DTC CHECK ISUZU KB P190 2007 Workshop Repair Manual

6E–84 ENGINE DRIVEABILITY AND EMISSIONS
SERVICE PROGRAMMING SYSTEM (SPS)
The procedure to program the control unit by using the
Service Programming System (SPS) software contained
in TIS2000 is explained below.
NOTE:
• If the Engine Control Module (ECM) was programmed, the Immobilizer System must be
linked to the ECM: Refer to section 11
“Immobilizer System-ECM replacement” for the
ECM/Immobilizer linking procedure.
• Should Tech2 display "SPS Procedure was not successful", engine will not start, but no DTCs
are present, low battery voltage or poor electrical
connections should be the primary suspects.
Perform the SPS procedure again after rectifying
the fault/s. IMPORTANT:
Perform the following checks before attempting to
program the control unit:
• The Tech2 PCMCIA card is programmed with The latest software release.
• The latest release of TIS2000 is loaded on the PC.
• The vehicle battery is fully charged.
• The control unit to be programmed is connected to the vehicle.
1. Preparations of TIS 2000 1. Connect Tech 2 to P/C.
2. Check to see if Hardware Key is plugged into Port.
3. Activate TIS 2000 by P/C.
4. On the activating screen of TIS2000, choose “Service Programming System”
5. On the screen of “Diagnostic Tester and Processing Program Selection”, choose the one that will comply
with the following.
• Tech-2 in use
• New programming by the existing module or new programming by the replaced/new module.
• Fixing position of the control unit. 6. Upon completion of the selection, push the button of
“Next”.

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ENGINE DRIVEABILITY AND EMISSIONS 6E–91
ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK
StepAction Value(s) Yes No
1 1. Ignition “On”, engine “Off”. 2. Check the “CHECK ENGINE” lamp (MIL).
Does the “CHECK ENGINE” lamp turn “On”? — Go to Step 2Go to
No
CHECK
ENGINE Lamp
2 1. Using the Tech 2, ignition “On” and engine “Off”. 2 . A t t e m p t t o d i s p l a y “ E n g i n e D a t a ” w i t h t h e T e c h 2 .
Does the Tech 2 display “Engine Data” and “O
2Sensor Data”? — Go to Step 3Go to Step 7
3 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Select the “Miscellaneous Test” and perform the“Malfunction Indicator Lamp” in “Lamps”.
3. Operate the Tech 2 in accordance with the Tech 2 instructions.
Does the “CHECK ENGINE” lamp turn “Off”? — Go to Step 4Go to
CHECK
ENGINE LAMP On Steady
4 Attempt to start the engine. Does the engine start and continue to “Run”? —Go to Step 5Go to
Engine
Cranks But Will Not Run
5 1. Using the Tech 2, ignition “On” and engine “Off”. 2. Select the “Read DTC Infor By Priority” in“Diagnostic Trouble Code”.
3. Are any DTCs stored? —Go to
DTC
Chart Go to Step 6
6 Compare typical scan data values displayed on the Tech 2 “Engine Data” and “O
2 Sensor Data”.
Are the displayed values within the range? —Refer to
SYMPTOM
DIAGNOSIS Refer to
TYPICAL
SCAN DATA
7 Using the DVM and check the data link connector power supply circuit.
1. Ignition “Off”, engine “Off”.
2. Check the circuit for open circuit.
Was the problem found?
—Repair faulty
harness and verify repair Go to Step 8
8 Using the DVM and check the data link connector ground circuit.
1. Ignition “Off”, engine “Off”.
2. Check the circuit for open circuit.
Was the problem found?
—Repair faulty
harness and verify repair Go to Step 9
V
16
B58
5
4B58

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6E–96 ENGINE DRIVEABILITY AND EMISSIONS
CHECK ENGINE LAMP (MIL) “ON” STEADY
Circuit description
The check engine lamp should always be illuminated
and steady for about five seconds 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.
Check Engine Lamp (MIL) “ON” Steady
Step Action Value(s) Yes No
1 1. Ignition “Off”, engine “Off”. 2. Disconnect the ECM connector.
3. Ignition “On”.
Was the “CHECK ENGINE” lamp turned on? — Go to Step 2Go to Step 4

