Diagnosis Procedure

Diagnosis Procedure

1. CHECK ECV POWER SUPPLY

   1. 1. Ignition switch OFF.

      2. Disconnect A/C compressor connector.

      3. Ignition switch ON.

      4. Check voltage between A/C compressor harness connector and ground.

         +		−	Voltage (Approx.)
         A/C compressor
         Connector	Terminal
         F10	4	Ground	Battery voltage

   Is the inspection result normal?

   YES>>

   GO TO 3.

   NO>>

   GO TO 2.

2. CHECK FUSE

   1. 1. Ignition switch OFF.

      2. Check 10A fuse [No. 89, located in IPDM E/R].

   Is the inspection result normal?

   YES>>

   Repair harness or connector between A/C compressor and fuse.

   NO>>

   Replace the blown fuse after repairing the affected circuit.

3. CHECK ECV CONTROL SIGNAL CIRCUIT FOR OPEN

   1. 1. Ignition switch OFF.

      2. Disconnect A/C auto amp. connector.

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

         A/C compressor		IPDM E/R		Continuity
         Connector	Terminal	Connector	Terminal
         F10	3	F98	98	Yes

   Is the inspection result normal?

   YES>>

   GO TO 4.

   NO>>

   Repair harness or connector.

4. CHECK ECV CONTROL SIGNAL CIRCUIT FOR SHORT

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

      A/C compressor		−	Continuity
      Connector	Terminal
      F10	3	Ground	No

   Is the inspection result normal?

   YES>>

   GO TO 5.

   NO>>

   Repair harness or connector.

5. CHECK ECV

   1. Check ECV. Refer to Component Inspection.

   Is the inspection result normal?

   YES>>

   GO TO 6.

   NO>>

   Replace A/C compressor. Refer to Removal and Installation.

6. CHECK INTERMITTENT INCIDENT

   1. Refer to Intermittent Incident.

   Is the inspection result normal?

   YES>>

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

   NO>>

   Repair or replace malfunctioning parts.

Component Inspection

Component Inspection

1. CHECK ECV (ELECTRICAL CONTROL VALVE)

   1. 1. Ignition switch OFF.

      2. Disconnect A/C compressor connector.

      3. Check continuity between A/C compressor connector F10 terminals.

         A/C compressor		Condition	Resistance (Ω) (Approx.)
         Terminals		Temperature: °F (°C)
         3	4	68 (20)	10.1 – 11.1

   Is the inspection result normal?

   YES >>

   Inspection End.

   NO >>

   Replace A/C compressor. Refer to Removal and Installation.