Ignition "OFF"
Disconnect ECV and Connect A/C control Module main harness connector.
Measure resistance between control(+) terminal of ECV harness connector and ground harness connector .(Component side)
Specification : Refer the specifications in fig.1)
Temperature(℃/℉) | Resistance(㏀) |
20/68 | Approx. 10.1 ~ 11.1 |
Fig.1) Resistance value of ECV as a function of temperature.
Is "resistance" display near the specified value?
![]() | ▶ Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Substitute with a known-good ECV and check for proper operation. If the problem is corrected, replace ECV and then go to "Verification of Vehicle Repair" procedure. (※ Rplace ECV after removing A/C refrigerant.) |