1. Remove the VAD control solenoid valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
2. Inspect airflow between the ports under the following conditions.


Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)
2. Inspect the following wiring harness for open or short (continuity check).

Open circuit
- VAD control solenoid valve terminal B (harness-side) and PCM terminal 4C
- VAD control solenoid valve terminal A (harness-side) and main relay terminal C (harness-side)
Short circuit
- VAD control solenoid valve terminal B (harness-side) and body GND
- VAD control solenoid valve terminal A (harness-side) and power supply
Variable air duct (vad) shutter valve inspection (l3)
Variable air duct (vad) check valve (one-way) inspection (l3)Mazda 6 Service Manual: Add-On Non-Genuine Parts and Accessories
Non-genuine parts and accessories for Mazda vehicles can be found in stores.
These may fit your vehicle, but they are not approved by Mazda for use with Mazda
vehicles. When you install non-genuine parts or accessories, they could affect your
vehicle's performance or safety systems; the Mazda w ...
Mazda 6 Service Manual: Lights-On Reminder
The lights-on reminder is operable when the time setting*1 of the auto headlight
off function is off.
If lights are on and the ignition is switched to ACC or off, a continuous beep
sound will be heard when the driver's door is opened.
*1 If the light switch is left on, the auto headlight off f ...