Inspection

1.	Ignition "OFF"

2.	Disconnect ambient temperature sensor.

3.

Check the resistance of ambient temperature sensor between terminal "+" and "-" whether it is changed by changing of the ambient temperature. Specification Ambient temperature [°C(°F)] Resistance [kΩ] -30(-22) 507± 3% -20(-4) 284.5 ± 3% -10(14) 164.2 ± 3% 0 (32) 97.5 ± 3% 10 (50) 59.6 ± 3% 20 (68) 37.46 ± 3% 30(86) 24.18 ± 3% 40(104) 16 ± 3% 50(122) 10.83 ± 3%

4.	If the measured resistance is not specification, substitute with a known-good ambient temperature sensor and check for proper operation.

5.	If the problem is corrected, replace the ambient temperature sensor.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the engine room under cover (A).

3.	Disconnect the connector and then remove the ambient temperature sensor (A).

4.	Installation is the reverse order of removal.