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6E–98 ENGINE DRIVEABILITY AND EMISSIONS
FUEL METERING SYSTEM CHECK
Some failures of the fuel metering system will result in
an “Engine Cranks But Will Not Run” symptom. If this
condition exists, refer to the Cranks But Will Not Run
chart. This chart will determine if the problem is caused
by the ignition system, the ECM, or the fuel pump
electrical circuit.
Refer to Fuel System Electrical Test for the fuel system
wiring schematic.
If there is a fuel delivery problem, refer to Fuel System
Diagnosis , which diagnoses the fuel injectors, the fuel
pressure regulator, and the fuel pump.
Followings are applicable to the vehicles with
closed Loop System:
If a malfunction occurs in the fuel metering system, it
usually results in either a rich HO2S signal or a lean
HO2S signal. This condition is indicated by the HO2S
voltage, which causes the ECM to change the fuel
calculation (fuel injector pulse width) based on the
HO2S reading. Changes made to the fuel calculation
will be indicated by a change in the long term fuel trim
values which can be monitored with a Scan Tool. Ideal
long term fuel trim values are around 0%; for a lean
HO2S signal, the ECM will add fuel, resulting in a fuel
trim value above 0%. Some variations in fuel trim values
are normal because all engines are not exactly the
same. If the evaporative emission canister purge is 02
status may be rich condition. 02 status indicates the
lean condition, refer to DTC P1171 for items which can
cause a lean HO2S signal.
FUEL INJECTOR COIL TEST PROCEDURE
AND FUEL INJECTOR BALANCE TEST
PROCEDURE
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart:
2. Relieve the fuel pressure by connecting 5-8840- 0378-0 T-Joint to the fuel pressure connection on the
fuel rail.
Caution: In order to reduce the risk of fire and
personal injury, wrap a shop towel around the
fuel pressure connection. The towel will absorb
any fuel leakage that occurs during the
connection of the fuel pressure gauge. Place the
towel in an approved container when the
connection of the fuel pressure gauge is
complete.
Place the fuel pressure gauge bleed hose in an
approved gasoline container.
With the ignition switch OFF open the valve on the
fuel pressure gauge.
3. Record the lowest voltage displayed by the DVM after the first second of the test. (During the first
second, voltage displayed by the DVM may be
inaccurate due to the initial current surge.)
Injector Specifications:
• The voltage displayed by the DVM should be within the specified range.
• The voltage displayed by the DVM may increase throughout the test as the fuel injector windings
warm and the resistance of the fuel injector
windings changes. Resistance Ohms
Voltage Specification at
10°C-35°C (50°F-95°F)
11.8-12.6 5.7-6.6

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ENGINE DRIVEABILITY AND EMISSIONS 6E–113
ECM DIAGNOSTIC TROUBLE CODES (DTC)Ty p e A
•Emission related.
• Requests illumination of the MIL (Malfunction Indicator Lamp = Check Engine Lamp) of the first trip with a fail.
• Stores a history DTC on the first trip.
• Stores a freeze frame (If empty).
• Stores a fail record.
• Updates the fail record each time the diagnostic test fails.
Ty p e B
•Emission related.
• “Armed” after one trip with fail.
• “Disarmed” after one trip with a pass.
• Requests illumination of the MIL on the second consecutive trip with a fail.
• Store a history DTC on the second consecutive trip with a fail. (The DTC will be armed after the first fail.)
• Stores a freeze frame on the second consecutive trip with a fail (If empty).
• Stores a fail record when the first test fails (not dependent on consecutive trip).
• Updates the fail record each time the diagnostic test fails.
Ty p e D
• Non emission related.
• Does not request illumination of any lamp.
• Stores a history DTC on the first trip.
• Does not store a freeze frame.
• Stores fail record when test fails.
• Updates the fail record each time the diagnostic test fails.

