2008 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Section 196 (Engine Control System - Component Testing): VIAS: Wiring Diagram

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Refer to POWER SUPPLY, GROUND & CIRCUIT ELEMENTS PATHFINDER-->.

Fig 1: Identifying Wiring Diagram - EC-VIAS-01
G04897442Courtesy of NISSAN NORTH AMERICA, INC.

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
SPECIFICATION DATA AND REFERENCE VALUES CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
29 G VIAS control solenoid valve [Engine is running]Β 
  • Idle speed
BATTERY VOLTAGE (11 - 14V)
[Engine is running]Β 
  • Engine speed: Between 2, 200 and 3, 300 rpm.
0 - 1.0V
111 BR ECM relay (Self shut-off) [Engine is running]Β 
[Ignition switch: OFF]Β 
  • For a few seconds after turning ignition switch OFF
0 - 1.5V
[Ignition switch: OFF]Β 
  • More than a few seconds passed after turning ignition switch OFF
BATTERY VOLTAGE (11 - 14V)
119
120
R
P
Power supply for ECM [Ignition switch: ON]Β  BATTERY VOLTAGE (11 - 14V)
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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