Isuzu KB P190. Service manual — part 571

6E–114

ENGINE DRIVEABILITY AND EMISSIONS

Code

Type

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM

Pin No.

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
position 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.

MAP sensor output is more than 12kPa.

1. Sensor power supply circuit open or short

to ground circuit.

2. Sensor signal circuit open or short to

ground circuit.

3. Poor connector connection.

4. MAP sensor malfunction.

5. ECM malfunction.

J1-24/

J1-31

P0108

A

Manifold Absolute Pressure Circuit High
Input

1. No DTC relating to TPS.

2. Throttle position is below 15% if engine

speed is below 2500rpm, or throttle
position is below 35% if engine speed is
more than 2500rpm.

3. Engine run time is longer than 10

seconds.

4. MAP sensor output is more than 103kPa.

MAP sensor output is below 103kPa.

1. Sensor power supply circuit short to

voltage circuit.

2. Sensor signal circuit short to voltage

circuit.

3. Sensor ground circuit open or short to

voltage circuit.

4. Poor connector connection.

5. MAP sensor malfunction.

6. ECM malfunction.

J1-16/
J1-24/

J1-31

P0112

A

Intake Air Temperature Sensor Low Input

1. No DTC relating to VSS.

2. Vehicle speed is more than 25km/h.

3. Engine run time is longer than 120

seconds.

4. IAT sensor output is more than 149 deg.

C.

The ECM uses 20 deg. C condition
as substitute.

IAT sensor output is below 149 deg. C.

1. Sensor signal circuit short to ground

circuit.

2. IAT sensor malfunction.

3. ECM malfunction.

J2-22

P0113

A

Intake Air Temperature Sensor High Input

1. No DTC relating to VSS & ECT sensor.

2. Vehicle speed is below 70km/h.

3. 3Engine coolant temperature is more than

-8 deg. C.

4. Engine run time is longer than 120

seconds.

5. Mass air flow is below 30g/s.

6. IAT sensor output is below -38 deg. C.

IAT sensor output is more than -38 deg. C.

1. Sensor signal circuit open or short to

voltage circuit.

2. Sensor ground circuit open or short to

voltage circuit.

3. Poor connector connection

4. IAT sensor malfunction.

5. ECM malfunction.

J2-1/

J2-22

P0117

A

Engine Coolant Temperature Sensor Low
Input

1. Engine run time is longer than 120

seconds.

2. ECT sensor output is more than 149 deg.

C.

The ECM uses default engine
coolant temperature value based
on intake air temperature and
engine run time.

ECT sensor output is below 149 deg. C.

1. Sensor signal circuit short to ground

circuit.

2. ECT sensor malfunction.

3. ECM malfunction.

J1-27

P0118

A

Engine Coolant Temperature Sensor High
Input

1. Engine run time is longer than 120

seconds.

2. ECT sensor output is below -38 deg. C.

ECT sensor output is more than -38 deg. C.

1. Sensor signal circuit open or short to

voltage circuit.

2. Sensor ground circuit open or short to

voltage circuit.

3. Poor connector connection

4. ECT sensor malfunction.

5. ECM malfunction.

J1-27/

J1-32

ENGINE DRIVEABILITY AND EMISSIONS

6E–115

P0122

A

Throttle Position Sensor Low Input

TPS output voltage is below 0.14V.

The ECM uses 0% condition as
substitute.

TPS output voltage is more than 0.14V.

1. Sensor power supply circuit open or short

to ground circuit.

2. Sensor signal circuit open or short to

ground circuit.

3. Poor connector connection.

4. TPS malfunction.

5. ECM malfunction.

J1-7/

J1-15/

P0123

A

Throttle Position Sensor High Input

TPS output voltage is more than 4.9V.

TPS output voltage is below 4.9V.

1. Sensor power supply circuit short to

voltage circuit.

2. Sensor signal circuit short to voltage

circuit.

3. Sensor ground circuit open or short to

voltage circuit.

4. Poor connector connection.

5. TPS malfunction.

6. ECM malfunction.

J1-7/

J1-15/

J1-32

P0131

A

O

2

Sensor Circuit Low Voltage (Bank 1

Sensor 1)

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

60 deg. C.

3. O

2

sensor bank 1 output voltage is below

50mV in “Closed Loop” condition.

“Open Loop” fuel control.

O

2

sensor bank 1 output voltage is more

than 50mV.

1. Sensor harness short to ground circuit.

2. O

2

sensor malfunction.

3. ECM malfunction.

J2-6/

J2-21

P0132

A

O

2

Sensor Circuit High Voltage (Bank 1

Sensor 1)

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

60 deg. C.