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ENGINE DRIVEABILITY AND EMISSIONS 6E–11 7
P0351 A Ignition 1 Control Circuit #1 or #4cylinder ignition signals are not
detected consecutively. No fail-safe function.
Consecutive ignition signals are detected. 1. Ignition coil module 1 harness open
circuit, short to ground or short to voltage
circuit.
2. Ignition coil module malfunction.
3. ECM malfunction. J1-19
P0352 A Ignition 2 Control Circuit #2 or #3 cylinder ignition signals are not
detected consecutively. 1. Ignition coil module 2 harness open circuit,
short to ground or short to voltage circuit.
2. Ignition coil module malfunction.
3. ECM malfunction. J1-18
P0443 B EVAP Emission Control System Purge Control Circuit EVAP purge solenoid circuit open, short to
ground or short to voltage circuit. No fail-safe function.
EVAP purge solenoid circuit is correct
condition. 1. Solenoid harness open circuit, short to
ground or short to voltage circuit.
2. Solenoid malfunction.
3. ECM malfunction. J1-5
P0502 B Vehicle Speed Sensor Circuit Low Input 1. No DTC relating to MAP sensor, TPS, ECT sensor, injector control circuit and
ignition control circuit.
2. Engine is running.
3. Vehicle speed is below 3km/h in power condition or 2km/h in deceleration
condition. ECM uses 0km/h condition as
substitute. VSS circuit correct condition.
1. Sensor harness open circuit, short to
ground circuit or short to voltage circuit.
2. Poor connector connection.
3. VSS malfunction.
4. ECM malfunction. J2-23
P0562 D System Voltage Low Battery voltage is below 11V.No fail-safe function.Battery voltage is between 11V and 16V. 1. Battery power feed harness open circuit
or short to ground circuit.
2. ECM ground harness open or poor connection.
3. Poor connector connection.
4. Battery malfunction.
5. Charge system malfunction.
6. ECM malfunction. -
P0563 A System Voltage High Battery voltage is above 16V. 1. Charge system malfunction.
2. Battery jump start cable misconnect.
3. ECM malfunction. -
P0601 A ECM Memory Checksum ECM memory area error.Engine control disabled.Memory are is OK. ECM malfunction. -
P0602 - ECU Programming Error ECM memory area error.Engine control disabled.Memory are is OK. ECM is not programmed. -
P0650 A Malfunction Indicator Lamp (MIL) Control Circuit Malfunction Check engine lamp circuit open, short to
ground or short to voltage circuit. No fail-safe function.
Check engine lamp circuit is correct
condition. 1. Solenoid harness open circuit, short to
ground or short to voltage circuit.
2. Solenoid malfunction.
3. ECM malfunction. J2-32
Code Type
DTC Name DTC Setting Condition Fail-Safe (Back Up)Recovery Condition Related Failure PartsRelated
ECM
Pin No.

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6E–118 ENGINE DRIVEABILITY AND EMISSIONSP1167 D Fuel Supply System Rich During
Deceleration Fuel Cutoff 1. No DTC relating to MAP sensor, TPS,
EVAP purge, ECT sensor, CKP sensor,
VSS, injector control circuit and ignition
control circuit.
2. O
2 sensor bank 1 output voltage is more
than 550mV in deceleration fuel cutoff
mode. No fail-safe function.
O
2 sensor output voltage is below 550mV. 1. Sensor harness open or short to ground
circuit.
2. O
2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. IAC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. EVAP purge solenoid valve malfunction.
9. Ignition system malfunction.
10. Spark plug malfunction. 11. ECM malfunction. J2-6/
J2-21
P1171 D Fuel Supply System Lean During Power Enrichment 1. No DTC relating to MAP sensor, TPS,
EVAP purge, ECT sensor, CKP sensor,
VSS, injector control circuit and ignition
control circuit.
2. Engine coolant temperature is more than 60deg. C.
3. Mass air flow is below 13.5m/s.
4. O
2 sensor bank 1 output voltage is below
350mV in power enrichment mode. No fail-safe function.
O
2 sensor output voltage is more than
350mV. 1. Sensor harness open or short to ground
circuit.
2. O
2 sensor malfunction.
3. MAF sensor output is incorrect.
4. Air intake line malfunction.
5. IAC valve malfunction.
6. Low fuel pressure.
7. Injector malfunction.
8. ECM malfunction. J2-6/
J2-21
P1625 B ECM System Reset ECM reset has occurred other than “On ”. Engine control disabled. Memory are is OK. 1. Electrical interference.
2. Magnetic interference.
3. ECM malfunction. -
P1626 - Immobilizer No Signal No response from immobilizer control unit. 1. Engine does not start.
2. Check engine lamp flash.No recovery.
1. ECM and immobilizer control unit
communication circuit open circuit, short to
ground circuit or short to voltage circuit.
2. ECM malfunction.
3. Immobilizer control unit malfunction.
4. Transponder key malfunction. J2-23/
J2-32
P1631 - Immobilizer Wrong Signal Received response is not correct. 1. ECM malfunction.
2. Immobilizer control unit malfunction.
3. Transponder key malfunction. -
P1648 - Wrong Security Code Entered Received incorrect security code. 1. ECM malfunction.
2. Immobilizer control unit malfunction.
3. Transponder key malfunction. -
P1649 - Immobilizer Function Not Programmed Immobilizer function is not programmed in the ECM. ECM malfunction.
-
P1693 B Tachometer Output Low Voltage Tacho output circuit short to ground circuit. No fail-safe function. Tacho output circuit is correct condition. 1. Tacho output circuit short to ground circuit.
2. Poor connector connection.
3. ECM malfunction. J2-25
Code Type
DTC Name DTC Setting Condition Fail-Safe (Back Up)Recovery Condition Related Failure PartsRelated
ECM
Pin No.

