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.
2006 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Engine Control System - Component Testing (Qr25DE): VIAS: Wiring Diagram
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.
WIRE COLOR AND TERMINAL NO. DESCRIPTION
| TERMINAL NO. | WIRE COLOR | ITEM | CONDITION | DATA (DC Voltage) |
|---|---|---|---|---|
| 29 | Y/R | VIAS control solenoid valve | [Engine is running]
|
BATTERY VOLTAGE (11 - 14V) |
[Engine is running]
|
0 - 1.0V | |||
| 111 | W/G | ECM relay (Self shut-off) |
[Engine is running] [Ignition switch: OFF]
|
0 - 1.0V |
[Ignition switch: OFF]
|
BATTERY VOLTAGE (11 - 14V) |
|||
| 119 120 |
R/G | Power supply for ECM | [Ignition switch: ON] | BATTERY VOLTAGE (11 - 14V) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.