Nissan Sentra manuals

Nissan Sentra Service Manual: P0603 ECM

DTC Logic

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms (Trouble diagnosis content)

DTC detecting condition

Possible cause

P0603 ECM BACK UP CIRCUIT [Internal control module keep alive memory (KAM) error]
  • Malfunction in the internal back up RAM of ECM.
  • Malfunction in the internal EEP-ROM system of ECM.
  • ECM power supply
  • ECM

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

TESTING CONDITION:

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 1 second.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Repeat step 1 and 2 for 10 times.
  4. Turn ignition switch ON.
  5. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-346, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Perform trouble diagnosis for ECM power supply and ground circuit. Refer to EC-164, "Diagnosis Procedure".

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace error-detected parts.

2.CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to GI-39, "Intermittent Incident".

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace error-detected parts.

3.PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.
  2. Erase DTC.
  3. Perform DTC confirmation procedure. Refer to EC-346, "DTC Logic".

Is the 1st trip DTC P0603 displayed again? YES >> Replace ECM. Refer to EC-485, "Removal and Installation".

NO >> INSPECTION END

P0524 Engine oil pressure
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0524 ENGINE OIL PRESSURE (Engine oil ...

P0604 ECM
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0604 ECM [Internal control module ...

Other materials:

Fuses
Two types of fuses are used. Type A is used in the fuse boxes in the engine compartment. Type B is used in the passenger compartment fuse box. Type A fuses are provided as spare fuses. They are stored in the passenger compartment fuse box. Type A fuses can be installed in the engine com ...

C1606 EPS Motor
DTC Logic DTC DETECTION LOGIC Dtc Display item Malfunction detected condition Possible cause C1606 EPS MOTOR When the motor driver malfunction of EPS control unit or EPS motor malfunction is detected. Harness or connector EPS motor Eps control ...

USB interface (models without Navigation System) (if so equipped)
Connecting a device to the USB input jack WARNINGDo not connect, disconnect, or operate the USB device while driving. Doing so can be a distraction. If distracted you could lose control of your vehicle and cause an accident or serious injury. CAUTION Do not force t ...

В© 2014-2020 Copyright www.nisentra.com