Infiniti QX56 (Z62). Manual - part 557

EC-206

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

P0106 MANIFOLD ABSOLUTE PRESSURE SENSOR

P0106 MANIFOLD ABSOLUTE PRESSURE SENSOR

DTC Logic

INFOID:0000000006288274

DTC DETECTION LOGIC

NOTE:
If DTC P0106 is displayed with other DTC, first perform the trouble diagnosis for other DTC.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

If engine will not start or stops soon, wait at least 10 seconds with engine stopped (Ignition switch ON) instead
of running engine at idle speed.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

 WITH CONSULT-III

1.

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

2.

Start engine and warm it up to normal operating temperature.

3.

Accelerate the vehicle from 0 to 88 km/h (0 to 55 MPH) under the following conditions:

CAUTION:

Always drive at a safe speed.
NOTE:
• Accelerate with the accelerator pedal kept constant.
• The acceleration at engine speed 2,000 and 3,000 rpm allows easy diagnoses.

4.

Check 1st trip DTC.

 WITHOUT CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Drive the vehicle under the following conditions.

3.

With selector lever in D position, accelerate the vehicle from 0 to 88 km/h (0 to 55 MPH) under the follow-
ing conditions:

CAUTION:

Always drive at a safe speed.
NOTE:
• Accelerate with the accelerator pedal kept constant.
• The acceleration at engine speed 2,000 and 3,000 rpm allows easy diagnoses.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0106

ABSL PRES SEN/CIRC
[Manifold absolute pressure (MAP) 
circuit range/performance]

A difference exceeding the specified 
value develops between a value 
transmitted from the manifold abso-
lute pressure (MAP) sensor to ECM 
and an estimated intake pressure of 
intake manifold calculated by ECM.

• Harness or connectors

(The manifold absolute pressure 
(MAP) sensor circuit is open or 
shorted.)

• manifold absolute pressure (MAP) 

sensor

• Intake air leaks

ACCEL SEN 1

1.4 – 2.0 V

Selector lever

D position

P0106 MANIFOLD ABSOLUTE PRESSURE SENSOR

EC-207

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

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4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-207, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006288275

1.

CHECK INTAKE SYSTEM

Check the following for connection.
• Air duct
• Vacuum hoses
• Intake air passage between air duct and intake manifold.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning part.

2.

CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY CIRCUIT FOR OPEN

AND SHORT

1.

Disconnect manifold absolute pressure (MAP) sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between manifold absolute pressure (MAP) sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

3.

CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR GROUND CIRCUIT FOR OPEN AND

SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between manifold absolute pressure (MAP) sensor harness connector and ECM har-
ness connector.

4.

Also check harness for short to ground and power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

4.

CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND

SHORT

1.

Check the continuity between manifold absolute pressure (MAP) sensor harness connector and ECM har-
ness connector.

Accelerator pedal position sensor 1

Ground

Voltage (V)

Connector

Terminal

E110 (Without 

ICC)

3

Ground

1.4 – 2.0

E67 (With ICC)

10

Manifold absolute pressure (MAP) sensor

Ground

Voltage (V)

Connector

Terminal

F65

1

Ground

Approx. 5

Manifold absolute pressure (MAP) sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F65

3

F110

70

Existed

EC-208

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

P0106 MANIFOLD ABSOLUTE PRESSURE SENSOR

2.

Also check harness for short to ground and power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

5.

CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR

Refer to 

EC-208, "Component Inspection (MAP Sensor)"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace manifold absolute pressure (MAP) sensor. Refer to 

EM-30, "Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (MAP Sensor)

INFOID:0000000006288276

1.

CHECK MAP SENSOR-I

1.

Turn ignition switch OFF.

2.

Start engine and warm it up to normal operating temperature.

3.

Turn ignition switch OFF, wait at least 5 seconds and then turn ON.

4.

Check the voltage between ECM harness connector terminals as follows.

NOTE:
• To avoid the influence of intake manifold vacuum, check the voltage 1 or more minutes past after engine

is stopped.

• Because the sensor is absolute pressure sensor, output value may differ depending on atmospheric

pressure and altitude.

5.

Measure the atmospheric pressure.
NOTE:
As the atmospheric pressure described on the synoptic chart is the value at sea level, compensate the
pressure with the following chart.

6.

Check the manifold absolute pressure sensor value corresponding to the atmospheric pressure.

Manifold absolute pressure (MAP) sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F65

2

F110

67

Existed

ECM

+

–

Connector

Terminal

Connector

Terminal

F110

67

F110

70

Altitude (m)

Compensated pressure (hPa)

0

0

200

-24

400

-47

600

-70

800

-92

1000

-114

1500

-168

2000

-218

P0106 MANIFOLD ABSOLUTE PRESSURE SENSOR

EC-209

< DTC/CIRCUIT DIAGNOSIS >

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Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace MAP sensor.

2.

CHECK MAP SENSOR-II

1.

Start engine and let it idle.

2.

Check intake manifold vacuum.

3.

Check the voltage between ECM harness connector terminals as per the following.

4.

Confirm the difference of the voltage when engine is stopped and at idling is within the values shown in
the following chart.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace MAP sensor.

Atmospheric pressure (hPa)

Voltage (V)

800

3.1 – 3.7

850

3.3 – 3.9

900

3.5 – 4.1

950

3.8 – 4.3

1000

4.0 – 4.6

1050

4.2 – 4.8

JMBIA0870GB

ECM

+

–

Connector

Terminal

Connector

Terminal

F110

67

F110

70

Intake manifold vacuum [kPA (mmHg)]

Voltage difference (V)

-40 (-300)

1.5 – 2.0

-53.3 (-400)

2.0 – 2.6

-66.7 (-500)

2.6 – 3.2

-80 (-600)

3.2 – 3.8