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 "Power Circuit Inspection" procedure. |
IG "OFF".
Disconnect APT connector.
IG "ON".
Measure voltage between power terminal of APT harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
![]() | ▶ Go to next procedure. |
![]() | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |