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:
Fuel efficient driving tips
Follow these easy-to-use Fuel Efficient Driving
Tips to help you achieve the most fuel economy
from your vehicle.
Use Smooth Accelerator and Brake
Pedal Application
Avoid rapid starts and stops
Use smooth, gentle accelerator and
brake application whenever possible
Maintain consta ...
Recommended fluids and lubricants
Fluids and lubricants
*1: For additional information, see “engine oil recommendation”.
*2: As an alternative to this recommended oil, sae 5w-30 conventional
petroleum based oil may be used and meet all specifications
and requirements necessary to maintain the new vehicle limited ...
Parking brake system
Inspection and Adjustment
INSPECTION
Lever Stroke
Operate the parking brake lever with a force of 196 N (20.0
kg-f, 44.1 lb-f). Check that the lever stroke is
within the specified number of notches. (Check it by listening to the clicks
of the ratchet.)
Number of notches : Refer t ...
