2021 Nissan-Datsun Sentra SRFACTORY OEM SERVICE PROCEDURE

Component Description

No.

Component

Function

1.

A/C auto amp.

The A/C auto amp. receives the ECO mode signal from the BCM via CAN communication.

Refer to Component Location (Auto A/C), Component Location (Manual A/C) for detailed component location.

A/C amp.

2.

Electric throttle control actuator

Refer to Component Description for detailed component location.

3.

Trans axle assembly

Refer to Component Location for detailed component location.

4.

TCM (Transmission Control Module)

The TCM receives the ECO mode signal from the BCM via CAN communication.

Refer to Component Location for detailed component location.

5.

ECM (Engine Control Module)

The ECM receives the ECO mode signal from the BCM via CAN communication.

Refer to Component Location for detailed component location.

6.

BCM (Body Control Module)

  • The BCM transmits the ECO mode indicator signal to the combination meter via CAN communication.
  • The BCM transmits the ECO mode signal to the ECM, TCM and A/C auto amp. via CAN communication.

Refer to Component Location for detailed component location.

7.

Combination meter

The combination meter receives the ECO mode indicator signal via CAN communication from the BCM.

Refer to Component Location (Type A) or Component Location (Type B) for detailed component location.

8.

ECO mode switch

Refer to ECO Mode SwitchΒ .

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:

  • 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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