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:

The illumination control switch is inoperative
Description If any of the following malfunctions is found for the illumination control switch operation. All switches are inopera The specified switch cannot be operated Diagnosis procedure 1.Check illumination control switch signal circuit Check the illumination control switch signal ...

Basic inspection
Diagnosis and repair workflow Work Flow (With GR8-1200 NI) STARTING SYSTEM DIAGNOSIS WITH GR8-1200 NI To test the starting system, use the following special service tool: GR8-1200 NI Multitasking battery and electrical diagnostic station NOTE: Refer to the diagnostic station Instruction M ...

P0137 HO2S2
DTC Logic DTC DETECTION LOGIC The heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1. The oxygen storage capacity of the three way catalyst (manifold) causes the longer switching time. To judge the malfunctions of heated oxygen ...

В© 2014-2022 Copyright www.nisentra.com