Nissan Pathfinder. Manual — part 514
EC-362
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1217 ENGINE OVER TEMPERATURE
>> Repair or replace malfunctioning part.
4.
CHECK RADIATOR CAP
Check radiator cap. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace radiator cap. Refer to
CO-15, "Removal and Installation"
5.
CHECK THERMOSTAT
Check thermostat. Refer to
CO-24, "Removal and Installation"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace thermostat. Refer to
CO-24, "Removal and Installation"
6.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
EC-205, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace engine coolant temperature sensor. Refer to
CO-26, "Removal and Installation"
7.
OVERHEATING CAUSE ANALYSIS
If the cause cannot be isolated, check the
>> INSPECTION END
P1225 TP SENSOR
EC-363
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
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M
A
EC
N
P
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P1225 TP SENSOR
DTC Logic
INFOID:0000000009178275
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009178276
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct. Refer to
EM-24, "Removal and Installation"
.
3. Check if foreign matter is caught between the throttle valve and
the housing.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside, and then perform throttle valve
closed position learning. Refer to
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-26, "Removal and Installation"
.
2. Go to
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1225
CTP LEARNING-B1
(Closed throttle position learning
performance)
Closed throttle position learning value is excessively
low.
• Electric throttle control actuator
(TP sensor 1 and 2)
JSBIA2864ZZ
EC-364
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1226 TP SENSOR
P1226 TP SENSOR
DTC Logic
INFOID:0000000009178277
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Repeat steps 2 and 3 for 32 times.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009178278
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct. Refer to
EM-24, "Removal and Installation"
.
3. Check if foreign matter is caught between the throttle valve and
the housing.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside, and then perform throttle valve
closed position learning. Refer to
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-26, "Removal and Installation"
2. Go to
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1226
CTP LEARNING-B1
(Closed throttle position learn-
ing performance)
Closed throttle position learning is not performed
successfully, repeatedly.
• Electric throttle control actuator
(TP sensor 1 and 2)
JSBIA2864ZZ
P1550 BATTERY CURRENT SENSOR
EC-365
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1550 BATTERY CURRENT SENSOR
DTC Logic
INFOID:0000000009178279
DTC DETECTION LOGIC
NOTE:
If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and wait at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009178280
1.
CHECK BATTERY CURRENT SENSOR POWER SUPPLY
1. Disconnect battery current sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between battery current sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1550
BAT CURRENT SENSOR
(Battery current sensor circuit
range/performance)
The output voltage of the battery current
sensor remains within the specified
range while engine is running.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Battery current sensor
Battery current sensor
Ground
Voltage (V)
Connector
Terminal
F34
1
Ground
Approx. 5
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