1. Inspect for continuity between the audio amplifier connector terminals and woofer connector terminals using an ohmmeter.


2. Verify that there is battery positive voltage at the woofer connector terminal A (4SD) or C (5HB) using a voltmeter.
3. Inspect continuity between the woofer connector terminal B and body ground using an ohmmeter.
Woofer removal/installation
Noise filter removal/installationMazda 6 Service Manual: Tire house trim removal/installation
4SD
1. Remove the rear scuff plate.
2. Remove the rear seat side.
3. Remove the fastener.
4. Pull the tire house trim upward, then disengage clips A from the body, and
remove the tire house trim.
5. Install in the reverse order of removal.
5HB
1. Remove the rear scuff plate.
2. Pull the ...
Mazda 6 Service Manual: Heated oxygen sensor (ho2s) inspection
HO2S Voltage Inspection
Note
Perform the following inspection only when directed.
1. Warm up the engine and run it at idle.
2. Disconnect the HO2S connector.
3. Connect the voltmeter test leads to the following HO2S terminals:
HO2S (front and rear)
- (+) leadterminal A
- (-) le ...