Disconnect the A/C Pressure Sensor and PCM/ECM connectors and inspect for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Reconnect the connectors.

Connect the GDS and go to “Current Data”.

Monitor A/C Pressure Sensor values in Current Data, check and wiggle the harness(es), connector(s), and terminal(s).

Any change in the values indicates a poor connection. Was a connector problem found?

	▶ Repair the connector. Go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection" procedure.

IG "OFF". Disconnect the A/C pressure sensor connector.

IG "ON"

Measure the voltage between power terminal of A/C pressure sensor harness connector and chassis ground.

Is voltage within specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "OFF". Disconnect A/C pressure S. harness connector and PCM/ECM harness connector.

Measure resistance between both ends of ground line.

Is resistance within specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.