service indicator ISUZU KB P190 2007 Workshop Repair Manual

0B-2 MAINTENANCE AND LUBRICATION
MAINTENANCE SCHEDULE (For GENERAL EXPORT)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Replace the fuel filter (**Mark) when the fuel filter indicator light is lit.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate


SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
ENGINE
Idling speed and acceleration
(GASOLINE) I I - I - I - I - I - I - I - I - I - I (DIESEL) I I I I I I I I I I I I I I I I I I I I * Air cleaner element
(GASOLINE) - I - I - I - R - I - I - I - R - I - I (DIESEL) I I I I I I I R I I I I I I I R I I I I * Engine oil (HFV6) - - R - - R - - R - - R - - R - - R - - (C24SE) Replace every 12,000km (4JH1-TC, 4JJ1 (Standard Output),
4JJ1 (High Output)) - R - R - R - R - R - R - R - R - R - R

(4JA1-T) R R R R R R R R R R R R R R R R R R R R * Engine oil filter (HFV6) - - R - - R - - R - - R - - R - - R - - (C24SE) Replace every 12,000km (4JH1-TC, 4JA1-T) - R - R - R - R - R - R - R - R - R - R (4JJ1 (Standard Output),
4JJ1 (High Output)) - - - R - - - R - - - R - - - R - - - R
Oil leakage and contamination (GASOLINE) - I - I - I - I - I - I - I - I - I - I (DIESEL) I I I I I I I I I I I I I I I I I I I I Fuel leakage
I I - I - I - I - I - I - I - I - I - I Fuel tank - - - I - - - I - - - I - - - I - - - I O2 Sensor (C24SE) Replace every 160,000km (HFV6)
MIL diagnostic Indicates O2 Sensor Valve clearances (6VE1) Check and adjust if noisy (4JH1-TC, 4JA1-T) A - - A - - - A - - - A - - - A - - - A (4JJ1 (Standard Output),
4JJ1 (High Output)) - - - - - - - A - - - - - - - A - - - -
Spark plugs (C24SE) (for leaded fuel
use) - R - R - R - R - R - R - R - R - R - R
Spark plugs (C24SE) (for unleaded
fuel use) - - - - - R - - - - - R - - - - - R - -
Spark plugs
(HFV6) Replace every 120,000km Spark plug wire - - - - - - - - - - - - - - - - - - - I Fuel filter (GASOLINE) - - - R - - - R - - - R - - - R - - - R (4JH1-TC, 4JA1-T) - - R - - R - - R - - R - - R - - R - - ** (4JJ1 (Standard Output),
4JJ1 (High Output)) Replace the fuel filter when the fuel filter indicator light is lit.
Fuel pump in fuel tank
(4JJ1 (Standard Output),
4JJ1 (High Output)) - - - - - - - I - - - - - - - I - - - -
Engine / Accessory drive belt
(C24SE) - - - - - - - - - I - - - - - - - - - I

(HFV6) Replace every 100,000km Fan belt tension and damage
(DIESEL) I I I I I I I I I I I I I I I I I I I I
* Exhaust system
I I - I - I - I - I - I - I - I - I - I Engine coolant concentration (HFV6) - I - I - I - I - I - I - I - I - I - R (C24SE) - I - I - I - I - R - I - I - I - I - R (DESEL) - I - I - I - I - I - I - I - I - I - I Engine coolant
(4JJ1 (Standard Output),
4JJ1 (High Output)) Change every 2 years
Cooling system for water leakage - I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clogs or damage - I - I - I - I - I - I - I - I - I - I
Timing belt
(C24SE) - - - - - - - - - - - - - - - I - - - - Replace every 120,000km Timing belt (6VE1) Replace every 160,000km

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MAINTENANCE AND LUBRICATION 0B-5
MAINTENANCE SCHEDULE (For EUROPE)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Replace the fuel filter (**Mark) when the fuel filter indicator light is lit.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."
Diesel Engine model (ACEA B2 specification engine oil)

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate

SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
DIESEL ENGINE * Engine oil - R - R - R - R - R - R - R - R - R - R* Engine oil filter - - - R - - - R - - - R - - - R - - - ROil leakage and contamination I I I I I I I I I I I I I I I I I I I I Idling speed and acceleration I I I I I I I I I I I I I I I I I I I I Fan belt tension and damage I I I I I I I I I I I I I I I I I I I I Exhaust system I I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clog of damage - I I I I I I I I I I I I I I I I I I I
Valve clearance
- - - A - - - A - - - A - - - A - - - A * Air cleaner element I I I I I I I R I I I I I I I R I I I I ** Fuel filter Replace the fuel filter when the fuel filter indicator light is lit. Engine coolant concentration - I - I - I - I - I - I - I - I - I - I Cooling system for water leakage - I - I - I - I - I - I - I - I - I - I CLUTCH Clutch fluid I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and play I I - I - I - I - I - I - I - I - I - I TRANSMISSION OR TRANSMISSION
W ITH TRANSFER CASE

* Manual transmission with fluid - R - I - - - R - - - I - - - R - - - I * Transfer case oil (MT) - - - I - - - I - - - I - - - I - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Gear control mechanism for
looseness - - - I - - - I - - - I - - - I - - - I
* Automatic transmission fluid - - - I - - - I - - - I - - - I - - - I * Transfer case oil (AT)
- - - I - - - - - - - I - - - - - - - I PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear - I - I - I - I - I - I - I - I - I - I Universal joints and sliding sleeve (4W D) - L - L - L - L - L - L - L - L - L - L
FRONT AND REAR AXLE * Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I
Front axle shaft boot for damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I

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ISUZU KB P190 2007

MAINTENANCE AND LUBRICATION 0B-7

Diesel Engine model (Engine oil that meet or exceeds ACEA B3 specification)
I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate

SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
DIESEL ENGINE * Engine oil - - - R - - - R - - - R - - - R - - - R*
Engine oil filter
- - - R - - - R - - - R - - - R - - - R
Oil leakage and contamination I I I I I I I I I I I I I I I I I I I I Idling speed and acceleration I I I I I I I I I I I I I I I I I I I I Fan belt tension and damage I I I I I I I I I I I I I I I I I I I I Exhaust system I I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clog of damage - - - I - - - I - - - I - - - I - - - I
Valve clearance
- - - A - - - A - - - A - - - A - - - A * Air cleaner element I I I I I I I R I I I I I I I R I I I I ** Fuel filter Replace the fuel filter when the fuel filter indicator light is lit. Engine coolant concentration - - - I - - - I - - - I - - - I - - - I Cooling system for water leakage - - - I - - - I - - - I - - - I - - - I CLUTCH Clutch fluid I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and play I I - I - I - I - I - I - I - I - I - I TRANSMISSION OR TRANSMISSION
W ITH TRANSFER CASE

* Manual transmission with fluid - - - R - - - I - - - R - - - I - - - I * Transfer case oil (MT) - - - R - - - I - - - R - - - I - - - I Oil leakage - - - I - - - I - - - I - - - I - - - I Gear control mechanism for
looseness - - - - - - - - - - - I - - - - - - - -
* Automatic transmission fluid - - - I - - - I - - - I - - - I - - - I * Transfer case oil (AT)
- - - R - - - I - - - R - - - I - - - R PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear - I - I - I - I - I - I - I - I - I - I Universal joints and sliding sleeve
(4W D) - L - L - L - L - L - L - L - L - L - L
FRONT AND REAR AXLE
* Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I Front axle shaft boot for damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I STEERING Power steering fluid I I I I I I I R I I I I I I I R I I I I Oil leakage I I I I I I I I I I I I I I I I I I I I * Steering system for looseness or
damage - I - I - I - I - I - I - I - I - I - I
Power steering hose
- I - I - I - I - I - I - I - R - I - I Steering wheel play I I I I I I I I I I I I I I I I I I I I Steering function I I I I I I I I I I I I I I I I I I I I Right and left turning radius - - - I - - - I - - - I - - - I - - - I W heel alignment - - - I - - - I - - - I - - - I - - - I Joint ball for oil leakage or damage - I - I - I - I - I - I - I - I - I - I Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I


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ISUZU KB P190 2007

6E-234 Engine Control System (4JH1)
DTC P1690 (Symptom Code 4) (Flash Code 77)
Circuit Description
The malfunction indicator lamp (MIL) is located on the
instrument panel cluster (IPC). The battery voltage is
supplied to the MIL. The engine control module (ECM)
turns the MIL ON by grounding the MIL control circuit.
After a fixed time passes, the ECM turns OFF the MIL
with the ignition ON and the engine OFF. The MIL has
the following functions:
• The MIL informs the driver that a malfunction has
occurred and the vehicle should be taken in fo
r
service as soon as possible.
• The MIL illuminates during a bulb test and a
system test.
•
A DTC will be stored if a MIL is requested by the
ECM.
If the ECM detects an open circuit or short circuit on the
MIL control circuit, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC

• The ECM detects a low voltage condition on the
MIL control circuit for longer than 3 seconds when
the MIL is commanded OFF.
Action Taken When the DTC Sets • The ECM does not illuminates the MIL when the
diagnostic runs and fails.
Condition for Clearing the DTC • A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.

