STEP
INSPECTION
ACTION
1
• Inspect ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR INSPECTION.)
• Is it okay?
Yes
Go to the next step.
No
Replace ambient temperature sensor. (See AMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION.)
2
• Disconnect front climate control unit connector (16-pin) and ambient temperature sensor connector.
• Is there open circuit between following terminals of front climate control unit connector (16-pin) and ambient temperature sensor connector?
-
― 2I—B― 2P—A
Yes
Repair wiring harness.
No
Go to the next step.
3
• Is there short circuit to ground between terminal 2I of front climate control unit connector (16-pin) and terminal B of ambient temperature sensor connector?
Yes
Repair wiring harness.
No
Connect front climate control unit connector, then go to the next step.
4
• Turn ignition switch to ON position.
• Measure voltage at terminal 2I of front climate control unit connector (16-pin).
• Is voltage approx. 5 V?
Yes
This system is normal at present. (Erase the past failure from memory.)
No
Inspect the connection of the front climate control unit connector.
