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
.
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
EC-208, "Component Inspection (MAP Sensor)"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace manifold absolute pressure (MAP) sensor. Refer to
6.
CHECK INTERMITTENT INCIDENT
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 >
[VK56VD]
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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
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