Air Mix Damper Linkage 1. REMOVE COMPONENTS FROM VEHICLE (a) Undercover (b) Center cluster 2. CHECK AIR MIX DAMPER (a) Disconnect the rod from the clamp. (b) Disconnect the No. 4 vacuum hose between the D.V.V and vacuum motor in the power servo unit to release the vacuum pressure in the vacuum motor. The stem of the power servo extends fully to the maximum cooling position. (c) Position the damper to maximum cooling and connect the rod to the clamp. (d) Using a commercial vacuum pump, apply 250 mmHg (9.84 in.Hg, 33.3 kPa) of vacuum to the vacuum motor and verify that the damper moves to the maximum heating position. 3. REINSTALL REMOVED PARTS IN REVERSE ORDER Sensor Circuit 1. IN-CAR SENSOR (Located in console box) Check sensor resistance. 5.6 - 6.6 kΩ (0 - 25°C or 32 - 77°F) 2. VERIFY AIR IS SUCKED IN NEAR SENSOR NOTE: If there is an open circuit in the sensor, the system will operate at maximum heating. Conversely, if there is a short in the system, it will operate at maximum cooling. 3. AMBIENT SENSOR (Located on condenser) Check sensor resistance. 0.4 - 0.6 kΩ (0 - 25°C or 32 - 77°F)