With A/C Only or Heater Only

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Connect the battery positive voltage to terminal B and ground to terminal A.
Verify that the bulb illuminates.
- If not as specified, replace the bulb.
Fig 1: Rear Climate Control Unit Terminal Test Condition Table - With A/C Only Or Heater Only
Courtesy of MAZDA MOTORS CORP.

Fig 2: Inspecting Rear Climate Control Unit Connector Terminals
Courtesy of MAZDA MOTORS CORP.