Nissan Sentra Service Manual: Control Units and Electrical Parts

Nissan Sentra Service Manual / General information / Basic inspection / Service information for electrical incident / Control Units and Electrical Parts

PRECAUTIONS

Never reverse polarity of battery terminals.
Install only parts specified for a vehicle.
Before replacing the control unit, check the input and output and functions of the component parts.
Do not apply excessive force when disconnecting a connector.

Do not apply excessive shock to the control unit by dropping or hitting it.
Be careful to prevent condensation in the control unit due to rapid temperature changes and do not let water or rain get on it. If water is found in the control unit, dry it fully and then install it in the vehicle.
Be careful not to let oil to get on the control unit connector.
Avoid cleaning the control unit with volatile oil.
Do not disassemble the control unit, and do not remove the upper and lower covers.

When using a DMM, be careful not to let test probes get close to each other to prevent the power transistor in the control unit from damaging battery voltage because of short circuiting.
When checking input and output signals of the control unit, use the specified check adapter.

Work Flow

STEP DESCRIPTION STEP 1 Get detailed information about the conditions and the environment when the incident occurred. The following are key pieces of information requi ...

How to Check Terminal

CONNECTOR AND TERMINAL PIN KIT Use the connector and terminal pin kits listed below when replacing connectors or terminals. The connector and terminal pin kits contain some of the most common ...

Other materials:

Front wiper motor lo circuit
Component function check 1. Check front wiper lo operation Ipdm e/r auto active test Start ipdm e/r auto active test. Refer to pcs-9, "diagnosis description" (with intelligent key system) or pcs-37, "diagnosis description" (without intelligent key system). Check tha ...

System description
Component parts Component parts location Ipdm e/r (contains ignition relay-1) Bcm (view with instrument panel removed) Fuse block (j/b) (front) Fuse block (j/b) (back) Blower relay Ignition relay-2 Accessory relay-1 Push-button ignition switch Component description ...

Combination switch
Exploded view Combination switch Combination switch harness connector Front NOTE: Shown with the steering wheel removed for clarity only. Removal and installation REMOVAL CAUTION: Before servicing, turn the ignition switch OFF, disconnect both battery terminals and wait at l ...