3. O

2

sensor bank 1 output voltage is more

than 952mV in “Closed Loop” condition.

O

2

sensor bank 1 output voltage is below

952mV.

1. Sensor harness short to voltage circuit.

2. O

2

sensor malfunction.

3. MAF sensor output is incorrect.

4. Air intake line malfunction.

5. IAC valve malfunction.

6. Incorrect fuel pressure.

7. Injector malfunction.

8. ECM malfunction.

J2-6/

J2-21

P0134

A

O

2

Sensor Circuit No Activity Detected

(Bank 1 Sensor 1)

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

60 deg. C.

3. Engine run time is longer than 40

seconds.

4. Mass air flow is more than 7g/s.

5. O

2

sensor bank 1 output voltage is

between 300mV and 600mV.

O

2

sensor bank 1 output voltage is below

300mV consecutively.
OR
O

2

sensor bank 1 output voltage is more

than 600mV consecutively.

1. Sensor harness open circuit.

2. O

2

sensor malfunction.

3. MAF sensor output is incorrect.

4. Air intake line malfunction.

5. IAC valve malfunction.

6. Incorrect fuel pressure.

7. Injector malfunction.

8. ECM malfunction.

J2-6/

J2-21

Code

Type

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM

Pin No.

6E–116

ENGINE DRIVEABILITY AND EMISSIONS

P0135

A

O

2

Sensor Heater Circuit (Bank 1 Sensor

1)

1. No DTC relating to MAP sensor and ECT

sensor.

2. Engine coolant temperature is more than

60 deg. C.

3. Engine run time is longer than 20

seconds.

4. MAP sensor output is more than 70kPa.

5. O

2

sensor bank 1 heater current more

than 10mA.

No fail-safe function.

O

2

sensor bank 1 heater circuit is correct

condition.

1. Heater harness open, short to ground or

short to voltage circuit.

2. O

2

sensor heater malfunction.

3. ECM malfunction.

J2-31

P0201

A

Injector 1 Control Circuit

1. Engine is running.

2. Engine speed is more than 1000rpm.

3. Injector voltage does not meet to the

battery voltage when the injector is
commanded Off or does not meet to the
0V when the injector is commanded On.

Injector circuit is correct condition.

1. Injector harness open circuit, short to

ground or short to voltage circuit.

2. Injector malfunction.

3. ECM malfunction.

J1-9

P0202

A

Injector 2 Control Circuit

J1-22

P0203

A

Injector 3 Control Circuit

J1-8

P0204

A

Injector 4 Control Circuit

J1-11

P0325

B

Knock Sensor Module Circuit

1. No DTC relating to MAP sensor.

2. Engine coolant temperature is more than

50 deg. C.

3. Engine speed is more than 1600rpm.

4. Knock sensor filter module integrated

circuit malfunction.

ECM retards ignition timing 4 deg.
C

.

Knock sensor is correct condition.

1. KS harness open circuit.

2. Poor connector connection.

3. KS sensor malfunction.

4. ECM malfunction.

J1-3/

J1-32

P0327

A

Knock Sensor Circuit

1. No DTC relating to MAP sensor.

2. Engine coolant temperature is more than

50 deg. C.

3. Engine speed is more than 1600rpm.

4. Knock sensor harness short to ground or

short to voltage circuit.

1. KS harness short to ground or short to

voltage circuit.

2. Poor connector connection.

3. KS sensor malfunction.

4. ECM malfunction.

J1-3/

J1-32

P0336

B

Crankshaft Position Sensor Circuit Range/
Performance (58X)

1. Engine is running.

2. Extra or missing pulse is detected

consecutively.

No fail-safe function.

Correct pulse is detected consecutively.

1. CKP sensor harness open circuit, short to

ground or short to voltage circuit.

2. Poor connector connection.

3. CKP sensor malfunction.

4. Pulse sensing gap incorrect.

5. Pluser malfunction.

6. Electrical interference.

7. Magnetic interference.

8. ECM malfunction.

J1-6/

J1-21

P0337

B

Crankshaft Position Sensor Circuit Low
Input (58X)

No pulse is detected during engine cranking.

1. CKP sensor harness open circuit, short to

ground or short to voltage.

2. Poor connector connection.

3. CKP sensor malfunction.

4. Pulse sensing gap incorrect.

5. Pluser malfunction.

6. Electrical interference.

7. Magnetic interference.

8. ECM malfunction.

J1-6/

J1-21

Code

Type

DTC Name

DTC Setting Condition

Fail-Safe (Back Up)

Recovery Condition

Related Failure Parts

Related

ECM

Pin No.

ENGINE DRIVEABILITY AND EMISSIONS

6E–117

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 Parts

Related

ECM

Pin No.