DTC P1690 (Symptom Code 4) (Flash Code 77)
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or Engine Control Module (ECM)
Connector End Views

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 ON the ignition, with the engine OFF.
3. Perform the Malfunction Indicator Lamp (MIL) test with the scan tool.
4. Command the MIL ON with the scan tool.
Does the MIL turn ON when commanded ON with
the scan tool? 

Go to Step 3 Go to Step 4
3 Command the MIL OFF with the scan tool. Does the MIL OFF? 

Go to Step 17 Go to Step 10
4 1. Turn OFF the ignition.
2. Inspect the Meter (15A) fuse (C-14) in the cabin fuse block.
Is the Meter (15A) fuse (C-14) open? 

Go to Step 5 Go to Step 6
5 Replace the Meter (15A) fuse (C-14). If the fuse continues to open, repair the short to ground on one
of the circuits that fed by the Meter (15A) fuse (C-14)
or replace the shorted attached component fed by
the Meter (15A) fuse (C-14).
Did you complete the repair? 

Go to Step 19 
6 1. Turn OFF the ignition.
2. Disconnect the engine control module (ECM) harness connector.
3. Turn ON the ignition, with the engine OFF.
4. Connect a 3-amp fused jumper wire between the MIL control circuit of the ECM harness connector
(pin 42 of C-56 connector) and a known good
ground.
Does the MIL illuminate? 

Go to Step 11 Go to Step 7

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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-237
DTC P1690 (Symptom Code 8) (Flash Code 77)
Circuit Description
The malfunction indicator lamp (MIL) is located on the
instrument panel cluster (IPC). The battery voltage is
supplied to the MIL. The engine control module (ECM)
turns the MIL ON by grounding the MIL control circuit.
After a fixed time passes, the ECM turns OFF the MIL
with the ignition ON and the engine OFF. The MIL has
the following functions:
• The MIL informs the driver that a malfunction has
occurred and the vehicle should be taken in fo
r
service as soon as possible.
• The MIL illuminates during a bulb test and a
system test.
•
A DTC will be stored if a MIL is requested by the
ECM.
If the ECM detects a short to battery or ignition voltage
on the MIL control circuit, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC
• The ECM detects a high voltage condition on the
MIL control circuit for longer than 1 second when
the MIL is commanded ON.

Action Taken When the DTC Sets
• The ECM does not illuminates the MIL when the
diagnostic runs and fails.
Condition for Clearing the DTC
• A history DTC clears after 40 consecutive driving
cycles without a fault. Or clear with the scan tool.
Diagnostic Aids
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
Test Description
The number below refers to the step number on the
diagnostic table.
3. If the control circuit of the MIL between the ECM and
the IPC is normal, the control circuit voltage low DTC
P1690 (Symptom Code 4) will set.
4. If the control circuit of the MIL between the ECM and
the IPC is normal, the control circuit voltage low DTC
P1690 (Symptom Code 4) will set.

DTC P1690 (Symptom Code 8) (Flash Code 77)
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or Engine Control Module (ECM)
Connector End Views

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 ON the ignition, with the engine OFF.
3. Perform the Malfunction Indicator Lamp (MIL) test with the scan tool.
4. Command the MIL ON with the scan tool.
Does the MIL turn ON when commanded ON with
the scan tool? 

Go to Diagnostic Aids Go to Step 3
3 1. Turn OFF the ignition. 2. Remove the instrument panel cluster (IPC) in order to disconnect the IPC harness B-23
connector.
3. Disconnect the IPC harness B-23 connector.
4. Turn ON the ignition, with the engine OFF.
5. Monitor the Diagnostic Trouble Code (DTC) Information with the scan tool.
Does DTC P1690 (Symptom Code 4) set, but not
DTC P1690 (Symptom Code 8)? 

