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Home >> Mazda >> 1997 >> MX-6 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Heater System) >> Testing >> Heater Control Panel
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Heater Control Panel

WARNING: This page is about a different car, the 1996 Mazda MX-6, 1996 Mazda 626, 1995 Mazda MX-6, and 1995 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

Remove heater control panel. See HEATER CONTROL PANEL under REMOVAL & INSTALLATION. Measure voltage at indicated terminals on back of heater control panel. See HEATER CONTROL PANEL TEST table. If voltage is not as specified, check related components and wiring harness. If components and wiring harness are okay, replace heater control panel.

HEATER CONTROL PANEL TEST

Test Condition (6-Pin Connector)  Wire Color (Circuit/Component)  Volts 
Blower Switch In Medium-High Setting Yellow/Black Or Green/Red (Blower Motor Resistor) 0
Blower Switch In Medium-High Or High Setting Blue/White (Blower Motor Resistor) 0
Blower Switch In Medium-Low Setting Blue (Blower Motor Resistor) 0
Blower Switch In High Setting Blue/Black (ECU) 0
Blower Switch In Low Setting Blue/Yellow (A/C Amplifier, Blower Motor Resistor) 0
Any Position Black (Ground) 0
Test Condition (10-Pin Connector)  Wire Color (Circuit/Component)  Volts 
Any Position Green/White (Air-Mix Actuator) About 6
Any Position Brown (Air-Mix Actuator) 0
Temperature Lever Moved From Hot To Cold Pink (Air-Mix Actuator) Battery
Temperature Lever In Hot Setting Green (Air-Mix Actuator) 5
Temperature Lever In Cold Setting Green (Air-Mix Actuator) About 1
Temperature Lever Moved From Cold To Hot Green/Yellow (Air-Mix Actuator) Battery
Vent Button Pressed Yellow/Black (Airflow Mode Actuator) Battery
Defrost Button Pressed Yellow/Green (Airflow Mode Actuator) Battery
Any Position Black (Ground) 0
Ignition On Blue (Ignition Switch) Battery
Test Condition (14-Pin Connector)  Wire Color (Circuit/Component)  Volts 
Defrost Button Pressed White (Airflow Mode Actuator) 0
Vent Button Pressed White/Black (Airflow Mode Actuator) About 10
Light Switch On Orange (TNS Relay) Battery
Blower Switch Off Red (A/C Amplifier) Battery
A/C Switch & Blower Switch On Blue/White (A/C Amplifier) 0
Fresh Air Button Pressed Green/Blue (Fresh/Recirculated Air Actuator) Battery
Recirculated Air Button Pressed Blue (Fresh/Recirculated Air Actuator) Battery
Defrost Button Pressed Yellow/White (Airflow Mode Actuator) 0
Heat/Defrost Button Pressed Yellow (Airflow Mode Actuator) 0
Heat Button Pressed White/Blue (Airflow Mode Actuator) 0
Vent Button Pressed White/Yellow (Airflow Mode Actuator) 0
Bi-Level Button Pressed White/Green (Airflow Mode Actuator) 0
Ignition On Black/Red (Swing Louver) Battery
Swing Louver On Black/Red (Swing Louver) About 1