Nissan X-Trail 32. Instruction — part 975
P025A FUEL PUMP
EC-1029
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
CHECK FUEL PUMP RELAY CIRCUIT-II
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK 20A FUSE
1.
Disconnect 20A fuse (No. 61) from IPDM E/R.
2.
Check 20A fuse.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace 20A fuse.
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F117
38
F72
76
Existed
EC-1030
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P025B FUEL PUMP CONTROL MODULE CONTROL
P025B FUEL PUMP CONTROL MODULE CONTROL
DTC Description
INFOID:0000000010935706
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (FPCM command circuit is open or shorted.)
• FPCM
FAIL-SAFE
Not applicable
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-1030, "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:0000000010935707
1.
CHECK COMMAND VOLTAGE
Check FPCM command voltage as the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK FUEL PUMP CONTROL MODULE COMMAND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector and FPCM harness connector.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P025B
FUEL PUMP MODULE CONTROL CIR-
CUIT
(Fuel pump module control circuit range/
performance)
• 1.DEF: OPERATION TEMPERATURE
TOO HIGH
• CC.0: SHORT CIRCUIT TO EARTH
• CC.1: SHORT-CIRCUIT TO +12V
• CO: OPEN CIRCUIT
• FPCM command circuit is open or shorted.
• ECU temperature is too high.
ECM
Condition
Voltage
Connector
+
–
Terminal
E79
20
8
Ignition switch: OFF
⇒
ON (fuel pump activated)
0 – 6.74 V
Ignition switch ON (fuel pump not activated)
0.05 V
P025B FUEL PUMP CONTROL MODULE CONTROL
EC-1031
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
Check the continuity between ECM harness connector and FPCM harness connector.
Is the inspection result normal?
YES
>> Replace FPCM. Refer to
EC-1231, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
+
−
Continuity
ECM
FPCM
Connector
Terminal
Connector
Terminal
E79
20
B133
9
Existed
EC-1032
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
P0335 CKP SENSOR
P0335 CKP SENSOR
DTC Description
INFOID:0000000010935708
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (The sensor circuit is open or shorted.)
• Crankshaft position sensor
• Signal plate
FAIL-SAFE
• EGR valve is closed position
• Throttle control motor is opened
• Prohibit DPF regeneration
• Prohibit start/stop system
• Torque limitation
• Engine speed limitation
• ESP deactivated
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC P0335 can not duplicate.
>> Proceed to
EC-1032, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010935709
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 CKP SENSOR HARNESS CONNECTOR CONNECTIONS
Check crankshaft position (CKP) sensor harness connector connection.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK CKP SENSOR
EC-1033, "Component Inspection (Crankshaft Position Sensor)"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace error-detected parts.
4.
CHECK GEAR TOOTH
Visually check for chipping flywheel gear tooth.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0335
ENGINE SPEED SENSOR SIGNAL
(Crankshaft position sensor “A” circuit)
• 1.DEF: NO SIGNAL
• 2.DEF: IMPLAUSIBLE SIGNAL
• Crankshaft position sensor signal is not detected by ECM when engine
is running.
• Crankshaft position sensor signal is not in the normal pattern when en-
gine is running.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст