Signal Circuit Inspection

Voltage inspection
1. Key "OFF".
2. Disconnect the A/C pressure sensor connector.
3. Key "ON".
4. Measure the voltage between terminal 2 of A/C pressure sensor harness connector and chassis ground.
  1. Specification : Approx. 0V
    
    Fig 1: Measuring Voltage Between Terminal 2 Of A/C Pressure Sensor Harness Connector And Chassis Ground
    Courtesy of KIA MOTORS AMERICA, INC.
5. Is the measured voltage within specification?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Go to " 2 Short in circuit inspection" procedure.
Short in circuit inspection
1. Key "OFF".
2. Disconnect A/C pressure sensor connector and PCM connector.
3. Measure the resistance between terminal 2 and terminal 3 of A/C pressure sensor harness connector.
  1. Specification : Infinite
    
    Fig 2: Measuring Resistance Between Terminal 2 And Terminal 3 Of A/C Pressure Sensor Harness Connector
    Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured resistance within specification?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Repair Short in signal circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.