Nissan Murano: Dtc/circuit Diagnosis / Power Supply and Ground Circuit

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / Power Supply and Ground Circuit

Diagnosis Procedure

CHECK THE BATTERY CABLE

  1. Turn ignition switch OFF.

  2. Check the battery cable for tightening enough.

NOTE:

Check the continuity between the battery cable and the battery terminal.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace battery cable connection.

CHECK ECM INTERMITTENT INCIDENT

Check intermittent incident. Refer to Intermittent Incident.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace ECM connection.

CHECK FUSE

Check that there is no blowout in the following fuses.

Location Fuse No. Capacity
IPDM E/R #41 15 A
#56 10 A

Is the fuse blown (open)?

YES>>

Replace the fuse after repairing the applicable circuit.

NO>>

GO TO 4.

CHECK GROUND CONNECTION

  1. Turn ignition switch OFF.

  2. Check ground connection E9 and E15. Refer to Harness Layout.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace ground connection.

CHECK ECM GROUND CIRCUIT

  1. Disconnect ECM harness connectors.

  2. Check the continuity between ECM harness connector and ground.

    + − Continuity
    ECM
    Connector Terminal
    E32 147 Ground Existed
    149
    152
    F78 10
    55
    F79 105
    110

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace error-detected parts.

CHECK ECM POWER SUPPLY (MAIN)-I

  1. Reconnect ECM harness connector.

  2. Turn ignition switch ON.

  3. Check the voltage between ECM harness connector terminals.

    ECM Voltage
    Connector + −
    Terminal
    E32 145 152 Battery voltage

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

GO TO 7.

CHECK ECM POWER SUPPLY (MAIN) CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connectors.

  3. Disconnect IPDM E/R harness connector.

  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

    + − Continuity
    ECM IPDM E/R
    Connector Terminal Connector Terminal
    E32 145 F19 59 Existed

  5. Also check harness for short to ground.

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

CHECK ECM POWER SUPPLY (MAIN)-II

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

  2. Check the voltage between ECM harness connector terminals as per the following.

    ECM Condition

    Voltage

    (Approx.)
    Connector + −
    Terminal
    E32 145 152 After turning ignition switch OFF, battery voltage will exist for a few seconds Drop to 0 V

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

GO TO 9.

CHECK ECM RELAY CONTROL SIGNAL

Check the voltage between ECM harness connector terminals as per the following.

ECM Condition

Voltage

(Approx.)
+ −
Connector Terminal Connector Terminal
F79 86 E32 152 Ignition switch ON 0 V
Turn ignition switch OFF and wait at least 10 seconds. Battery voltage

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

GO TO 10.

CHECK ECM RELAY CONTROL SIGNAL CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Disconnect IPDM E/R harness connector.

  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

    + − Continuity
    ECM IPDM E/R
    Connector Terminal Connector Terminal
    F79 86 F24 72 Existed

  5. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

Replace IPDM E/R. Refer to Removal and Installation.

NO>>

Repair or replace error-detected parts.

CHECK IGNITION SWITCH SIGNAL

  1. Turn ignition switch ON.

  2. Check the voltage between ECM harness connector terminals.

    ECM Condition

    Voltage

    (Approx.)
    Connector + −
    Terminal
    E32 133 152 Ignition switch OFF 0 V
    Ignition switch ON Battery voltage

Is the inspection result normal?

YES>>

GO TO 13.

NO>>

GO TO 12.

CHECK IGNITION SWITCH SIGNAL CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Disconnect IPDM E/R harness connector.

  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

    + − Continuity
    ECM IPDM E/R
    Connector Terminal Connector Terminal
    E32 133 F119 21 Existed

  5. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

CHECK ECM POWER SUPPLY (BACK-UP)

Check the voltage between ECM harness connector terminals.

ECM Voltage
+ −
Connector Terminal Connector Terminal
F79 116 E32 152 Battery voltage

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

GO TO 14.

CHECK ECM POWER SUPPLY (BACK-UP) CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Disconnect IPDM E/R harness connector.

  4. Check the continuity between ECM harness connector and IPDM E/R harness connector.

    + − Continuity
    ECM IPDM E/R
    Connector Terminal Connector Terminal
    F79 116 F19 58 Existed

  5. Also check harness for short to ground.

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

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