Temperature Control Inoperative

Check Wires To Temperature Blend Door Actuator

Turn ignition off. Disconnect A/C control panel 16-pin connector. Disconnect temperature blend door actuator connector, located behind passenger-side instrument panel lower cover. Using ohmmeter, measure resistance of indicated wires between 16-pin connector and ground. See TEMPERATURE BLEND DOOR ACTUATOR CIRCUIT TESTS table. Measure resistance of indicated wires between 16-pin connector and temperature blend door actuator connector. See TEMPERATURE BLEND DOOR ACTUATOR CIRCUIT TESTS table. If results are not as specified, repair appropriate wire(s). If results are as specified, reconnect 16-pin connector, and go to next step.

TEMPERATURE BLEND DOOR ACTUATOR CIRCUIT TESTS

Test & Wire Color

Ohms

Short To Ground Check ⁽¹⁾

Blue/Black Wire

More Than 10,000

Orange Wire

More Than 10,000

Blue/Red Wire

More Than 10,000

Red/White Wire

More Than 10,000

Red/Black Wire

More Than 10,000

Continuity Check ⁽²⁾

Blue/Black Wire

Less Than 5

Orange Wire

Less Than 5

Blue/Red Wire

Less Than 5

Red/White Wire

Less Than 5

Red/Black Wire

Less Than 5

⁽¹⁾	Check between indicated wire and ground.

⁽²⁾	Check indicated wire between 16-pin connector and temperature blend door actuator connector.

Check Output From A/C Control Panel

Ensure ignition is off. Disconnect temperature blend door actuator connector. Turn ignition on. Press any mode button on A/C control panel. Move temperature control knob between full WARM and full COOL settings, and measure voltage at indicated terminal of temperature blend door actuator connector. See TEMPERATURE BLEND DOOR ACTUATOR VOLTAGE TEST table. If voltage is not as specified, replace A/C control panel. If voltage is as specified, go to next step.

TEMPERATURE BLEND DOOR ACTUATOR VOLTAGE TEST

Wire Color	Volts
Orange Wire	Varies Between .25 (Full COOL) 9.25 (Full WARM)
Blue/Red Wire	Approximately 0
Blue/Black Wire	Approximately 7.75

Check Temperature Blend Door Actuator Operation

Ensure ignition is off. Disconnect A/C control panel 16-pin connector.

CAUTION: DO NOT apply battery voltage to actuator for an extended period, as temperature blend door mechanism and/or actuator may be damaged.

Connect a jumper wire between positive battery terminal and Red/White wire terminal of 16-pin connector. Connect a second jumper wire between Red/Black wire terminal of 16-pin connector and ground. Ensure actuator rotates toward full cool position (counterclockwise). Reverse polarity, and ensure actuator rotates toward full warm position (clockwise). If actuator functions as indicated, replace A/C control panel. If actuator does not function as indicated, replace temperature blend door actuator.