Nissan Maxima Service and Repair Manual: P0725 engine speed
Description
The engine speed signal is transmitted from ECM to TCM via CAN communication line.
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 10 consecutive seconds.
Diagnosis Procedure
1.CHECK DTC WITH ECM
With CONSULT
- Turn ignition switch ON.
- Perform "Self Diagnostic Results" in "ENGINE".
2.CHECK DTC WITH TCM
With CONSULT
Perform "Self Diagnostic Results" in "TRANSMISSION".
3.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
P0720 output speed sensor
Description
The secondary speed sensor detects the revolution of the CVT output shaft and
emits a pulse signal. The
pulse signal is transmitted to the TCM, which converts it into vehicle speed.
...
P0730 incorrect gear ratio
Description
TCM selects the gear ratio using the engine load (throttle position), the
primary pulley revolution speed, and
the secondary pulley revolution speed as input signals. Then it changes ...
Other materials:
ABS branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the ABS actuator and
electric unit (control unit) for damage, bend
and loose connection (unit side and connector side).
...
U1000 CAN comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent error
detection ability. Many electronic
control units are equipped onto a vehicle, and each co ...
System maintenance
The sensor A is located behind the lower grille
of the front bumper.
To keep the system operating properly, be sure to
observe the following:
Always keep the sensor area of the front
bumper clean.
Do not strike or damage the areas around
the sensor.
Do not cover or attach sticke ...
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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