceleration raises fuel
pressure and which increases the leak.
Leak could be in the following pipes and locations.
• Between injectors and fuel rail.
• Between fuel rail and fuel supply pump.
• Between fuel supply pump and fuel filter.
• Between fuel filter and fuel tank.
• Between pressure limiter and fuel cooler.
• Between fuel cooler and fuel tank.
• Between injector over flow and leak off pipe.
Diagnostic Aids
Check the following items.
• Air in the fuel line
• Clogged fuel filter
• Fuel pipe malfunction (Crushing, breakage,
clogging, disconnection, etc.)
• Fuel cooler malfunction (Crushing, breakage,
clogging, disconnection, etc.)
• Fuel tank malfunction
• Injector malfunction
• Fuel supply pump malfunction
• Pressure limiter malfunction
An intermittent may be caused by a poor connection,
rubbed-through wire insulation or a wire broken inside
the insulation. Check for poor connections or a
damaged harness.
Inspect the ECM harness and connector for imprope
r
mating, broken locks, improperly formed or damaged
terminals, poor terminal-to-wire connection, and
damaged harness.
ECU may set a DTC, if there is adequate air in fuel line.
Schematic Reference: Engine Controls Schematics
Step Action Value(s) Yes No
1 Check the fuel quantity. W as a problem found?
Go to Step 2 Add fuel and
Go to Step 2
2 Check the fuel quality.
1. Discharge the fuel from fuel tank
2. Replenish the tank with specified fuel
3. Bleed the air from the fuel system
4. Start the engine
Could the engine be started?
Go to Step 7 Go to Step 3
3 Bleed the air from fuel system. Refer to Fuel
System Air Bleeding in this section.
Is the action complete?
Go to Step 4
4 Check the main fuel filter for clogging.
Clean, repair, or replace as required.
Notice: Replacement of a fuel filter is checking
to a dealer.
Is the action complete?
Go to Step 5
5 Check the fuel line and fuel cooler for damage
and leakage.
Clean, repair, or replace as required.
• Crushed areas
• Breakage
• Cracks
• Loose connections
Is the action complete?
Go to Step 6
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ISUZU KB P190 2007
Page 1558 of 6020
FUEL SYSTEM (4JK1/4JJ1) 6C-17
Record the Fuel Injector ID Code Data from
each injector housing
1. Remove each fuel injector harness connector.
2. Record all numbers of each cylinder on the harness connector housing. The correct order fo
r
the fuel injector ID codes of the following
illustration is as follows:
5F 05 00 FB 00 F7 08 F5 19 FF 04 49
RTW 76ESH002601
Legend
1. Fuel Injector ID Code
2. Fuel Injector
Programming Fuel Injector ID Codes
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select Diagnostics > appropriate vehicle identification > 4JK1 or 4JJ1 > Programming >
Replace Injector.
4. In order to get programming approval, the on- screen displays a message to user. Get
programming approval from the TIS 2000 using
the following procedure:
a. Connect a scan tool to the terminal that installed TIS 2000 with the latest software and
the hardware key is plugged into port.
b. Turn ON the scan tool and keep at title screen.
c. Launch the TIS application.
d. Select the Security Access at the main screen.
e. Highlight the "Tech" 2 on the Diagnostic Tool Selection screen and click "Next".
f. Click "Close" on the Security Access Enabled screen.
g. Turn OFF the scan tool.
h. Disconnect the scan tool from the terminal.
5. Reinstall a scan tool to the vehicle.
6. Turn ON the ignition, with the engine OFF.
7. Select Diagnostics > appropriate vehicle identification > 4JK1 or 4JJ1 > Programming >
Replace Injector.
8. Enter 24 figures of replaced fuel injector ID code.
9.
After complete the programming, turn OFF the
ignition for 30 seconds.
10.Start the engine and let idle.
11.Inspect for a proper engine running condition and for no DTC's. Refer to the Diagnostic System
Check - Engine Controls if needed.
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ISUZU KB P190 2007
Page 1618 of 6020
ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-1
SECTION 6E
ENGINE CONTROL SYSTEM(4JK1/4JJ1)
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-3 Temperature vs Resistance . . . . . . . . . . . . . . . . 6E-3
Altitude vs Barometric Pressure . . . . . . . . . . . . . 6E-3
Diagnostic Trouble Code (DTC) Type Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-4
Diagnostic Trouble Code (DTC) List . . . . . . . . . 6E-4
Schematic and Rounting Diagrams. . . . . . . . . . . . 6E-9 Fuel System Routing Diagram . . . . . . . . . . . . . . 6E-9
Vacuum Hose Routing Diagram . . . . . . . . . . . . . 6E-9
Engine Controls Schematics . . . . . . . . . . . . . . 6E-10
Component Locator. . . . . . . . . . . . . . . . . . . . . . . 6E-27 Engine Controls Component Views . . . . . . . . . 6E-27
Engine Control Module (ECM) Connector End Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-30
Engine Control Connector End Views . . . . . . . 6E-33
Diagnostic Information and Procedures . . . . . . . 6E-42 Engine Control System Check Sheet . . . . . . . . 6E-42
Diagnostic Starting Point - Engine Controls . . . 6E-43
Diagnostic System Check - Engine Controls . . 6E-44
Scan Tool Data List . . . . . . . . . . . . . . . . . . . . . 6E-46
Scan Tool Data Definitions . . . . . . . . . . . . . . . . 6E-49
Scan Tool Output Controls . . . . . . . . . . . . . . . . 6E-54
Scan Tool Does Not Power Up. . . . . . . . . . . . . 6E-55
Scan Tool Does Not Communicate with CAN Device. . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-56
Lost Communication with The Engine Control Module (ECM) . . . . . . . . . . . . . . . . . . 6E-59
Engine Cranks but Does Not Run . . . . . . . . . . 6E-62
DTC P0016 (Flash Code 16) . . . . . . . . . . . . . . 6E-68
DTC P0045 (Flash Code 33) . . . . . . . . . . . . . . 6E-70
DTC P0087 (Flash Code 225) . . . . . . . . . . . . . 6E-72
DTC P0088 (Flash Code 118) . . . . . . . . . . . . . 6E-77
DTC P0089 (Flash Code 151) . . . . . . . . . . . . . 6E-82
DTC P0091 or P0092 (Flash Code 247) . . . . . 6E-85
DTC P0093 (Flash Code 227) . . . . . . . . . . . . . 6E-88
DTC P0101 (Flash Code 92) . . . . . . . . . . . . . . 6E-93
DTC P0102 or P0103 (Flash Code 91) . . . . . . 6E-96
DTC P0107 or P0108 (Flash Code 32) . . . . . 6E-100
DTC P0112 or P0113 (Flash Code 22) . . . . . 6E-104
DTC P0116 (Flash Code 23) . . . . . . . . . . . . . 6E-108
DTC P0117 or P0118 (Flash Code 23) . . . . . 6E-110
DTC P0122 or P0123 (Flash Code 43) . . . . . 6E-114
DTC P0182 or P0183 (Flash Code 211) . . . . 6E-118
DTC P0192 or P0193 (Flash Code 245) . . . . 6E-122
DTC P0201, P0202, P0203 or P0204 (Flash Code 271, 272, 273 or 274) . . . . . . . . 6E-126
DTC P0217 (Flash Code 542) . . . . . . . . . . . . 6E-133
DTC P0219 (Flash Code 543) . . . . . . . . . . . . 6E-135
DTC P0231 or P0232 (Flash Code 69) . . . . . 6E-137
DTC P0234 (Flash Code 42) . . . . . . . . . . . . . 6E-140 DTC P0299 (Flash Code 65) . . . . . . . . . . . . . 6E-143
DTC P0335 (Flash Code 15) . . . . . . . . . . . . . 6E-146
DTC P0336 (Flash Code 15) . . . . . . . . . . . . . 6E-149
DTC P0340 (Flash Code 14) . . . . . . . . . . . . . 6E-151
DTC P0341 (Flash Code 14) . . . . . . . . . . . . . 6E-154
DTC P0380 (Flash Code 66) . . . . . . . . . . . . . 6E-156
DTC P0401 (Flash Code 93) . . . . . . . . . . . . . 6E-159
DTC P0403 (Flash Code 37) . . . . . . . . . . . . . 6E-161
DTC P0404 (Flash Code 45) . . . . . . . . . . . . . 6E-164
DTC P0405 or P0406 (Flash Code 44) . . . . . 6E-166
DTC P0500 (Flash Code 25) . . . . . . . . . . . . . 6E-170
