Checking the voltage at the contacts of the 10-pin socket (Mazda)
Mode | Contact | Voltage |
Air mixture control knob in any position | 1A | #6.0 |
Air mixture control knob in any position | 1B | no |
Air mixture control knob in the COLD position | 1C | B+ |
Temperature control lever in the HOT position | 1D | 5 |
Temperature control lever in the COLD position | 1D | #1 |
Air mixture control knob in the HOT position, Temperature control lever moved from COLD to HOT | 1F | B+ |
The ventilation switch is on: | ||
The mode switch moves from the DEF to VENT position | 1H | B+ |
The window heating switch is on: | ||
The mode switch moves from the VENT to DEF position | 1I | B+ |
Any mode | 1J | no |
The ignition is on | 1L | B+ |
Checking the voltage at the contacts of the 14-pin socket (Mazda)
Mode | Contact | Voltage |
| The window heating switch is on: | ||
The mode switch moves from the VENT to DEF position | 2A | no |
Light switch in Max position | 2B | no |
Light switch in the Min position | 2B | #10 |
| The ventilation switch is on: | ||
The mode switch moves from the DEF to VENT position | 2C | B+ |
The light switch is on | 2D | B+ |
The fan switch is off | 2E | B+ |
| The fan switch is on | 2F | no |
| The fresh air switch is on | 2H | B+ |
| The air recirculation switch is on | 2J | B+ |
| The window heating switch is on | 2K | no |
| The main heating and window heating switch is on | 2L | no |
| The heating switch is on | 2M | no |
| The ventilation switch is on | 2N | no |
| The bunk mode switch is on | 2O | no |
| The ignition is on | 2P | B+ |
| The oscillation switch is on | 2P | #1 |
Removal and installation
1. Disconnect the negative battery cable.
2. Remove the center console.
3. Remove the four screws from the control unit (indicated by arrows).
4. Remove the unit and disconnect the wires and control cable from it.
5. Installation is carried out in the reverse order of removal.
Cable adjustment (Ford)
To adjust the cable, set the temperature control lever to the highest temperature position. Release the end of the cable from the clamp, press the throttle lever down and tighten the cable clamp.
Electrical Circuit Test (Mazda)
There are three contact sockets on the back of the control unit, 10-pin, 14-pin and 6-pin. Using the diagrams (see the figure Checking the voltage at the contacts of the 10-pin socket (Mazda), see the figure Checking the voltage at the contacts of the 14-pin socket (Mazda)), check the operation of the control unit switches.