Nissan X-Trail 32. Manual — part 1000
P148C EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
EC-1129
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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EC
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P148C EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
DTC Description
INFOID:0000000010935823
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Exhaust throttle valve stuck
• Exhaust electric throttle control actuator
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P148C is displayed with DTC P1481 or P1482, first perform the trouble diagnosis for DTC P1481 or
P1482.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
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 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 3 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1129, "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:0000000010935824
1.
CHECK DTC PRIORITY
If DTC P148C is displayed with DTC P1481 or P1482, first perform the trouble diagnosis for DTC P1481 or
P1482.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
CHECK ECM HARNESS CONNECTOR CONNECTIONS
1.
Turn ignition switch OFF.
2.
Check ECM harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P148C
EXHAUST AIR FLAP FUNCTION
(Exhaust air flap function)
• 1.DEF: NO RESPONSE FROM THE
VALVE MOTOR
• Exhaust throttle valve regulation error.
• ECM detects an incorrect position of the exhaust throttle valve.
EC-1130
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P148C EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
3.
CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR HARNESS CONNECTOR CONNEC-
TIONS
Check exhaust electric throttle control actuator harness connector connection.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT
Check the power supply of the exhaust electric throttle control actuator.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Perform trouble diagnosis for power supply circuit.
5.
CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Check exhaust electric throttle control actuator circuit for open and short.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
DTC CONFIRMATION PROCEDURES
1.
Erase DTC.
2.
Perform DTC confirmation procedure again. Refer to
Is the DTC P148C displayed again?
YES
>> GO TO 7.
NO
>> INSPECTION END
7.
CHECK EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
Perform
EC-1131, "Component Inspection (Exhaust Throttle Position Sensor)"
tion (Exhaust Throttle Control Motor)"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 8.
8.
REPLACE EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace exhaust electric throttle control actuator.
2.
.
+
-
Voltage
Exhaust electric throttle control ac-
tuator
Connector
Terminal
F154
5
Ground
Battery voltage
+
+
Continuity
ECM
Exhaust electric throttle
control actuator
Connector
Terminal
Connector
Terminal
F118
104
F154
1
Existed
113
3
117
2
132
5
147
6
P148C EXHAUST ELECTRIC THROTTLE CONTROL ACTUATOR
EC-1131
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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EC
N
P
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>> INSPECTION END
Component Inspection (Exhaust Throttle Control Motor)
INFOID:0000000010935825
1.
CHECK EXHAUST THROTTLE CONTROL MOTOR
1.
Disconnect exhaust electric throttle control actuator harness connector.
2.
Check the resistance between exhaust throttle control motor terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace exhaust electric throttle control actuator.
Component Inspection (Exhaust Throttle Position Sensor)
INFOID:0000000010935826
1.
CHECK EXHAUST THROTTLE POSITION SENSOR
1.
Turn ignition switch ON.
2.
Check the voltage between ECM terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace exhaust electric throttle control actuator.
Exhaust electric throttle control actua-
tor
Resistance
+
-
Terminal
5
6
2.65 - 3.25
Ω
ECM
Voltage
+
-
Terminal
113
117
0.2 – 4.8 V
EC-1132
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P1512 STARTER MOTOR
P1512 STARTER MOTOR
Description
INFOID:0000000010935829
ECM multiplies operation counter of starter motor which operated in operation with key switch and operation
with restart and memorizes it.
DTC Description
INFOID:0000000010935830
DTC DETECTION LOGIC
POSSIBLE CAUSE
Starter motor
FAIL-SAFE
STOP/START SYSTEM
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If the other DTC Confirmation Procedure is performed right before this procedure, the ignition switch must be
turned OFF and wait for 10 seconds or more to start this procedure.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 3 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC-1132, "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:0000000010935831
1.
REPLACE STARTER MOTOR
Replace starter motor. Refer to
STR-39, "R9M : Removal and Installation"
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1512
STARTER
(Starter)
• 1.DEF: NO OPERATION
• 2.DEF: INCORRECT OPERATION
When starter motor operating counter which ECM memorized is 250,000
times 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
—
Prohibit the stop/start system operation
from the next time
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