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:
Before starting the engine
Make sure the area around the vehicle is
clear.
Check fluid levels such as engine oil, coolant,
brake fluid, and window washer fluid as
frequently as possible, or at least whenever
you refuel.
Check that all windows and lights are clean.
Visually inspect tires for their appearance
...
Troubleshooting guide
Verify the location of all Intelligent Keys that are
programmed for the vehicle. If another Intelligent
Key is in range or inside the vehicle, the vehicle
system may respond differently than expected.
Symptom
Possible Cause
Remedy
When pushing the ignition switch to sto ...
Vacuum lines
Inspection
VISUAL INSPECTION
Check for improper assembly, damage and deterioration. Replace as necessary.
CHECK VALVE INSPECTION
Airtightness Inspection
Use a suitable tool to check the built-in check valve. Replace the
vacuum hose with the built-in check valve as an assembly if the vacuu ...
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
0.0074