DTC P0501 (Flash Code 25) . . . . . . . . . . . . . 6E-174
DTC P0512 (Flash Code 417) . . . . . . . . . . . . 6E-176
DTC P0562 or P0563 (Flash Code 35) . . . . . 6E-178
DTC P0565 (Flash Code 515) . . . . . . . . . . . . 6E-181
DTC P0566 (Flash Code 516) . . . . . . . . . . . . 6E-183
DTC P0567 (Flash Code 517) . . . . . . . . . . . . 6E-185
DTC P0568 (Flash Code 518) . . . . . . . . . . . . 6E-187
DTC P0571 (Flash Code 26) . . . . . . . . . . . . . 6E-189
DTC P0601 (Flash Code 53) . . . . . . . . . . . . . 6E-192
DTC P0602 (Flash Code 154) . . . . . . . . . . . . 6E-193
DTC P0604 or P0606 (Flash Code 153 or 51) . . . . . . . . . . . . . . . . . 6E-195
DTC P0615 (Flash Code 19) . . . . . . . . . . . . . 6E-196
DTC P0633 (Flash Code 176) . . . . . . . . . . . . 6E-198
DTC P0638 (Flash Code 61) . . . . . . . . . . . . . 6E-199
DTC P0642 or P0643 (Flash Code 55) . . . . . 6E-201
DTC P0650 (Flash Code 77) . . . . . . . . . . . . . 6E-204
DTC P0652 or P0653 (Flash Code 56) . . . . . 6E-207
DTC P0661 or P0662 (Flash Code 58) . . . . . 6E-211
DTC P0698 or P0699 (Flash Code 57) . . . . . 6E-215
DTC P0700 (Flash Code 185) . . . . . . . . . . . . 6E-219
DTC P1064 or P1065 (Flash Code 247) . . . . 6E-220
DTC P1093 (Flash Code 227) . . . . . . . . . . . . 6E-224
DTC P1094 (Flash Code 226) . . . . . . . . . . . . 6E-229
DTC P1196, P1197 or P1198 (Flash Code 461) . . . . . . . . . . . . . . . . . . . . . 6E-235
DTC P124B (Flash Code 157) . . . . . . . . . . . . 6E-237
DTC P1261 (Flash Code 34) . . . . . . . . . . . . . 6E-240
DTC P1262 (Flash Code 34) . . . . . . . . . . . . . 6E-242
DTC P1404 (Flash Code 45) . . . . . . . . . . . . . 6E-244
DTC P1411, P1412 or P1413 (Flash Code 445) . . . . . . . . . . . . . . . . . . . . . 6E-246
DTC P156A or P156B (Flash Code 135) . . . . 6E-248
DTC P161B (Flash Code 179) . . . . . . . . . . . . 6E-251
DTC P1621 (Flash Code 54, 254) . . . . . . . . . 6E-253
DTC P1664 (Flash Code 76) . . . . . . . . . . . . . 6E-255
DTC P2100, P2101 or P2103 (Flash Code 446) . . . . . . . . . . . . . . . . . . . . . 6E-258
DTC P2122 or P2123 (Flash Code 121) . . . . 6E-261
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Page 1619 of 6020
6E-2 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
DTC P2127 or P2128 (Flash Code 122) . . . . 6E-265
DTC P2132 or P2133 (Flash Code 123) . . . . 6E-269
DTC P2138, P2139 or P2140 (Flash Code 124, 125 or 126) . . . . . . . . . . . . 6E-274
DTC P2146, P2147 or P2148 (Flash Code 158) . . . . . . . . . . . . . . . . . . . . . 6E-280
DTC P2149, P2150 or P2151 (Flash Code 159) . . . . . . . . . . . . . . . . . . . . . 6E-284
DTC P2227 (Flash Code 71) . . . . . . . . . . . . . 6E-288
DTC P2228 or P2229 (Flash Code 71) . . . . . 6E-291
DTC P2621 or P2622 (Flash Code 94) . . . . . 6E-295
DTC U0001 or U0101 Flash Code 84 or 85) . . . . . . . . . . . . . . . . . . 6E-298
DTC U0167 (Flash Code 177) . . . . . . . . . . . . 6E-299
EGR Control System Check. . . . . . . . . . . . . . 6E-300
Glow Control System Check . . . . . . . . . . . . . 6E-304
In-Tank Fuel Pump System Check . . . . . . . . . 6E-309
Cruise Control System Check . . . . . . . . . . . . 6E-312
Turbocharger Control System Check . . . . . . . 6E-318
Symptoms - Engine Controls . . . . . . . . . . . . . . 6E-321 Symptoms - Engine Controls . . . . . . . . . . . . . 6E-321
Intermittent Conditions . . . . . . . . . . . . . . . . . . 6E-323
Hard Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-326
Rough, Unstable, or Incorrect Idle and Stalling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-328
High Idle Speed . . . . . . . . . . . . . . . . . . . . . . . 6E-330
Cuts Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-331
Surges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-332
Lack of Power, Sluggishness or Sponginess . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-334
Hesitation, Sag or Stumble. . . . . . . . . . . . . . . 6E-336
Abnormal Combustion Noise . . . . . . . . . . . . . 6E-338
Poor Fuel Economy . . . . . . . . . . . . . . . . . . . . 6E-339
Excessive Smoke (Black Smoke) . . . . . . . . . 6E-341
Excessive Smoke (White Smoke) . . . . . . . . . 6E-343
Repair Instructions . . . . . . . . . . . . . . . . . . . . . . 6E-345 Engine Control Module (ECM) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 6E-345
Service Programming System (SPS) Description . . . . . . . . . . . . . . . . . . . . . . . . . . 6E-347
Service Programming System (SPS) (Remote Procedure) . . . . . . . . . . . . . . . . . . . 6E-348
Service Programming System (SPS) (Pass-Thru Procedure) . . . . . . . . . . . . . . . . . 6E-349
Description and Operation . . . . . . . . . . . . . . . . 6E-351 Engine Control Module (ECM) Description . . 6E-351
Engine Control Component Description . . . . . 6E-353
Fuel System Description . . . . . . . . . . . . . . . . 6E-357
Fuel System Component Description. . . . . . . 6E-358
Fuel Injection System Description . . . . . . . . . 6E-362
Exhaust Gas Recirculation (EGR) System Description . . . . . . . . . . . . . . . . . . . . 6E-363
Turbocharger Description . . . . . . . . . . . . . . . . 6E-364
Special Tools and Equipment . . . . . . . . . . . . . . 6E-366 Special Tools and Equipment . . . . . . . . . . . . . 6E-366
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6E-6 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
P0501 25 AAA Vehicle Speed Sensor Circuit Range/ Performance
P0512 417 C -- Starter Request Circuit
P0562 35 C AA System Voltage Low
P0563 35 C AA System Voltage High
P0565 515 D D- Cruise Control On Signal
P0566 516 D D- Cruise Control Off Signal
P0567 517 D D- Cruise Control Resume Signal
P0568 518 D D- Cruise Control Set Signal
P0571 26 D D- Brake Switch Circuit
P0601 53 C AA Internal Control Module Memory Check Sum Error
P0602 154 C AA Control Module Programming Error
P0604 153 C AA Internal Control Module RAM Error
P0606 51 C AA ECM Processor
P0615 19 C -- Starter Relay Circuit
P0633 176 C AA Immobilizer Not Programmed
P0638 61 A AA Throttle Actuator Control Range/ Performance
P0642 55 C AA Sensor Reference Voltage 1 Circuit Low
P0643 55 C AA Sensor Reference Voltage 1 Circuit High
P0650 77 A AA Malfunction Indicator Lamp (MIL) Control Circuit
P0652 56 A AA Sensor Reference Voltage 2 Circuit Low
P0653 56 A AA Sensor Reference Voltage 2 Circuit High
P0661 58 C AA Intake Manifold Turning Valve Control Circuit Low
P0662 58 C AA Intake Manifold Turning Valve Control Circuit High
P0698 57 A AA Sensor Reference Voltage 3 Circuit Low
P0699 57 A AA Sensor Reference Voltage 3 Circuit High
P0700 185 A A- Transmission Control System (MIL Request)
P1064 247 A AA Fuel Pressure Regulator Control Circuit
P1065 247 A AA Fuel Pressure Regulator Control Circuit
P1093 227 A AA Fuel Rail Pressure Too Low
P1094 226 A AAFuel Rail Pressure Too Low (FRP Regulator
Commanded High)
P1094 226 C AA Fuel Rail Pressure Too Low (Fuel Pressure Drop)
P1196 461 A AA Intake Throttle Solenoid Control Driver
P1197 461 A AA Intake Throttle Solenoid Control Driver
P1198 461 A AA Intake Throttle Solenoid Control Driver
P124B 157 C AA Injector Circuit Short Across Group 1 & 2
P1261 34 A AA Injector Positive Voltage Control Circuit Group 1
P1261 34 A AAInjector Positive Voltage Control Circuit (Supply Voltage
Low)
