2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Transfer Control Unit Terminals And Reference Value

WARNING: This page is about a different car, the 2005 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

Data are reference value and are measured between each terminal and ground.

TERMINAL WIRE COLOR ITEM SPECIFICATION - TRANSFER CONTROL DEVICE

Terminal Wire color Item Condition Data (Approx.)
25 W/G Ignition switch monitor Ignition switch: ON Battery voltage
Ignition switch: OFF 0V
27 L Actuator motor power supply Ignition switch: ON Battery voltage
Ignition switch: OFF (5 seconds after ignition switch is turned OFF.) 0V
32 B Actuator motor ground Always 0V
40 V Transfer shut off relay Ignition switch: ON 0V
Ignition switch: OFF (5 seconds after ignition switch is turned OFF.) Battery voltage
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.