Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE
Data Monitor
| Monitor item (Unit) | Remarks | ||
|---|---|---|---|
| VHCL SPEED SE [km/h] or [mph] | The vehicle speed signal from ABS actuator and electric unit (control unit) is indicated with CAN communication line. | ||
| STEERING ANG [°] | The steering angle sensor signal from the steering angle sensor is indicated with CAN communication line. | ||
| ENGINE SPEED [rpm] | The engine speed signal from ECM is indicated with CAN communication line. | ||
| STR ANGL SPD [deg/s] | The steering angle speed signal from the steering angle sensor is indicated with CAN communication line. | ||
| POWER STR SOL [A] | The current value of the power steering solenoid valve is indicated. | ||
| RR ST ANG-MAI [V] | The voltage of the rear wheel steering angle sensor (main) is indicated. | ||
| RR ST ANG-SUB [V] | The voltage of the rear wheel steering angle sensor (sub) is indicated. | ||
| RR ST ANG-VOL [V] | The power supply voltage of the rear wheel steering angle sensor is indicated. | ||
| C/U VOLTAGE [V] | The power supply voltage value of 4WAS main control unit is indicated. | ||
| MOTOR VOLTAGE [V] | The voltage value of 4WAS rear motor is indicated. | ||
| MOTOR CURRENT [A] | The current value of 4WAS rear motor is indicated. | ||
| MTR CRNT OPE [A] | The current value input to 4WAS rear motor is indicated. | ||
| RR ANGLE OPE [°] | The angle command value is indicated for activating 4WAS rear motor. | ||
| FR ANGLE OPE [°] | The front wheel angle value transmitted from 4WAS main control unit to 4WAS front control unit is indicated. | ||
| STOP LAMP SW [On/Off] | The stop lamp switch status is indicated. | ||
| HICAS RELAY [On/Off] | 4WAS rear motor relay condition is indicated. | ||
| FAIL SAFE [On/Off] | The fail-safe mode status of 4WAS main control unit is indicated. | ||
| WARNING LAMP [On/Off] | 4WAS warning lamp ON/OFF condition is indicated. | ||
| FRNT ECU FAIL [On/Off] | The fail-safe mode status of 4WAS main control unit transmitted from 4WAS front control unit via 4WAS communication line(1) is indicated. | ||
| FRNT ECU EX [On/Off] | The protection function mode status of 4WAS front control unit transmitted from 4WAS front control unit via 4WAS communication line(1) is indicated. | ||
| DRIVE MODE STATS [STD/SPORT] | The status of 4WAS mode. | ||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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