ISUZU KB P190 2007 Workshop Repair Manual

ENGINE DRIVEABILITY AND EMISSIONS 6E–201
20 Replace the VSS. Was the problem solved? — Verify repair Go to Step 21
21 Is the ECM programmed with the latest software release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved? — Verify repair Go to Step 22
22 Replace the ECM. Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. — Verify repair —
Step
Action Value(s) Yes No

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ISUZU KB P190 2007

6E–202 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0562 SYSTEM VOLTAGE LOW
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The engine control module (ECM) monitors the system
voltage on the ignition feed terminal to the ECM. A
system voltage Diagnostic Trouble Code will set
whenever the voltage is below a calibrated value.
Diagnostic Aids
• If the Diagnostic Trouble Code sets when an accessory is operated, check for a poor connection or
excessive current draw.
• Check for open circuits or shorts to ground on the ECM’s battery or ignition inputs.
Diagnostic Trouble Code (DTC) P0562 System Voltage Low
Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0562 D System Voltage Low Battery voltage is below 11V.No fail-safe function.
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” performed?
—Go to Step 2Go to
On Board
Diagnostic
(OBD) System Check

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ENGINE DRIVEABILITY AND EMISSIONS 6E–203
2 1. Connect the Tech 2. 2. Review and record the failure information.
3. Select “F0: Read DTC Infor By Priority” in “F0: Diagnostic Trouble Code”.
Is the DTC P0562 stored as “Present Failure”? — Go to Step 3Refer to
Diagnostic Aids and Go to Step
3
3 1. Using the Tech2, ignition “On” and engine “Off”. 2. Select “Clear DTC Information” with the Tech2 andclear the DTC information.
3. Operate the vehicle and monitor the “F5: Failed This Ignition” in “F2: DTC Information”.
Was the DTC P0562 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids and Go to Step
4
4 1. Using the Tech 2, ignition “On” and engine “On”. 2. Monitor the “Ignition Voltage” in the data display.
3. Load the electrical system by turning on the headlights, etc..
Does the Tech 2 indicate enough ignition voltage? 10 - 14.5V Go to Step 6Go to Step 5
5 Using the DVM and check the battery voltage at the battery terminal.
Does the tester indicate enough battery voltage?
10 - 14.5V Go to Step 6Check the
charging
system, charge or replace the battery
6 Check for poor/faulty connection at the ECM connector. If a poor/faulty connection is found, repair
as necessary.
Was the problem found?
— Verify repair Go to Step 7
7 Check for poor/faulty connection of the ECM ground at the inlet manifold. If a poor/faulty connection is
found, repair as necessary.
Was the problem found?
— Verify repair Go to Step 8
8 Is the ECM programmed with the latest software release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved? — Verify repair Go to Step 9
9 Replace the ECM. Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. — Verify repair —
Step
Action Value(s) Yes No
16
2
17
12
C-56(J2)
E-60(J1)
E-72

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6E–204 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0563 SYSTEM VOLTAGE HIGH
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The engine control module (ECM) monitors the system
voltage on the ignition feed terminals to the ECM. A
system voltage Diagnostic Trouble Code will set whenever the voltage is above a calibrated value.Diagnostic Aids
Check for a faulty charging system components.
Diagnostic Trouble Code (DTC) P0563 System Voltage High
Code Type
DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0563 A System Voltage High Battery voltage is above 16V.No fail-safe function.
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” performed?
—Go to Step 2Go to
On Board
Diagnostic
(OBD) System Check

