Nissan Sentra Service Manual: On Board Diagnostic (OBD) System of Engine and CVT
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration.
CAUTION:
- Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the MIL to light up.
- Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease, dirt, bent terminals, etc.)
- Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to PG-42, "Description".
- Be sure to route and secure the harnesses properly after work. The interference of the harness with a bracket, etc. may cause the MIL to light up due to the short circuit.
- Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system, etc.
- Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer.
Precaution for Procedure without Cowl Top Cove.r.
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.
...
General Precautions
Always use a 12 volt battery as power source.
Do not attempt to disconnect battery cables while engine is
running.
Before connecting or disconnecting the ECM harness connector,
turn ignitio ...
Other materials:
Starting the engine
Apply the parking brake.
CVT model:
Move the shift lever to P (Park) or N (Neutral).
P (Park) is recommended.
The shift lever cannot be moved out of
P (Park) and into any of the other gear
positions if the ignition switch is
turned to the OFF position or if the key
is removed from th ...
Power window motor
DRIVER SIDE
DRIVER SIDE : Description
Door glass moves up/down by receiving the signal from main power window and
door lock/unlock switch
DRIVER SIDE : Component Function Check
1. Check front power window motor lh circuit
Check front power window motor lh operation with the main power window ...
Locking with power door lock switch
Door lock switch
To lock all the doors without a key, push the door
lock switch (driver’s or front passenger’s side) to
the lock position 1 . When locking the door this
way, be certain not to leave the key inside the
vehicle.
To unlock all the doors without a key, push the
door lock ...
