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

Dtc Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (magnetic clutch ON signal circuit is shorted to battery or open)

• IPDM E/R

FAIL-SAFE

Inhibit A/C compressor (magnetic clutch) operation

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

1. CHECK MAGNETIC CLUTCH ON SIGNAL CIRCUIT FOR OPEN

   1. 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 connectors 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 connectors 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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