2011 INFINITI QX56 Factory Service Manual

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Page 2305 of 5598

INFINITI QX56 2011 Factory Service Manual
P0191 FRP SENSOREC-281
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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NP
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Is inspection result normal?
YES >> Check intermittent incident. Refer to
GI-40, "Intermittent Incident".
NO

Page 2306 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-282
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0191 FRP SENSOR
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Replace FRP sensor. Refer to
EM-48, "
Exploded View".
+−
Condition Va l u e

Page 2307 of 5598

INFINITI QX56 2011 Factory Service Manual
P0196 EOT SENSOREC-283
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0196 EOT SENSOR
DTC LogicINFOID:0000000006288301
DTC DETECTION LOGIC
NOTE:
If DTC P0196 is displayed with P0

P0196 EOT SENSOREC-283
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0196 EOT SENSOR
DTC LogicINFOID:0000000006288301
DTC DETECTION LOGIC
NOTE:
If DTC P0196 is displayed with P0197 or P0198, fi
rst perform the trouble diagnosis for DTC P0197,
P0198. Refer to EC-285, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and let it idle for 5 minutes and 10 seconds.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> EC-284, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
WITH CONSULT-III
1. Select “DATA MONITOR” mode with CONSULT-III.
2. Check that “COOLAN TEMP/S” indicates above 80 °C (176 °F).
If it is above 80 °C (176 °F), go to the following steps.
If it is below 80 °C (176 °F), warm engine up until “COOLAN TEMP/S” indicates more than 80 °C (176 °F).
Then perform the following steps.
3. Turn ignition switch OFF and soak the vehicle in a cool place.
4. Turn ignition switch ON.
NOTE:
Do not turn ignition switch OFF until step 8.
5. Select “DATA MONITOR” mode with CONSULT-III.
6. Check the following.
If they are within the specifi ed range, perform the following steps.
If they are out of the specified range, soak the vehicle to meet t he above conditions. Then perform the fol-
lowing steps.
DTC No. Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P0196 EOT SENSOR
(Engine oil temperature sen-
sor range/performance) Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage signals
from engine coolant temperature sensor and in-
take air temperature sensor. Harness or connectors
(The EOT sensor circuit is open or
shorted)
Engine oil temperature sensor
COOLAN TEMP/S Below 40 °C (104 °F)
INT/A TEMP SE Below 40 °C (104 °F)
Difference between “COOLAN TEMP/S” and “INT/A TEMP SE” Within 6 °C (11 °F)
Revision: 2010 May2011 QX56

Page 2308 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-284
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0196 EOT SENSOR
NOTE:

Do not turn ignition switch OFF.
If it is supposed to need a long period of time, do not deplete the battery.
7. Start engine and l

Page 2309 of 5598

INFINITI QX56 2011 Factory Service Manual
P0197, P0198 EOT SENSOREC-285
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0197, P0198 EOT SENSOR
DTC LogicINFOID:0000000006217832
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDUR

Page 2310 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-286
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0197, P0198 EOT SENSOR
YES >> GO TO 3.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK ENGINE OIL TEMPERATURE

Page 2311 of 5598

INFINITI QX56 2011 Factory Service Manual
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 INJECTOR
EC-287
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0201, P0202, P0203, P0204, P0205,
P0206, P0207, P0208 INJE

P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 INJECTOR
EC-287
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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P0201, P0202, P0203, P0204, P0205,
P0206, P0207, P0208 INJECTOR
DTC LogicINFOID:0000000006217835
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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.
TESTING CONDITION:
Before performing the foll owing procedure, comfirm that battery voltage is 11 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Start the engine and let it idle at least 30 seconds.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-287, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006217836
1.PERFORM TROUBLE DIAGNOSIS FOR INJECTOR
Refer to EC-498, "
Component Function Check".
Is inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace error-detected parts.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0201 No.1 fuel injector circuit ECM detects No. 1 injector circuit
is open or shorted.
The fuel injector circuit is open or shorted
Fuel injector
ECM
P0202 No. 2 fuel injector circuit
ECM detects No. 2 injector circuit
is open or shorted.
P0203 No. 3 fuel injector circuit ECM detects No. 3 injector circuit
is open or shorted.
P0204 No. 4 fuel injector circuit ECM detects No. 4 injector circuit
is open or shorted.
P0205 No. 5 fuel injector circuit ECM detects No. 5 injector circuit
is open or shorted.
P0206 No. 6 fuel injector circuit ECM detects No. 6 injector circuit
is open or shorted.
P0207 No. 7 fuel injector circuit ECM detects No. 7 injector circuit
is open or shorted.
P0208 No. 8 fuel injector circuit ECM detects No. 8 injector circuit
is open or shorted.
Revision: 2010 May2011 QX56

Page 2312 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-288
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0222, P0223 TP SENSOR
P0222, P0223 TP SENSOR
DTC LogicINFOID:0000000006217837
DTC DETECTION LOGIC
NOTE:
If DTC P0222 or P0223 is displayed with DTC P
0643, p

EC-288
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0222, P0223 TP SENSOR
P0222, P0223 TP SENSOR
DTC LogicINFOID:0000000006217837
DTC DETECTION LOGIC
NOTE:
If DTC P0222 or P0223 is displayed with DTC P
0643, perform the trouble diagnosis for DTC P0643.
Refer to EC-381, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confi rm that battery voltage is 8 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-288, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006217838
1.CHECK THROTTLE POSITION SE NSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
3. Check the voltage between electric throttle control actuator harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
2.CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between electric thro ttle control actuator and ECM harness connector.
DTC No.Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P0222 TP SEN 1/CIRC-B1
(Throttle position sensor 1
circuit low input) An excessively low voltage from the TP
sensor 1 is sent to ECM.
Harness or connectors
(TP sensor 1 circuit is open or shorted.)
Electric throttle control actuator (TP sensor 1)
P0223 TP SEN 1/CIRC-B1
(Throttle position sensor 1
circuit high input) An excessively high voltage from the TP
sensor 1 is sent to ECM.
Electric throttle control actuator
Ground Voltage (V)
Connector Terminal
F66 2 Ground Approx. 5
Revision: 2010 May2011 QX56

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