2007 ISUZU KB P190 light

6E-158 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
DTC P0380 (Flash Code 66)
Circuit Description
The ECM controls the glow relay which supplies power
to the glow plugs based on engine coolant
temperature. In the after glow phase, the glow indicator
light is not illuminated but glow plugs remain active for
a certain period. If the ECM detects an open circuit or
short circuit on the relay control circuit, this DTC will
set.
Condition for Running the DTC • The battery voltage is more than 9 volts.
• The ignition voltage is more than 9 volts.
• The ignition switch is ON.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects a low voltage condition on the glow relay control circuit for longer than 3 second
when the relay is commanded OFF.
• The ECM detects a high voltage condition on the glow relay control circuit for longer than 3 second
when the relay is commanded ON.
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.
Test Description
The numbers below refers to the step number on the
Circuit/ System Testing.
2. Listen for an audible click when the glow relay
operates. Command both the ON and OFF states.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0380
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. Perform the Glow Relay Control with a scan tool.
3. Command the relay ON and OFF.
Does the glow relay click with each command? —
Go to Step 3 Go to Step 4
3 1. Turn OFF the ignition for 30 seconds.
2. Disconnect the engine coolant temperature (ECT) sensor harness connector in order to
gain glow ON time long enough.
3. Turn ON the ignition for 30 seconds while observing the DTC Information with a scan
tool.
Does the DTC P0380 fail this ignition? —
Go to Step 11 Go to Diagnostic
Aids

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ISUZU KB P190 2007

6E-180 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
DTC P0562 or P0563 (Flash Code 35)
Circuit Description
The ECM monitors the ignition voltage on the ignition
feed terminal to make sure that the voltage stays within
the proper range. If the ECM detects an excessively
low or high ignition voltage, DTC P0562 or P0563 will
set.
Condition for Running the DTC • The battery voltage is more than 9 volts.
Condition for Setting the DTC • The ECM detects that the ignition voltage feed circuit is less than 8 volts for 5 seconds. (DTC
P0562)
• The ECM detects that the ignition voltage feed circuit is more than 16 volts for 5 seconds. (DTC
P0563)
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. (DTC P0563)
• The ECM inhibits pilot injection. (DTC P0563)
• The ECM inhibits cruise control. (DTC P0563)
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 • A charging system problem may set this DTC.
• The weakened battery may set DTC P0562.
• Jump starting the vehicle or a battery charger may have set this DTC P0563.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0562
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. Start the engine and let idle.
4. Load the electrical system by turning ON the headlights, A/C, etc. while observing the
Ignition Voltage parameter with a scan tool.
Does the scan tool indicate more than the specified
value? 10.0 volts
Go to Diagnostic Aids Go to Step 3
3 Test the charging system. Refer to Diagnosis of
The Charging System in the Charging System
Section.
Did you find a charging system problem? —
Go to Step 4 Go to Step 5
4 Repair the charging system. Refer to Diagnosis of
The Charging System in the Charging System
Section.
Did you complete the repair? —
Go to Step 6
—

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-181
Circuit/ System Testing DTC P0563
51. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent, for a poor connection and for corrosion at the harness
connector of the ECM (pin 72 of C-58).
4. Repair the connection(s) as necessary.
Did you find and correct the condition? —
Go to Step 6 Go to Diagnostic
Aids
6 1. 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 and let idle.
5. Load the electrical system by turning ON the headlights, A/C, etc. while observing the
Ignition Voltage parameter with a scan tool.
Does the scan tool indicate more than the specified
value? 10.0 volts
Go to Step 7 Go to Step 3
7 Observe the DTC Information with a scan tool.
Are there any DTCs that you have not diagnosed? —
Go to DTC List System OK
Step
Action Value(s)Yes No
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 Was the vehicle recently jump started or a battery
charger placed on the battery? —
Go to Step 7 Go to Step 3
3 1. Install a scan tool.
2. Start the engine and let idle.
3. Observe the Ignition Voltage parameter with the scan tool.
Does the scan tool indicate less than the specified
value? 16.0 volts
Go to Diagnostic Aids Go to Step 4
4 Test the charging system. Refer to Diagnosis of
The Charging System in the Charging System
Section.
Did you find a charging system problem? —
Go to Step 5 Go to Diagnostic
Aids
5 Repair the charging system. Refer to Diagnosis of
The Charging System in the Charging System
Section.
Did you complete the repair? —
Go to Step 6
—

