Airflow Mode Selector
- Remove heater control panel. See HEATER CONTROL PANEL
under REMOVAL & INSTALLATION. Connect positive battery cable to terminal "h" of connector on back of control panel, and ground terminal "g". See Fig 1
.
- Connect 1000-ohm resistor between terminals "n" and "g" of connector on back of control panel. Connect jumper wire between terminals "l" and "g". Measure voltage between terminals "n" and "g". If battery voltage exists, remove jumper wire and 1000-ohm resistor. Go to next step. If battery voltage does not exist, replace heater control panel.
- Connect 1000-ohm resistor between terminals "m" and "g". Connect jumper wire between terminals "j" and "g". Measure voltage between terminals "m" and "g". If battery voltage exists, remove jumper wire and 1000-ohm resistor. Go to next step. If battery voltage does not exist, replace heater control panel.
- Connect 1000-ohm resistor between terminals "h" and "n". Measure voltage between terminals "n" and "g". If voltage is less than one volt, remove 1000-ohm resistor, and go to next step. If voltage is one volt or more, replace heater control panel.
- Connect 1000-ohm resistor between terminals "h" and "m". Measure voltage between terminals "m" and "g". If voltage is less than one volt, remove 1000-ohm resistor, and go to next step. If voltage is one volt or more, replace heater control panel.
- Push indicated switch, and check continuity between appropriate terminals. See AIRFLOW MODE SELECTOR SWITCH TEST
table. If continuity is not as specified, replace heater control panel.
Courtesy of MAZDA MOTORS CORP. AIRFLOW MODE SELECTOR SWITCH TEST
| Switch Position |
Continuity Between Terminal |
| Vent |
"b" & "g" |
| Bi-Level |
"a" & "g" |
| Heat |
"d" & "g" |
| Heat/Defrost |
"c" & "g" |
| Defrost |
"e" & "g" |