Nissan Sentra manuals

Nissan Sentra Service Manual: On Board Diagnostic (OBD) System of Engine and CVT

Nissan Sentra Service Manual / Engine / Engine control system / Precaution / 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:

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:

B142A Ignition voltage
Description DTC B142A IGNITION VOLTAGE Ignition voltage is supplied to the air bag diagnosis sensor unit when the ignition is in the ON position. The air bag diagnosis sensor unit will monitor for low or high ignition voltage. PART LOCATION Refer to SRC-5, "Component Parts Location" ...

Preparation
Special Service Tool The actual shape of the tools may differ from those illustrated here. Commercial Service Tool Clip list Descriptions for Clips Replace any clips which are damaged during removal or installation. ...

SRS Air bag warning lamp does not turn OFF
Diagnosis Procedure 1.CHECK AIR BAG MODULE AND SEAT BELT PRE-TENSIONER Check the deployment of air bag module. Is air bag module deployed? YES >> Replace the malfunctioning parts. NO >> GO TO 2. 2.CHECK AIR BAG FUSE Check 10 A fuse [No.3, located in fuse block (J/B)]. Is th ...

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