Nissan X-Trail 32. Manual — part 970
P0115 ECT SENSOR
EC-1009
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT FOR OPEN AND SHORT
Check engine coolant temperature sensor circuit for open and short.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
EC-1009, "Component Inspection (Engine Coolant Temperature Sensor)"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace error-detected parts.
Component Inspection (Engine Coolant Temperature Sensor)
INFOID:0000000010935680
1.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
1.
Disconnect engine coolant temperature sensor harness connector.
2.
Check resistance between engine coolant temperature sensor terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace engine coolant temperature sensor.
+
-
Continuity
ECM
Engine coolant temperature
sensor
Connector
Terminal
Connector
Terminal
F118
129
F149
2
Existed
133
1
Engine coolant temperature sensor
Condition
Resistance
+
-
Terminal
2
1
Temperature
°
C (
°
F)
25 (77)
2.140 – 2.364 k
Ω
EC-1010
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0120 TP SENSOR
P0120 TP SENSOR
DTC Description
INFOID:0000000010935681
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (Throttle position sensor circuit is open or shorted.)
• Throttle position sensor
• Electric throttle control actuator
FAIL-SAFE
ENGINE CONTROL SYSTEM
• EGR valve is closed position
• Throttle control motor is opened
• CSF regeneration forbidden
• Airflow regulation cut off
• Compression test routine forbidden
• CCSL deactivated with dashboard message
• Freeshift inhibited
STOP/START SYSTEM
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1010, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010935682
1.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0120
INLET AIR FLAP POSITION SEN
(Throttle/pedal position sensor/switch “A”
circuit)
• 1.DEF: SIGNAL INCOHERENCE
• Throttle position sensor voltage sent to ECM is 4.8 V or more for 0.5 sec-
ond or more.
• Throttle position sensor voltage sent to ECM is 0.2 V or less for 0.5 sec-
ond or more.
Stop/start system operating condition in fail safe mode
Idling or driving the vehicle
Stop/start system operating
Stop
During cranking
(Restart)
Prohibit the stop/start system operation
Restart the engine
Prohibit the stop/start system operation
from the next time
P0120 TP SENSOR
EC-1011
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR HARNESS CONNECTOR CONNECTIONS
Check electric throttle control actuator harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR FITTING CONDITION
Check electric throttle control actuator fitting condition.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Adjust parts fitting condition.
4.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT FOR OPEN AND SHORT
Check electric throttle control actuator circuit for open and short.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK THROTTLE POSITION SENSOR
EC-1011, "Component Inspection (Throttle Position Sensor)"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace error-detected parts.
Component Inspection (Throttle Position Sensor)
INFOID:0000000010935683
1.
CHECK THROTTLE POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
.
4.
Turn ignition switch ON.
5.
Set selector lever to D position.
6.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning electric throttle control actuator.
+
-
Continuity
ECM
Electric throttle control actu-
ator
Connector
Terminal
Connector
Terminal
F118
103
F153
2
Existed
107
3
108
1
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
F118
107
103
Accelerator pedal: Fully released
More than 0.425
Accelerator pedal: Fully depressed
Less than 4.760
EC-1012
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0135 A/F SENSOR HEATER
P0135 A/F SENSOR HEATER
DTC Description
INFOID:0000000010935684
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (The air fuel ratio sensor heater circuit is open or shorted.)
• Air fuel ratio sensor heater
FAIL-SAFE
Stop closed-loop control
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 10 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1012, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010935685
1.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK AIR FUEL RATIO (A/F) SENSOR HARNESS CONNECTOR CONNECTIONS
Check A/F sensor harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK A/F SENSOR HEATER CIRCUIT FOR OPEN AND SHORT
Check A/F sensor circuit for open and short.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0135
PROPOR RICH SEN HEAT CIRC
(O2 sensor heater circuit bank 1 sensor 1)
• CC.0: SHORT CIRCUIT TO EARTH
• CC.1: SHORT-CIRCUIT TO +12V
• CO: OPEN CIRCUIT
• ECM detects Air Fuel Ratio Sensor Heater circuit is open for 5 seconds.
• ECM detects Air Fuel Ratio Sensor Heater circuit is short to ground for 5
seconds.
• ECM detects Air Fuel Ratio Sensor Heater circuit is short to power for 5
seconds.
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