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ENGINE DRIVEABILITY AND EMISSIONS 6E–205
2 1. Connect the Tech 2. 2. Review and record the failure information.
3. Select “F0: Read DTC Infor By Priority” in “F0: Diagnostic Trouble Code”.
Is the DTC P0563 stored as “Present Failure”? — Go to Step 3Refer to
Diagnostic Aids and Go to Step
3
3 1. Using the Tech2, ignition “On” and engine “Off”. 2. Select “Clear DTC Information” with the Tech2 andclear the DTC information.
3. Operate the vehicle and monitor the “F5: Failed This Ignition” in “F2: DTC Information”.
Was the DTC P0563 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids and Go to Step
4
4 1. Using the Tech 2, ignition “On” and engine “On”. 2. Monitor the “Ignition Voltage” in the data display.
3. Load the electrical system by turning on the headlights, etc..
Does the Tech 2 indicate correct ignition voltage? Less than 16V Go to Step 5Check the
charging
system and Go to Step 5
5 Is the battery jamp start cable incorrectly connecting? —Ve r if y
procedure Go to Step 6
6 Is the ECM programmed with the latest software release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved? — Verify repair Go to Step 7
7 Replace the ECM. Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. — Verify repair —
Step
Action Value(s) Yes No

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6E–206 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0601 ECM MEMORY CHECKSUM
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The engine control module (ECM) used in this vehicle
utilizes an electrically erasable programmable read-only
memory (EEPROM). The EEPROM contains program
information and the calibrations required for engine,
transmission, and powertrain diagnostics operation.
Unlike the PROM used in past applications, the
EEPROM is not replaceable. When the ECM is
replaced or a calibration update is required, the ECM must be programmed using a Tech 2.Diagnostic Aids
• Diagnostic Trouble Code P0601 indicates that the
contents of the EEPROM have changed since the
ECM was programmed. The only possible repair is
ECM reprogramming or replacement. Check service
bulletins to program the replacement ECM with the
correct software and calibration for the vehicle.
Diagnostic Trouble Code (DTC) P0601 ECM Memory Checksum
Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0601 A ECM Memory Checksum ECM memory area error.Engine control disabled.
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” performed?
—Go to Step 2Go to
On Board
Diagnostic
(OBD) System Check
2 1. Connect the Tech 2. 2. Review and record the failure information.
3. Select “F0: Read DTC Infor By Priority” in “F0: Diagnostic Trouble Code”.
Is the DTC P0601 stored as “Present Failure”? — Go to Step 3Refer to
Diagnostic Aids and Go to Step
3
3 1. Using the Tech2, ignition “On” and engine “Off”. 2. Select “Clear DTC Information” with the Tech2 andclear the DTC information.
3. Operate the vehicle and monitor the “F5: Failed This Ignition” in “F2: DTC Information”.
Was the DTC P0601 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids
4 Is the ECM programmed with the latest software release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved? — Verify repair Go to Step 5
5 Replace the ECM. Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. — Verify repair —

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ENGINE DRIVEABILITY AND EMISSIONS 6E–207
DIAGNOSTIC TROUBLE CODE (DTC) P0602 ECU PROGRAMMING ERROR
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The engine control module (ECM) used in this vehicle
utilizes an electrically erasable programmable read-only
memory (EEPROM). The EEPROM contains program
information and the calibrations required for engine,
transmission, and powertrain diagnostics operation.
Unlike the PROM used in past applications, the
EEPROM is not replaceable. When the ECM is replaced or a calibration update is required, the ECM
must be programmed using a Tech 2.
Diagnostic Aids
• Diagnostic Trouble Code P0602 indicates when non programmed ECM is used without service
programming system (SPS). The replacement ECM
must be programmed.
Diagnostic Trouble Code (DTC) P0602 ECU Programming Error
Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0602 - ECU Programming Error ECM memory area error.Engine control disabled.
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2Go to
On Board
Diagnostic
(OBD) System Check
2 1. Connect the Tech 2.
2. Review and record the failure information.
3. Select “F0: Read DTC Infor By Priority” in “F0: Diagnostic Trouble Code”.
Is the DTC P0602 stored as “Present Failure”? — Go to Step 3Refer to
Diagnostic Aids
3 Download the latest software to the ECM using the
“SPS (Service Programming System)”.
Is the action complete? — Verify repair —

