Nissan Altima L32. Instruction — part 576
P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)
EC-1425
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
EC-1426
< COMPONENT DIAGNOSIS >
[VQ35DE]
P1720 VSS
P1720 VSS
Description
INFOID:0000000004362289
ECM receives two vehicle speed signals via the CAN communication line. One is sent from “ABS actuator and
electric unit (control unit)” via the combination meter, and the other is from TCM (Transmission control mod-
ule). ECM uses these signals for engine control.
DTC Logic
INFOID:0000000004362290
DTC DETECTION LOGIC
NOTE:
• If DTC P1720 is displayed with DTC UXXXX first perform the trouble diagnosis for DTC UXXXX. Refer
.
• If DTC P1720 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 20 km/h (12 MPH) or more for at least 5 seconds without depressing the brake
pedal.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
EC-1426, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000004362291
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
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)”
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1720
Vehicle speed sensor
(TCM output)
The difference between two vehicle speed
signals is out of the specified range.
• Harness or connectors
(Secondary speed sensor circuit is open or
shorted.)
• Harness or connectors
(Wheel sensor circuit is open or shorted.)
• TCM
• Secondary speed sensor
• ABS actuator and electric unit (control unit)
• Wheel sensor
• Combination meter
P1720 VSS
EC-1427
< COMPONENT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> perform trouble shooting relevant to DTC indicated.
3.
CHECK COMBINATION METER FUNCTION
.
>> INSPECTION END
EC-1428
< COMPONENT DIAGNOSIS >
[VQ35DE]
P1800 VIAS CONTROL SOLENOID VALVE 1
P1800 VIAS CONTROL SOLENOID VALVE 1
Description
INFOID:0000000004362292
The VIAS control solenoid valve 1 cuts the intake manifold vacuum signal for power valve 1 control. It
responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum signal from the intake
manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and sends the vac-
uum signal to the power valve actuator 1.
DTC Logic
INFOID:0000000004362293
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
>> Go to
EC-1428, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000004362294
1.
CHECK VIAS CONTROL SOLENOID VALVE 1 POWER SUPPLY CIRCUIT
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 har-
ness 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 FOR OPEN AND SHORT
1. Turn ignition switch OFF.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1800
VIAS control solenoid valve 1
circuit
An excessively low or high voltage signal
is sent to ECM via the VIAS control sole-
noid 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
F63
1
Ground
Battery voltage
PBIB0080E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст