Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: B20c7-15 A/c Clutch

Nissan Sentra B18 (2020-2025) Service Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System :: Automatic Air Conditioner / Dtc/circuit Diagnosis / B20c7-15 A/c Clutch

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B20C7–15

A/C clutch

(A/C clutch)

[CIRC SHORT TO BATT OR OPEN]

Diagnosis condition

When A/C switch is ON

Signal (Terminal)

Magnetic clutch ON signal

Threshold

Magnetic clutch ON signal circuit has a shorted to power or open

Diagnosis delay time

1 second or more

POSSIBLE CAUSE

FAIL-SAFE

Inhibit A/C compressor (magnetic clutch) operation

Confirmation Procedure

Confirmation Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Start the engine.

      2. Turn A/C switch ON.

      3. Select “Self Diagnostic Result” mode of “IPDM E/R”.

    Is DTC detected?

    YES >>

    Refer to DTC Diagnosis Procedure.

    NO >>

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

    NO >>

    Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK MAGNETIC CLUTCH ON SIGNAL CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect IPDM E/R connector and A/C compressor connector.

      3. Check continuity between IPDM E/R harness connector and A/C compressor harness connector.

        IPDM E/R

        A/C compressor

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        F96

        65

        F4

        1

        Yes

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair harness or connector.

  2. CHECK MAGNETIC CLUTCH ON SIGNAL CIRCUIT FOR SHORT

    1. Check voltage between IPDM E/R harness connector and the ground.

      +

      –

      Voltage

      (Approx.)

      IPDM E/R

      Connector

      Terminal

      F96

      65

      Ground

      0 V

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair harness or connector.

  3. CHECK MAGNETIC CLUTCH GROUND CIRCUIT FOR OPEN

    1. Check continuity between A/C compressor harness connector and the ground.

      A/C compressor

      —

      Continuity

      Connector

      Terminal

      F4

      2

      Ground

      Yes

    Is the inspection result normal?

    YES>>

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

    NO>>

    Repair harness or connector.

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