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6E–208 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0650 MALFUNCTION INDICATOR LAMP (MIL) CONTOROL CIRCUIT MALFUNCTION
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The check engine lamp should always be illuminated
and steady with ignition “ON” and the engine stopped.
Ignition feed voltage is supplied directly to the check
engine lamp indicator. The Engine Control Module
(ECM) turns the check engine lamp “ON” by grounding
the check engine lamp driver circuit. The check engine
lamp should not remain “ON” with the engine running
and no DTC(s) set. A steady check engine lamp with
the engine running and no DTC(s) suggests a short to
ground in the check engine lamp driver circuit.
Diagnostic Aids
An intermittent may be caused by a poor connection,
rubbed-through wire insulation, or a wire broken inside
the insulation. Check for the following items:
• Poor connection or damaged harness - Inspect the ECM harness and connectors for improper mating,
broken locks, improperly formed or damaged
terminals, poor terminal-to-wire connection, and
damaged harness.
Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0650 A Malfunction Indicator Lamp (MIL) Con- trol Circuit Malfunction Check engine lamp circuit open, short to
ground or short to voltage circuit. No fail-safe function.

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ENGINE DRIVEABILITY AND EMISSIONS 6E–209
Diagnostic Trouble Code (DTC) P0650
Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
Step Action Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” performed?
—Go to Step 2Go to
On Board
Diagnostic
(OBD) System Check
2 1. Connect the Tech 2. 2. Review and record the failure information.
3. Select “F0: Read DTC Infor By Priority” in “F0: Diagnostic Trouble Code”.
Is the DTC P0650 stored as “Present Failure”? — Go to Step 3Refer to
Diagnostic Aids and Go to Step
3
3 1. Using the Tech2, ignition “On” and engine “Off”. 2. Select “Clear DTC Information” with the Tech2 andclear the DTC information.
3. Operate the vehicle and monitor the “F5: Failed This Ignition” in “F2: DTC Information”.
Was the DTC P0650 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids and Go to Step
4
4 1. Ignition “On”, engine “Off”. 2. Check the “Check Engine” lamp.
Does the lamp turn “On”? — Go to Step 5Go to Step 6
5 1. Ignition “On”, engine “Off”. 2. Check the “Check Engine” lamp.
Does the lamp turn “Off”? — Go to Step 9Go to Step 7
6 Check the “Check Engine” lamp bulb. If the bulb is burnt out, repair as necessary.
Was the problem found? — Verify repair Go to Step 7
7 Check for poor/faulty connection at the meter connector and ECM connector. If a poor/faulty
connection is found, repair as necessary.
Was the problem found?
— Verify repair Go to Step 8
32
17
C-56(J2)B-24

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6E–210 ENGINE DRIVEABILITY AND EMISSIONS
8 Using the DVM and check the “Check Engine” lampcircuit.
Breaker box is available:
1. Ignition “Off”, engine “Off”.
2. Install the breaker box as type A. (ECM disconnected) Refer to 6E-88 page.
3. Remove the meter connector.
4. Check the circuit for open or short to ground circuit.
Was the problem found?
Breaker box is not available: 1. Ignition “Off”, engine “Off”.
2. Disconnect the ECM connector.
3. Remove the meter connector.
4. Check the circuit for open or short to ground circuit.
Was the problem found?
—Repair faulty
harness and verify repair Go to Step 9
9 Is the ECM programmed with the latest software release?
If not, download the latest software to the ECM using
the “SPS (Service Programming System)”.
Was the problem solved? — Verify repair Go to Step 10
10 Replace the ECM. Is the action complete?
IMPORTANT: The replacement ECM must be
programmed. Refer to section of the Service
Programming System (SPS) in this manual.
Following ECM programming, the immobilizer system
(if equipped) must be linked to the ECM. Refer to
section 11 “Immobilizer System-ECM replacement” for
the ECM/Immobilizer linking procedure. — Verify repair —
Step
Action Value(s) Yes No
J2-25
Breaker BoxB-2411
ΩΩ
C-56(J2)
B-24
3217

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ISUZU KB P190 2007