Nissan Sentra manuals

Nissan Sentra Service Manual: Diagnosis description : permanent diagnostic trouble code (permanent DTC)

Nissan Sentra Service Manual / Engine / Engine control system / Operation / Diagnosis description : permanent diagnostic trouble code (permanent DTC)

Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.

ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as a permanent DTC until ECM judges that there is no presence of malfunction.

Permanent DTCs cannot be erased by using the erase function of CONSULT or Generic Scan Tool (GST) and by disconnecting the battery to shut off power to ECM. This prevents a vehicle from passing the in-use inspection without repairing a malfunctioning part.

When not passing the in-use inspection due to more than one permanent DTC, permanent DTCs should be erased, referring to this manual.

NOTE:

PERMANENT DTC SET TIMING

The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.

Diagnosis description : system readiness test (SRT) code
System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5. As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the s ...

Diagnosis description : malfunction indicator lamp (MIL)
When emission-related ECU detects a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions), it turns on/blinks MIL to infor ...

Other materials:

Engine oil
With the engine at operating temperature and turned off, check the oil level on the dipstick. ■ Checking the engine oil 1. Park the vehicle on level ground. After warming up the engine and turning it off, wait more than 5 minutes for the oil to drain back into the bottom of the engine. 2. Ho ...

Slip indicator lamp
Component Function Check 1.CHECK SLIP INDICATOR LAMP FUNCTION Check that slip indicator lamp in combination meter turns ON for approximately 2 seconds after ignition switch is turned ON. Is the inspection result normal? YES >> Inspection End. NO >> Proceed to diagnosis proce ...

Automatic transmission
Shifting the shift lever Vehicles without a smart key system: While the engine switch is in the "ON" position and the brake pedal depressed*, shift the shift lever while pushing the shift release button on the shift knob. Vehicles with a smart key system: While the engine switch is in I ...

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