Nissan X-Trail 32. Manual — part 916
REFRIGERANT PRESSURE SENSOR
EC-793
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT
1.
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
2.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace error-detected parts.
5.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace refrigerant pressure sensor. Refer to
HAC-131, "Removal and Installation"
(with auto-
matic air conditioning) or
HAC-225, "Removal and Installation"
(with manual air conditioning).
NO
>> Repair or replace error-detected parts.
+
-
Continuity
Refrigerant pressure sensor
ECM
Connector
Terminal
Connector
Terminal
F42
1
E60
124
Existed
+
-
Continuity
Refrigerant pressure sensor
ECM
Connector
Terminal
Connector
Terminal
F42
2
E60
103
Existed
EC-794
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
SENSOR POWER SUPPLY2 CIRCUIT
SENSOR POWER SUPPLY2 CIRCUIT
Description
INFOID:0000000010986504
ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously
in the sensors belonging to the same group as the short-circuited sensor.
Sensor power supply 1
• APP sensor 1
• CKP sensor (POS)
• Intake manifold runner control valve position sensor
• Refrigerant pressure sensor
• TP sensor
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
Sensor power supply 2
• APP sensor 2
• CMP sensor (PHASE)
• EVT control position sensor
• EOP sensor
• MAF sensor
Diagnosis Procedure
INFOID:0000000010986505
1.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1
1.
Turn ignition switch OFF.
2.
Disconnect accelerator pedal position (APP) sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-2
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit.
3.
CHECK SENSOR POWER SUPPLY 2 CIRCUIT
1.
Disconnect following sensors harness connector.
2.
Check harness for short to power and short to ground, between the following terminals.
+
-
Voltage
(Approx.)
APP sensor
Connector
Terminal
E110
5
Ground
5V
+
+
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E110
5
E60
118
Existed
SENSOR POWER SUPPLY2 CIRCUIT
EC-795
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair short to ground or short to power in harness or connectors.
4.
CHECK COMPONENTS
Check the following.
• APP sensor 2 (Refer to
EC-761, "Component Inspection"
• Camshaft position sensor (PHASE) (Refer to
EC-681, "Component Inspection (Camshaft position sensor)"
• EVT control position sensor (Refer to
EC-715, "Component Inspection"
• EOP sensor (Refer to
EC-694, "Component Inspection"
.)
EC-607, "Component Inspection"
Is the inspection result normal?
YES
>> Refer to
GI-44, "Intermittent Incident"
.
NO
>> Replace malfunctioning component.
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F85
32
CMP sensor (PHASE)
F105
1
36
MAF sensor
F110
1
40
EOP sensor
F106
3
44
EVT control position sensor
F104
1
E60
118
APP sensor 2
E110
5
EC-796
< SYMPTOM DIAGNOSIS >
[QR25DE]
ENGINE CONTROL SYSTEM
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM
Symptom Table
INFOID:0000000010986506
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO ST
AR
T
/REST
AR
T
(EXCP
.
H
A
)
ENGINE ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK KNOCK/DET
O
NA
TION
LACK
OF POWER/
POOR
ACC
E
LERA
TION
HIGH IDL
E
/LOW
IDLE
ROUG
H IDLE/HUNTING
IDLI
NG VIBRA
T
ION
SLOW/NO RETURN T
O
IDLE
OVERHEA
T
S/W
A
TER TEMPERA
T
UR
E
HIGH
EXCESS
IVE F
U
E
L
CONSUMP
T
IO
N
EXCESS
IVE OIL CONSUMP
T
ION
BA
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
Fuel
Fuel pump circuit
1
1
2
3
2
2
2
3
2
Fuel pressure regulator system
3
3
4
4
4
4
4
4
4
4
Fuel injector circuit
1
1
2
3
2
2
2
2
Evaporative emission system
3
3
4
4
4
4
4
4
4
4
Air
Positive crankcase ventilation sys-
tem
3
3
4
4
4
4
4
4
4
4
1
Incorrect idle speed adjustment
1
1
1
1
1
Electric throttle control actuator
1
1
2
3
3
2
2
2
2
2
2
,
Ignition
Incorrect ignition timing adjustment
3
3
1
1
1
1
1
1
Ignition circuit
1
1
2
2
2
2
2
2
Main power supply and ground circuit
2
2
3
3
3
3
3
2
3
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
Intake air temperature sensor circuit
Engine coolant temperature sensor circuit
3
3
3
Air fuel ratio (A/F) sensor 1 circuit
,
,
,
Throttle position sensor circuit
2
2
,
,
,
,
Accelerator pedal position sensor circuit
3
2
1
,
,
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