2012 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Terminals And Reference Values For EPS Control Unit

Data are reference value and are measured.

Terminal Wire color Item Condition Data (Approx.)
1 W Power supply (Memory back-up) Ignition switch: ON Battery voltage
Ignition switch: OFF Battery voltage
2 B Ground Always 0 V
3 BR Power supply Ignition switch: ON Battery voltage
Ignition switch: OFF 0 V
5 L CAN-H - -
7 P CAN-L - -
11 B Torque sensor ground Always 0 V
12 Y Torque sensor sub Engine running Steering wheel: Not steering (There is no steering force) 2.5 V
Steering wheel: Steering 1.7 V - 3.3 V (The value is changed according to steering left or right)
13 R Torque sensor power supply Ignition switch: ON 8 V
Ignition switch: OFF 0 V
14 W Torque sensor main Engine running Steering wheel: Not steering (There in no steering force) 2.5 V
Steering wheel: Steering 1.7 V - 3.3 V (The value is changed according to steering left or right)
CAUTION: When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
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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.