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ENGINE DRIVEABILITY AND EMISSIONS 6E–119
DIAGNOSTIC TROUBLE CODE (DTC) P0107 MANIFOLD ABSOLUTE PRESSURE CIRCUIT LOW INPUT
Condition for setting the DTC and action taken when the DTC sets
Circuit Description
The manifold absolute pressure (MAP) sensor responds
to changes in intake manifold pressure. The MAP
sensor signal voltage to the engine control module
(ECM) varies from below 2 volts at idle (low manifold
pressure) to above 4 volts with the ignition ON, engine
not running or at wide-open throttle (high manifold
pressure).
A “speed density” method of determining engine load is
used on the 2.4L engine. This is calculated using inputs
from the MAP sensor, the CKP Sensor, and the Intake Air Temperature (IAT) sensor. The MAP sensor is the
main sensor used in this calculation, and measuring
engine load is its main function.
The ECM monitors the MAP signals for voltages outside
the normal range (10-104 kPa) of the MAP sensor. If the
ECM detects a MAP signal voltage that is excessively
low, Diagnostic Trouble Code P0107 will be set.
Diagnostic Aids
Check for the following conditions:
• Poor connection at ECM - Inspect harness
Code Type DTC Name DTC Setting Condition Fail-Safe (Back Up)
P0107 A Manifold Absolute Pressure Circuit Low Input 1. No DTC relating to TPS.
2. Throttle position is more than 0% if engine speed is below 1000rpm, or throttle posi-
tion more than 5% if engine speed is more
than 1000rpm.
3. MAP sensor output is below 12kPa. The ECM uses default manifold absolute
pressure value based on engine speed
and throttle position.

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6E–120 ENGINE DRIVEABILITY AND EMISSIONS
connectors for backed-out terminals, improper
mating, broken locks, improperly formed or damaged
terminals, and poor terminal-to-wire connection.
• If these codes are also set, it could indicate a problem with the 5 Volt reference circuit.
• Damaged harness - Inspect the wiring harness for damage, short to ground, short to battery positive,
and open circuit. If the harness appears to be OK,
observe the MAP display on the Tech 2 while moving
connectors and wiring harnesses related to the
sensor. A change in the display will indicate the
location of the fault.
Diagnostic Trouble Code (DTC) P0107
Manifold Absolute Pressure Circuit Low Input
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 P0107 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 P0107 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids and Go to Step
4
4 Check for poor/faulty connection at the MAP sensor or ECM connector. If a poor/faulty connection is found,
repair as necessary.
Was the problem found?
— Verify repair Go to Step 5
5 Visually check the MAP. Was the problem found? — Go to Step 9 Go to Step 6
6 Using the DVM and check the MAP sensor power supply circuit.
1. Ignition “On”, engine “Off”.
2. Disconnect the MAP sensor connector.
3. Check the circuit for open or short to ground circuit.
Was the DVM indicated specified value?
Approximately 5.0V Go to Step 8Go to Step 7
16
31 24E85
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V
E85
3

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6E–124 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Aids
Check for the following conditions:
• Poor connection at ECM - Inspect harness connectors for backed-out terminals, improper
mating, broken locks, improperly formed or damaged
terminals, and poor terminal-to-wire connection.
• If these codes are also set, it could indicate a problem with the 5 Volt reference circuit.
• Damaged harness - Inspect the wiring harness for damage; an open circuit, a short to ground, or a short
to voltage. If the harness appears to be OK, observe
the MAP display on the Tech 2 while moving
connectors and wiring harnesses related to the
sensor. A change in the display will indicate the
location of the fault.
Diagnostic Trouble Code (DTC) P0108
Manifold Absolute Pressure Circuit High Input
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 P0108 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 P0108 stored in this ignition cycle? — Go to Step 4Refer to
Diagnostic Aids and Go to Step
4
4 Check for poor/faulty connection at the MAP sensor or ECM connector. If a poor/faulty connection is found,
repair as necessary.
Was the problem found?
— Verify repair Go to Step 5
5 Visually check the MAP sensor. Was the problem found? — Go to Step 11Go to Step 6
16
31 24E85
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