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-183
DTC P0565 (Flash Code 515)
Circuit Description
The cruise control keeps the vehicle speed at a driver's
set speed. When the cruise main switch is turned ON,
signal is provided to the ECM and the cruise main
indicator lamp on the switch or the instrument panel
cluster will light up. If the ECM detects the cruise main
switch signal repeats ON/ OFF or continuously ON, this
DTC will set.
Condition for Running the DTC • The ignition switch is ON.
• The engine is running.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects that the cruise main switch signal is repeated ON/ OFF continuously within a
very short calibrated time.
• The ECM detects that the cruise main switch signal is stuck at the ON position (high voltage) for
longer than 15 seconds. Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
Notice: • This DTC will set if the cruise main switch continues being pushed for longer than 15
seconds.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0565
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 ON the ignition, with the engine OFF.
3. Observe the Cruise Main Switch parameter with a scan tool.
Does the scan tool indicate ON when the switch is
pushed and OFF when the switch is released? —
Go to Diagnostic Aids Go to Step 3
3 1. Turn OFF the ignition.
2. Disconnect the cruise main switch harness connector. (Remove the switch from the IP
bezel as necessary)
3. Turn ON the ignition, with the engine OFF.
Does the Cruise Main Switch indicate OFF? —
Go to Step 5 Go to Step 4
4 1. Test the signal circuit between the ECM (pin
14 of C-58) and the cruise main switch (pin 3
of B-67) 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
5 Repair or replace the cruise main switch.
Did you complete the repair or replacement? —
Go to Step 7
—
6Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement? —
Go to Step 7
—

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-185
DTC P0566 (Flash Code 516)
Circuit Description
The cruise control keeps the vehicle speed at a driver's
set speed. When the cruise main switch is turned ON,
signal is provided to the ECM and the cruise main
indicator lamp on the switch or the instrument panel
cluster will light up. The cruise cancel switch is a
normally closed type switch. When the cruise cancel
switch is applied, the switch signal to the ECM is
stopped (low voltage) and the cruise control system is
inactive. If the ECM detects the cruise cancel switch
signal repeats ON/ OFF or continuously OFF this DTC
will set.
Condition for Running the DTC • The ignition switch is ON.
• The engine is running.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects that the cruise cancel switch signal is repeated ON/ OFF continuously within a
very short calibrated time.
• The ECM detects that the cruise cancel switch signal is stuck at the OFF position (low voltage) for
longer than 40 seconds. Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
Notice: • This DTC will set if the cruise cancel switch continues being applied for longer than 40
seconds.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0566
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 ON the ignition, with the engine OFF.
3. Observe the Cruise Cancel Switch parameter with a scan tool.
Does the scan tool indicate OFF when the switch is
applied and ON when the switch is released? —
Go to Diagnostic Aids Go to Step 3
3 1. Turn OFF the ignition.
2. Disconnect the combination switch harness connector (B-59). (Remove the IP cluster
lower cover as necessary)
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between the ignition voltage feed circuit of the combination switch
harness (pin 11 of B-59 male side) and a
known good ground.
Does the test lamp illuminate? —
Go to Step 4 Go to Step 5

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-187
DTC P0567 (Flash Code 517)
Circuit Description
The cruise control keeps the vehicle speed at a driver's
set speed. When the cruise main switch is turned ON,
signal is provided to the ECM and the cruise main
indicator lamp on the switch or the instrument panel
cluster will light up. When the cruise resume/ accel.
switch is applied, the switch signal is provided to the
ECM and the vehicle speed is reset to the previous set
speed or vehicle speed is increased. If the ECM
detects the cruise resume/ accel. switch signal repeats
ON/ OFF or continuously ON, this DTC will set.
Condition for Running the DTC • The ignition switch is ON.
• The engine is running.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects that the cruise resume/ accel. switch signal is repeated ON/ OFF continuously
within a very short calibrated time.
• The ECM detects that the cruise resume/ accel. switch signal is stuck at the ON position (high
voltage) for longer than 120 seconds. Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
Notice: • This DTC will set if the cruise resume/ accel. switch continues being applied for longer than 120
seconds.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0567
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 ON the ignition, with the engine OFF.
3. Observe the Cruise Resume Switch parameter with a scan tool.
Does the scan tool indicate ON when the switch is
applied and OFF when the switch is released? —
Go to Diagnostic Aids Go to Step 3
3 1. Turn OFF the ignition.
2. Disconnect the combination switch harness connector (B-59). (Remove the IP cluster
lower cover as necessary)
3. Turn ON the ignition, with the engine OFF.
Does the Cruise Resume Switch parameter
indicate OFF? —
Go to Step 5 Go to Step 4
4 1. Test the signal circuit between the ECM (pin
29 of C-58) and the combination switch (pin 9
of B-59) 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
5 Repair or replace the combination switch.
Did you complete the repair or replacement? —
Go to Step 7
—

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-189
DTC P0568 (Flash Code 518)
Circuit Description
The cruise control keeps the vehicle speed at a driver's
set speed. When the cruise main switch is turned ON,
signal is provided to the ECM and the cruise main
indicator lamp on the switch or the instrument panel
cluster will light up. When the cruise set/ coast switch is
turned ON, the switch signal is provided to the ECM
and the vehicle speed is set or vehicle speed is
decreased. If the ECM detects the cruise set/ coast
switch signal repeats ON/ OFF or continuously ON, this
DTC will set.
Condition for Running the DTC • The ignition switch is ON.
• The engine is running.
Condition for Setting the DTC
Either of following condition is met: • The ECM detects that the cruise set/ coast switch signal is repeated ON/ OFF continuously within a
very short calibrated time.
• The ECM detects that the cruise set/ coast switch signal is stuck at the ON position (high voltage) for
longer than 120 seconds. Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
Notice: • This DTC will set if the cruise set/ coast switch continues being pushed for longer than 120
seconds.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0568
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 ON the ignition, with the engine OFF.
3. Observe the Cruise Set Switch parameter with a scan tool.
Does the scan tool indicate ON when the switch is
pushed and OFF when the switch is released? —
Go to Diagnostic Aids Go to Step 3
3 1. Turn OFF the ignition.
2. Disconnect the combination switch harness connector (B-59). (Remove the switch from
the IP bezel as necessary)
3. Turn ON the ignition, with the engine OFF.
Does the Cruise Set Switch parameter indicate
OFF? —
Go to Step 5 Go to Step 4
4 1. Test the signal circuit between the ECM (pin
30 of C-58) and the combination switch (pin
12 of B-59) 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
5 Repair or replace the combination switch.
Did you complete the repair or replacement? —
Go to Step 7
—

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-191
DTC P0571 (Flash Code 26)
Circuit Description
The brake switch is installed on the brake pedal
bracket. The brake switch 1 is a normally open type
switch and the brake switch 2 is a normally closed type
switch. When the brake pedal is pressed, the brake
switch 1 signal is provided to the ECM and the
stoplights are turned ON. Then, the brake switch 2
signal to the ECM is stopped (low voltage). If the ECM
detects the brake switch signals out of correlation, this
DTC will set.
Condition for Running the DTC • The ignition switch is ON.
Condition for Setting the DTC • The ECM detects a brake switch 1 (normally open type switch) signal and brake switch 2 (normally
closed type switch) signal correlation error for
longer than 10 seconds over 33 times since
ignition switch is ON. Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp. Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC • Refer to DTC Type Definitions for Condition for Clearing the DTC - Type D.
Diagnostic Aids • If an intermittent condition is suspected, refer to Intermittent Conditions in this section.
• Misadjusted brake switch will cause this DTC to set.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0571
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 ON the ignition, with the engine OFF.
3. Observe the Brake Switch 1 parameter with a scan tool while fully depressing and releasing
the brake pedal.
Does the scan tool indicate Applied when the brake
pedal is applied and Released when the brake
pedal is released? —
Go to Step 8 Go to Step 3
3 1. Check to ensure the brake switch is adjusted
correctly. The plunger should be all the way in
when the pedal is released, yet should not
impede with the brake pedal full upward travel.
2. Adjust the brake switch as necessary.
Did you find and correct the condition? —
Go to Step 18 Go to Step 4
4 1. Turn OFF the ignition.
2. Disconnect the brake switch harness connector.
3. Connect a test lamp between the battery voltage feed circuit of the brake switch 1
harness (pin 1 of C-44) and a known good
ground.
Does the test lamp illuminate? —
Go to Step 5 Go to Step 6

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ISUZU KB P190 2007