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)
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Page 1661 of 6020
6E-44 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
Diagnostic Starting Point - Engine Controls
Begin the system diagnosis with Diagnostic System
Check - Engine Controls. The Diagnostic System
Check - Engine Controls will provide the following
information:
• The identification of the control modules which command the system.
• The ability of the control modules to communicate through the serial data circuit.
• The identification of any stored diagnostic trouble codes (DTCs) and the their statuses.
The use of the Diagnostic System Check - Engine
Controls will identify the correct procedure for
diagnosing the system and where the procedure is
located.
Important: Engine Control System Check Sheet must
be used to verify the complaint vehicle, you need to
know the correct (normal) operating behavior of the
system and verify that the customer complaint is a valid
failure of the system. Reading Flash Diagnostic Trouble Codes (DTC)
The provision for communicating with the ECM is the
Data Link Connector (DLC). The DTC(s) stored in the
ECM memory can be read either through a hand-held
diagnostic scanner such as Tech 2 plugged into the
DLC or by counting the number of flashes of the
malfunction indicator lamp (MIL) or the service vehicle
soon (SVS) lamp when the diagnostic test terminal of
the DLC is grounded. The DLC terminal "1" (diagnostic
request) is pulled "Low" (grounded) by jumped to DLC
terminal "4", which is a ground wire. Once terminals "1"
and "4" have been connected, turn the ignition switch
ON, with the engine OFF. The MIL (except Euro 4
specification) or the SVS lamp (Euro 4 specification)
will indicate a DTC three times is a DTC is present and
history. If more than one DTC has been stored in the
ECM's memory, the DTCs will be output set order with
each DTC being displayed three times. The flash DTC
display will continue as long as the DLC is shorted.
RTW76ESF000301
ON
OFF
ON
OFF
1.2
3.2
2.62.6
2nd digit number1st digit number
3.20.6 2
1.2
0.60.60.6
0.30.30.3
0.30.30.30.30.3
Example:DTC 23 stored
Unit: Second
Example:DTC 225 stored
3rd digit
number 2nd digit number1st digit number
0.60.60.60.60.60.60.60.6
3
0.30.31.21.2
2
25
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ISUZU KB P190 2007
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ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-45
Diagnostic System Check - Engine Controls
Description
The Diagnostic System Check - Engine Controls is an
organized approach to identifying a condition that is
created by a malfunction in the electronic engine
control system. The Diagnostic System Check must be
the starting point for any driveability concern. The
Diagnostic System Check directs the service technician
to the next logical step in order to diagnose the
concern. Understanding and correctly using the
diagnostic table reduces diagnostic time, and prevents
the replacement of good parts.
Test Description
The numbers below refer to the step numbers on the
diagnostic table.
2. Lack of communication may be because of a partial
or a total malfunction of the serial data circuit.
7. The presence of DTCs which begin with U, indicate
that some other module is not communicating.
10. If there are other modules with DTCs set, refer to
the DTC list. The DTC list directs you to the appropriate
diagnostic procedure. If the control module stores
multiple DTCs, diagnose the DTCs in the following
order:
• Component level DTCs, such as sensor DTCs, solenoid DTCs, actuator DTCs, and relay DTCs.
Diagnose the multiple DTCs within this category in
numerical order. Begin with the lowest numbered
DTC, unless the diagnostic table directs you
otherwise. Diagnostic System Check Engine Controls
Important:
• DO NOT perform this diagnostic if there is not a driveability concern, unless another procedure
directs you to this diagnostic.
• Before you proceed with diagnosis, search for applicable service bulletins.
• Unless a diagnostic procedure instructs you, DO NOT clear the DTCs.
• If there is a condition with the starting system, refer to the starting system section in the engine
mechanical.
• Ensure the battery has a full charge.
• Ensure the battery cables (+) (-) are clean and tight.
• Ensure the ECM grounds are clean, tight, and in the correct location.
• Ensure the ECM harness connectors are clean and correctly connected. DO NOT attempt to
crank the engine with ECM harness connectors
disconnect.
• Ensure the ECM terminals are clean and correctly mating.
• Ensure the fuel injector ID code data is correctly programmed in to the ECM.
• Ensure the immobilizer security information is correctly programmed into the ECM and
immobilizer control unit (ICU).
• If there are fuel system DTC’s (P0087, P0088, P0089, P0093, P1093 or P1094), diagnose sensor
DTCs, solenoid DTCs, actuator DTCs and relay
DTCs first.
Diagnostic System Check - Engine Controls
Step Action Value(s)Yes No
1 Install a scan tool.
Does the scan tool turn ON? —
Go to Step 2 Go to Scan Tool
Does Not Power Up
2 1. Turn ON the ignition, with the engine OFF.
2. Attempt to establish communication with the listed control modules.
•ECM
• Immobilizer control unit (ICU) (If so equipped)
• Transmission control module (TCM) (AISIN A/T only)
Does the scan tool communicate with all the listed
control modules? —
Go to Step 3 Go to Scan Tool
Does Not
Communicate with CAN Device
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ISUZU KB P190 2007
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6E-46 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
3Notice:
If an immobilizer system is active the ECM
will disable the fuel injection causing the engine to
stall immediately after starting and energize the
starter cut relay to disable cranking.
Attempt to crank the engine.
Does the engine crank? —
Go to Step 4 Go to Step 5
4 Attempt to start the engine.
Does the engine start and idle? —
Go to Step 6 Go to Engine
Cranks but Does
Not Run
5 Does the scan tool display ECM DTCs P0615,
P0633, P161B or U0167?
—
Go to Applicable DTC Problem is relating
to starting system. Refer to the
applicable
diagnostic chart in starting system
6 Select the DTC display function for the following
control modules: •ECM
• ICU (If so equipped)
• TCM (AISIN A/T only)
Does the scan tool display any DTCs? —
Go to Step 7 Go to Step 11
7 Does the scan tool display DTCs which begin with
U or other control module communication fault
DTCs? —
Go to Applicable
DTC Go to Step 8
8 Does the scan tool display ECM DTCs P0601,
P0602, P0604, P0606 or P1621? —Go to Applicable
DTC Go to Step 9
9 Does the scan tool display ECM DTCs P0562 or
P0563, P156A or P156B? —
Go to Applicable
DTC Go to Step 10
10 Is there any other code in any controller that has
not been diagnosed? —Go to Applicable
DTC Go to Step 11
11 Is the customer’s concern with the automatic
transmission? —Go to Diagnostic
System Check - Transmission
Controls Go to Step 12
12 Is the customer’s concern with the immobilizer
system? —Go to Diagnostic
System Check - Immobilizer
Controls Go to Step 13
13 1. Review the following symptoms.
2. Refer to the applicable symptom diagnostic table:
• Hard Start
• Rough, Unstable, or Incorrect Idle and Stalling
• High Idle Speed
•Cuts Out
• Surges
• Lack of Power, Sluggishness, or Sponginess
• Hesitation, Sag, Stumble
• Abnormal Combustion Noise
• Poor Fuel Economy
• Excessive Smoke (Black Smoke)
• Excessive Smoke (White Smoke)
Did you find and correct the condition? —
System OK Go to Intermittent
Conditions
Step
Action Value(s)Yes No
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ISUZU KB P190 2007