Nissan Maxima Service and Repair Manual: P1723 speed sensor
Description
The secondary speed sensor detects the revolution of parking gear and generates a pulse signal. The pulse signal is sent to the TCM, which converts it into vehicle speed.
The primary speed sensor detects the primary pulley revolution speed and sends a signal to the TCM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT
-
Turn ignition switch ON.
-
Select "Data Monitor" in "TRANSMISSION".
-
Start engine and maintain the following conditions for at least 5 consecutive seconds.
VEHICLE SPEED : 10 km/h (6 MPH) or more
ACC PEDAL OPEN : More than 1.0/8
RANGE : "D" position
ENG SPEED : 450 rpm or more
Driving location : Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test.
Diagnosis Procedure
1.CHECK STEP MOTOR FUNCTION
Perform "Self Diagnostic Results" in "TRANSMISSION".
2.CHECK SECONDARY SPEED SENSOR SYSTEM
Check secondary speed sensor system. Refer to TM-60, "DTC Logic".
3.CHECK PRIMARY SPEED SENSOR SYSTEM
Check primary speed sensor system. Refer to TM-57, "DTC Logic".
4.CHECK ENGINE SPEED SIGNAL SYSTEM
Check engine speed signal system. Refer to TM-64, "DTC Logic".
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
P1722 vehicle speed
Description
The vehicle speed signal is transmitted from ABS actuator
and electric unit (control unit) to TCM via CAN communication
line.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCE ...
P1726 throttle control signal
Description
The electric throttle control actuator consists of
throttle control motor, accelerator pedal position sensor, throttle
position sensor, etc. The actuator sends a signal to the ECM, an ...
Other materials:
SRS air bag system
"AIR BAG" Warning Lamp Does Not Turn Off
DIAGNOSTIC PROCEDURE
1.CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
2.CHECK THE AIR BAG FUSE
Check 10A fuse [No. 2, located in the fuse block (J/B)].
3.CHECK AIR BAG FUSE AGAIN
Replace 10A fuse ...
CAN communication circuit
Diagnosis Procedure
1.CONNECTOR INSPECTION
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect all the unit connectors on CAN communication system.
Check terminals and connectors for damage, bend and loose
connection.
2.CHECK HARNESS CON ...
Rear power sunshade (if so equipped)
The rear sun shade operates when the ignition
switch is in the ACC or ON position.
The rear sun shade switch is located on the front
console.
To raise the sun shade, push the upper side
of the switch 1 .
To lower the sun shade, push the lower side
of the switch 2 .
The switch ne ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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