Go to Step 5 Go to Step 4
4 1. Test the control circuit of the MIL between the engine control module (ECM) (pin 42 of C-56
connector) and the IPC (pin 17 of B-23
connector) for a short to battery or ignition
voltage.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition? 

Go to Step 7 Go to Step 6

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ISUZU KB P190 2007

6E-284 Engine Control System (4JH1)
Important:
To prevent possible electrostatic discharge damage,
follow these guidelines: • Do not touch the ECM connector pins or soldered
components on the ECM circuit board.
• Do not open the replacement part package until
the part is ready to be installed.
• Before removing the part from the package,
ground the package to a known good ground on
the vehicle.
• If the part has been handled while sliding across
the seat, while sitting down from a standing
position, or while walking a distance, touch a
known good ground before installing the part.
• Charge by induction occurs when a person with
well insulated shoes stands near a highly charged
object and momentarily touches ground. Charges
of the same polarity are drained off leaving the
person highly charged with opposite polarity.
Malfunction Indicator Lamp (MIL) Operation
The malfunction indicator lamp (MIL) is located in the
instrument panel cluster (IPC). The MIL will display the
following symbols when commanded ON:



RTW 76ESH004001
The MIL indicates that an emission or performance
related fault has occurred and vehicle service is
required. The following is a list of the modes o
f
operation for the MIL: • The MIL illuminates for approximately 2 seconds
when the ignition switch is turned ON, with the
engine OFF. This is a bulb test to ensure the MIL
is able to illuminate.

•
The MIL remains illuminated after the engine is
started if the ECM detects a fault. A DTC is stored
any time the ECM illuminates the MIL due to an
emission or performance related fault.

Engine Control Component Description
Accelerator Pedal Position (APP) Sensor & Idle
Switch






RTW 66ESH001301
The accelerator pedal position (APP) sensor is mounted
on the throttle assembly. The engine control module
(ECM) uses the APP sensor s to determine the amount
of acceleration or deceleration desired by the person
driving the vehicle via the fuel injection control.
The idle switch is also mounted on the intake throttle
assembly. The idle switch is part of the APP senso
r
assembly. The idle switch is a normally closed type
switch. W hen the accelerator pedal is released, the idle
switch signal to the ECM is low voltage.








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ENGINE MECHANICAL (4JK1/4JJ1) 6A-103
6. Measure the gap between the piston and the inner
diameter of the cylinder block.
Inner diameter of the cylinder block. • Use a cylinder bore dial indicator to measure
the cylinder block inner diameter both in the
thrust and radial directions in the designated
position.
• Measurement position (from the upper surface
of the cylinder block) 20 mm (0.79 in)
• Measure the cylinder block inner diamete
r
based on the average value of the actual
measurement values on 6 positions.
Cylinder block inner diameter mm (in)
95.421 – 95.450 (3.75673 – 3.75787)






LNW 61ASH006401
Legend
1. 20 mm (0.79 in)
2. Radial
3. Thrust

Piston outside diameter
• Use a micrometer to measure the outside
diameter of the piston in the right angle to the
piston pin in the designated position.
• Measurement position (from the bottom surface
of the piston) 11.00 mm (0.43 in).






RTW 56ASH023101
Legend
1. 11 mm (0.43 in)

Gap between the piston and the inner
diameter of the cylinder block mm (in)
Standard 0.082 – 0.100 (0.0032 – 0.0039)
NOTE:
If the gap exceeds the standard value, replace the
piston or rebore the cylinder block.
7. Piston replacement • The head of piston has a marking of grade A, B
or C.
• Refer to “Cylinder Block” if over size piston is
installed.

Piston Grade (Service Part) mm (in)
A 95.330 – 95.339 (3.75314 – 3.75350)
B 95.340 – 95.349 (3.75354 – 3.75389)
C 95.350 – 95.359 (3.75393 – 3.75428)


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6E-4 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
Diagnostic Trouble Code (DTC) Type
Definitions
Emission Related DTC
Action Taken When the DTC Sets - Type A • The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Freeze Frame/ Failure Records.
Action Taken When the DTC Sets - Type B • The ECM illuminates the MIL on the second consecutive driving cycle when the diagnostic runs
and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The first time the
diagnostic fails, the ECM stores this information in
the Failure Records. If the diagnostic reports a
failure on the second consecutive driving cycle, the
ECM records the operating conditions at the time
of failure and stores this information in the Freeze
Frame and updates the Failure Records.
Conditions for Clearing the MIL/ DTC - Type A or
Ty p e B
• The ECM turns OFF the MIL after 3 consecutive driving cycles when the diagnostic runs and does
not fail. (Euro 4 Specification)
• The ECM turns OFF the MIL after 1 driving cycle when the diagnostic runs and does not fail. (Except
Euro 4 Specification)
• A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported. • Use a scan tool to clear the MIL and the DTC.
Non-Emissions Related DTCs
Action Taken When the DTC Sets - Type C
• The ECM illuminates the Service Vehicle Soon (SVS) lamp when the diagnostic runs and fails.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Failure Records.
Conditions for Clearing the SVS Lamp/ DTC - Type
C
• The ECM turns OFF the SVS lamp after 1 driving cycle when the diagnostic runs and does not fail.
• A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported.
• Use a scan tool to clear the SVS lamp and the DTC.
Action Taken When the DTC Sets - Type D • The ECM will not illuminate the MIL or SVS lamp.
• The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this
information in the Failure Records.
Conditions for Clearing the DTC - Type D • A current DTC clears when the diagnostic runs and passes after 1 driving cycle.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported.
• Use a scan tool to clear the DTC.
Diagnostic Trouble Code (DTC) List
DTC Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification
(Standard Output)
P0016 16 C AA Crankshaft Position - Camshaft Position Correlation
P0045 33 A A- Turbocharger Boost Control Solenoid Circuit
P0087 225 A AA Fuel Rail/ System Pressure Too-Low
P0088 118 A AA Fuel Rail/ System Pressure Too-High (First Stage)
P0088 118 C AA Fuel Rail/ System Pressure Too-High (Second Stage)
P0089 151 A AA Fuel Pressure Regulator Performance
P0091 247 A AA Fuel Pressure Regulator Control Circuit Low
P0092 247 A AA Fuel Pressure Regulator Control Circuit High

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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

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-49
Cam/ Crank Sensor Signal Synchronization Status Asynchronous/ No
Crank Signal/ Synchronous Synchronous Synchronous
Engine Runtime Time (hour: minute: second) Va r i e s
Va r i e s
Vehicle Speed km/h / MPH0 km/h / 0 MPH 0 km/h / 0 MPH
Transmission Gear Out of gear/ 1st/ 2nd/ 3rd/ 4th/ 5th Out of gear
Out of gear
Starter Switch On/OffOn On
Ignition Switch On/OffOn On
Ignition Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Battery Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Fuel Pump Relay Command On/ Off OnOn
Swirl Control Solenoid Command On/ Off OnOn
Fuel Filter Switch On/ OffOn On
A/C Request Signal On/ OffOff Off
A/C Relay Command On/ OffOff Off
Park/ Neutral Switch Neutral/ In Gear NeutralNeutral
Glow Relay Command On/ OffOff Off
Glow Plug Lamp Command On/ Off OffOff
Brake Switch 1 Applied/ Released Released Released
Brake Switch 2 Applied/ Released Released Released
Clutch Pedal Switch Applied/ Released ReleasedReleased
Cruise Main Lamp Command On/ Off OffOff
Cruise Main Switch On/ OffOff Off
Cruise Cancel Switch On/ OffOn On
Cruise Resume Switch On/ OffOff Off
Cruise Set Switch On/ OffOff Off
MIL Command (Malfunction Indicator Lamp) On/ Off
Off Off
SVS Lamp Command (Service Vehicle Soon) On/ Off
Off Off
Limp Home Mode None/ 1/ 2/ 3/ 4 None None
Distance While MIL is Activated km/ Mile 0 km/ 0 Mile0 km/ 0 Mile
Engine Runtime With MIL Active minutes 00
Total Engine Overspeed Event Counter VariesVaries
Total Engine Coolant
Overtemperature Event Counter
Varies Varies
Total Fuel Temperature
Overtemperatrure Event Counter
Varies Varies
Total Intake Air Temperature Overtemperaure Event Counter
Varies Varies
Immobilizer Function Programmed Ye s / N o
Ye s Ye s
Wrong Immobilizer Signal Yes/ NoNo No
Scan Tool Parameter Units Displayed Typical Data Value at Engine Idle Typical Data Value at 2000RPM

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ISUZU KB P190 2007