Nissan Qashqai J11. Manual — part 218
ECH-170
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
P0120 TP SENSOR
P0120 TP SENSOR
DTC Logic
INFOID:0000000010379064
DTC DETECTION LOGIC
NOTE:
If DTC P0120 is displayed with DTC P0641 or P0651, first perform the trouble diagnosis for DTC P0641 or
P0651. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
Turn ignition switch OFF and wait at least 12 minutes.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 12 minutes.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECH-170, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010379065
1.
CHECK ECM HARNESS CONNECTOR CONNECTION
1.
Turn ignition switch OFF.
2.
Check ECM connector connection F17.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ECM connector connection.
2.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR HARNESS CONNECTOR CONNECTION
Check electric throttle control actuator harness connector connection F46.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace electric throttle control actuator harness connector connection.
3.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT
1.
Disconnect electric throttle control actuator harness connector.
2.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
3.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0120
THROTTLE POSI SEN
[P0120]
[Throttle position sensor
(P0120)]
Implausible TP sensor position for 0.19 sec-
ond or more.
• Harness or connectors
(Throttle position sensor circuit is open or
shorted.)
• Throttle position sensor
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F46
5
F17
65
Existed
P0120 TP SENSOR
ECH-171
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
C
D
E
F
G
H
I
J
K
L
M
A
ECH
N
P
O
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR SIGNAL CIRCUIT
1.
Disconnect electric throttle control actuator harness connector.
2.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
3.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR GROUND CIRCUIT
1.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace electric throttle control actuator.
NO
>> Repair or replace error-detected parts.
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F46
4
F17
82
Existed
6
87
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F46
3
F17
90
Existed
ECH-172
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
P012A TC BOOST SENSOR
P012A TC BOOST SENSOR
DTC Logic
INFOID:0000000010500164
DTC DETECTION LOGIC
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 12 minutes.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 12 minutes.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
ECH-172, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010500165
1.
CHECK ECM HARNESS CONNECTOR CONNECTION
1.
Turn ignition switch OFF.
2.
Check ECM connector connection F18.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ECM connector connection.
2.
CHECK TURBOCHARGER BOOST SENSOR HARNESS CONNECTOR CONNECTION
Check turbocharger boost sensor harness connector connection F76.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace turbocharger boost sensor harness connector connection.
3.
CHECK TURBOCHARGER BOOST SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect turbocharger boost sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between turbocharger boost sensor harness connector and ground.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P012A
TC/SC INLET PRESSURE SEN-
SOR
(Turbocharger/supercharger inlet
pressure sensor circuit)
• Turbocharger boost sensor volt-
age signal above maximum
threshold for 1 second or more.
• Turbocharger boost sensor volt-
age signal below minimum
threshold for 1 second or more.
• Harness or connectors
(Turbocharger boost sensor circuit is
open or shorted.)
• Turbocharger boost sensor
P012A TC BOOST SENSOR
ECH-173
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
C
D
E
F
G
H
I
J
K
L
M
A
ECH
N
P
O
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK TURBOCHARGER BOOST SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
5.
CHECK TURBOCHARGER BOOST SENSOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK TURBOCHARGER BOOST SENSOR INPUT SIGNAL CIRCUIT
1.
Check the continuity between turbocharger boost sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace error-detected parts.
7.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
+
−
Voltage
(Approx.)
Turbocharger boost sensor
Connector
Terminal
F76
3
Ground
5 V
+
−
Continuity
Turbocharger boost sensor
ECM
Connector
Terminal
Connector
Terminal
F76
3
F18
137
Existed
+
−
Continuity
Turbocharger boost sensor
ECM
Connector
Terminal
Connector
Terminal
F76
1
F18
106
Existed
+
−
Continuity
Turbocharger boost sensor
ECM
Connector
Terminal
Connector
Terminal
F76
4
F18
97
Existed
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