Nissan Murano: Dtc/circuit Diagnosis / P0604 Ecm

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P0604 Ecm

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0604

ECM

[Internal control module random access memory (RAM) error] 		Diagnosis condition Ignition switch ON
Signal (terminal) —
Threshold Malfunction in the internal RAM of ECM
Diagnosis delay time —

POSSIBLE CAUSE

  • ECM

FAIL-SAFE

Engine operating condition in fail-safe mode
Fail safe mode Nissan Murano Vehicle behavior
ECM

  • ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

  • The position of the following components is fixed.

    • Intake valve timing control solenoid valve

    • Exhaust valve timing control solenoid valve

    • Intake manifold runner control valve

  • ASCD operation may be deactivated.
DTC Confirmation Procedure

PRECONDITIONING

  1. Turn ignition switch OFF and wait at least 10 seconds.

  2. Turn ignition switch ON.

  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition switch ON.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON (engine stopped) and wait least 20 minutes.

    CAUTION:

    Never start engine during this procedure.

  2. Turn ignition switch OFF and wait at least 10 seconds.

  3. Turn ignition switch ON.

  4. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure. Refer to DTC Description.

Is the 1st trip DTC P0604 displayed again?

YES>>

Replace ECM. Refer to Removal and Installation.

NO>>

INSPECTION END

    P0603 Ecm

    DTC Description DTC DETECTION LOGIC ECM back up system does not function properly. EEPROM (built-in microcomputer) system internal ECM does not function properly...

    P0607 Ecm

    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P0607 ECM (Control module performance) Diagnosis condition Ignition switch ON Signal (terminal) — Threshold ECM internal communication system is malfunctioning Diagnosis delay time — POSSIBLE CAUSE ECM FAIL-SAFE Engine operating condition in fail-safe mode Fail safe mode Nissan Murano Vehicle behavior ECM Engine torque may be limited...

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