Signal Circuit Inspection

Check short to ground inspection
1. Key "OFF".
2. Disconnect A/C pressure sensor and PCM connector.
3. Measure the resistance between terminal 2 of A/C pressure sensor harness connector and chassis ground.
  Specification : Infinite
4. Is the measured resistance within specification ?
  YES
  - Go to " 2Check open in harness" procedure.
  NO
  - Repair Short to ground in A/C pressure sensor signal circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. Key "OFF".
2. Disconnect A/C pressure sensor and PCM connector.
3. Measure the resistance between terminal 2 of A/C pressure sensor harness connector and terminal 32 of PCM harness connector.
  Specification : Approx. below 1Ω
4. Is the measured resistance within specification ?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair Open in A/C pressure signal circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.