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 G25 BaseFACTORY OEM SERVICE PROCEDURE
Data Monitor
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
DATA MONITOR REFERENCE
| Item (Unit) | Note: |
|---|---|
| MASTER CYL PRESSURE (V) | Master cylinder pressure sensor 1 voltage is displayed. |
| MASTER CYL PRES (VDC) (MPa) | Displays the master cylinder fluid pressure sensor 2 signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| MOTOR TEMPERATURE (°C) | Displays the temperature of the motor inside the electrically-driven intelligent brake unit. |
| CONTROL MODULE TEMP (°C) | Displays the temperature of the control module that is integrated with the electrically-driven intelligent brake unit. |
| MST CYL PRES POWER VOLT (V) | Master cylinder pressure sensor 1 power supply is displayed |
| STROKE SEN 1 POWER VOLT (V) | Stroke sensor power supply is displayed |
| MOTOR POWER SUPPLY (V) | Displays the power voltage of the motor inside the electrically-driven intelligent brake unit. |
| CONTROL MODULE POWER (V) | Displays the power voltage of the control module that is integrated with the electrically-driven intelligent brake unit. |
| STROKE SEN 1 LEARN VALUE (deg) | Displays the stroke sensor 1* learning value. |
| STROKE SEN 2 LEARN VALUE (deg) | Displays the stroke sensor 2* learning value. |
| ALL SENSOR LEARNING (INCOMP/COMP) | Displays the learning values of stroke sensor 1*, stroke sensor 2*, and master cylinder pressure. |
| STROKE SEN 1 OUTPUT VOLT (V) | Displays the stroke sensor 1* output voltage. |
| STEERING ANGLE SENSOR (deg) | Displays the steering angle sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| DECEL G SENSOR (G) | Displays the decel G sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| SIDE G SENSOR (G) | Displays the side G sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| YAW RATE SENSOR SIGNAL (G) | Displays the yaw rate sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| WHEEL SENSOR FRONT RH (RPM) | Displays the front RH wheel sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| WHEEL SENSOR FRONT LH (RPM) | Displays the front LH wheel sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| WHEEL SENSOR REAR RH (RPM) | Displays the rear RH wheel sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| WHEEL SENSOR REAR LH (RPM) | Displays the rear LH wheel sensor signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| VEHICLE SPEED (km/h) | Displays the vehicle speed signal sent via CAN communication from the ABS actuator and electric unit (control unit). |
| ACTUAL GEAR POSITION [R/D/(N/R)] | Displays the shift position signal sent via CAN communication from the VCM. |
| BRAKE SWITCH (On/Off) | Stop lamp switch signal input status is displayed. |
| COMMAND WAKE UP SLEEP (sleep/wake-up) | Displays the wake up signal sent via CAN communication from the combination meter. |
| DOOR SWITCH (BACK DOOR) (CLOSE/OPEN) | Displays the operating status of the door switch (back door), sent via CAN communication from the BCM. |
| DOOR SWITCH (REAR RH) (CLOSE/OPEN) | Displays the operating status of the door switch (rear RH), sent via CAN communication from the BCM. |
| DOOR SWITCH (REAR LH) (CLOSE/OPEN) | Displays the operating status of the door switch (rear LH), sent via CAN communication from the BCM. |
| DOOR SWITCH (FRONT RH) (CLOSE/OPEN) | Displays the operating status of the door switch (front RH), sent via CAN communication from the BCM. |
| DOOR SWITCH (FRONT LH) (CLOSE/OPEN) | Displays the operating status of the door switch (front LH), sent via CAN communication from the BCM. |
| IGNITION SIGNAL (On/Off) | Displays the operating status of the power switch, sent via CAN communication from the BCM. |
| READY STATUS (On/Off) | Displays the ready status, sent via CAN communication from the VCM. |
| BACKUP UNIT DIAG RESULT(NORMAL/ERR1/ERR2/ERR3/ERR4/ERR5/ERR6/ERR7/ERR8/ERR9/ERR10/ERR11/ERR12/ERR13/ERR14/ERR15) | Displays the diagnosis results for the brake power supply backup unit. |
| BACKUP UNIT MODE | Displays the operating status of the brake power supply backup unit. |
| BACKUP UNIT CHARGE STATUS (CHRG1/CHARG2/FULL) | Displays the charge status of the brake power supply backup unit. |
The stroke sensor is composed of two circuits: stroke sensor 1 and stroke sensor 2.
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.