Relay Type

Four-terminal
Type A
1. Remove the relay.
2. Inspect for continuity between the relay terminals using an ohmmeter.


Type B
1. Remove the relay.
2. Inspect for continuity between the relay terminals using an ohmmeter.


Type C
1. Remove the relay.
2. Inspect for continuity between the relay terminals using an ohmmeter.


Relay locationMazda 6 Service Manual: Woofer inspection
1. Inspect for continuity between the audio amplifier connector terminals and
woofer connector terminals using an ohmmeter.
If not as specified, replace the related wiring harnesses.
2. Verify that there is battery positive voltage at the woofer connector
terminal A (4SD) or C (5HB) u ...
Mazda 6 Service Manual: Installation of radio system
If a radio system is installed improperly or if a high-powered type is used,
the CIS and other systems may be affected. When the vehicle is to be equipped
with a radio, observe the following precautions:
Install the antenna at the farthest point from control modules.
Install the antenna fe ...