Nissan Pathfinder. Manual — part 520
EC-386
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1574 ASCD VEHICLE SPEED SENSOR
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and electric unit (control unit). Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to
MWI-19, "CONSULT Function (METER/M&A)"
>> INSPECTION END
P1700 CVT CONTROL SYSTEM
EC-387
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
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M
A
EC
N
P
O
P1700 CVT CONTROL SYSTEM
Description
INFOID:0000000009178307
This DTC is displayed with other DTC regarding TCM. Perform the trouble diagnosis for corresponding DTC.
. When this DTC is detected, the ASCD control is canceled.
EC-388
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
Description
INFOID:0000000009178308
ECM receives input speed sensor signal from TCM via the CAN communication line. ECM uses this signal for
engine control.
DTC Logic
INFOID:0000000009178309
DTC DETECTION LOGIC
NOTE:
• If DTC P1715 is displayed with DTC UXXXX first perform the trouble diagnosis for DTC UXXXX.
• If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer
• If DTC P1715 is displayed with DTC P0340, P0345, first perform the trouble diagnosis for DTC P0340,
P0345. Refer to
.
• If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
• If DTC P1715 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
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.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Drive vehicle at a speed of more than 50 km/h (31 MPH) for at least 5 seconds.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009178310
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
.
Is the inspection result normal?
YES
TM-195, "Removal and Installation"
NO
>> Perform trouble shooting relevant to DTC indicated.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1715
IN PULY SPEED
[Input speed sensor (Pri-
mary speed sensor) (TCM
output)]
Input speed sensor signal is different
from the theoretical value calculated by
ECM from output speed sensor signal
and engine rpm signal.
• Harness or connectors
(The CAN communication line is open or shorted)
• Harness or connectors
(Input speed sensor circuit is open or shorted)
• TCM
P1800 VIAS CONTROL SOLENOID VALVE 1
EC-389
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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EC
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P
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P1800 VIAS CONTROL SOLENOID VALVE 1
DTC Logic
INFOID:0000000009178311
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CONDITIONING
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 battery voltage is more than 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009178312
1.
CHECK VIAS CONTROL SOLENOID VALVE 1 POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect VIAS control solenoid valve 1 harness connector.
3. Turn ignition switch ON.
4. Check the voltage between VIAS control solenoid valve 1 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 VIAS CONTROL SOLENOID VALVE 1 OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between VIAS control solenoid valve 1 harness connector and ECM harness con-
nector.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P1800
VIAS S/V CIRC-B1
(VIAS solenoid valve circuit bank 1)
An excessively low or high voltage signal
is sent to ECM through the VIAS control
solenoid valve 1.
• Harness or connectors
(The solenoid valve 1 circuit is open
or shorted.)
• VIAS control solenoid valve 1
VIAS control solenoid valve 1
Ground
Voltage
Connector
Terminal
F66
1
Ground
Battery voltage
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