Nissan Maxima Service and Repair Manual: Vehicle speed signal circuit
Description
Combination meter sends vehicle speed signal to power steering control unit.
Diagnosis Procedure
1.PERFORM COMBINATION METER SELF-DIAGNOSIS
Perform combination meter self-diagnosis.
2.CHECK HARNESS BETWEEN COMBINATION METER AND POWER STEERING CONTROL UNIT FOR OPEN
- Turn the ignition switch OFF.
- Disconnect combination meter connector.
- Disconnect power steering control unit connector.
- Check continuity between combination meter connector M24 (A)
terminal 30 and power steering control unit connector M59 (B)
terminal 8.
3.CHECK HARNESS BETWEEN COMBINATION METER AND POWER STEERING CONTROL UNIT FOR SHORT
- Check continuity between combination meter connector M24
terminal 30 and ground. - Turn ignition switch ON.
- Check voltage between combination meter connector M24 terminal
30 and ground.
4.CHECK VEHICLE SPEED SIGNAL (COMBINATION METER SIDE)
- Turn the ignition switch OFF.
- Connect combination meter connector.
- Check combination meter input/output standard values.
5.CHECK VEHICLE SPEED SIGNAL (POWER STEERING CONTROL UNIT SIDE)
- Turn the ignition switch OFF.
- Connect power steering control unit connector.
- Start the engine.
- Check signal between power steering control unit connector
M59 terminal 8 and ground with oscillosco
6.CHECK TERMINALS AND HARNESS CONNECTORS
- Check power steering control unit pin terminals for damage or loose connection with harness connector.
- Check combination meter pin terminals for damage or loose connection with harness connector.
Engine speed signal circuit
Description
ECM sends engine speed signal to power steering control unit.
Diagnosis Procedure
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT
Perform ECM self-diagnosis.
2.CHECK HARNESS BETWEEN ECM AN ...
ECU diagnosis information
POWER STEERING CONTROL UNIT
Reference Value
TERMINA LAYOUT
PHYSICAL VALUES
CAUTION: When using circuit tester or oscilloscope to
measure voltage for inspection, be sure not to extend forcibl ...
Other materials:
ECU diagnosis information
A/C AUTO AMP.
Reference Value
VALUES ON THE DIAGNOSIS TOOL
CONSULT MONITOR ITEM
A/C AUTO AMP. HARNESS CONNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUES FOR A/C AUTO AMP.
DTC Inspection Priority Chart
If some DTCs are displayed at the same time, perform inspections one b ...
Subwoofer
Description
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE
speaker amp. amplifies the
audio signals before sending them to the subwoofers using the audio signal
circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and subwo ...
P1551, P1552 battery current sensor
Description
The power generation voltage variable control enables fuel consumption to be
decreased by reducing the
engine load which is caused by the power generation of the generator. The
battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures ...
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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