Mazda MX-5 1990 Workshop Manual page 701

05UOTX-263
05UOTX-264
AUDIO
T
Step 8
1. Check if the headrest speaker connector is properly con-
nected.
2. If necessary, repair or reconnect the connector.
3. If the connection is OK, go to Step 9.
Step 9
1. Disconnect the headrest speaker connector.
2. Measure resistance between terminals of the headrest
speaker connector as shown.
Resistance
40
3. If not as specified, replace the speaker.
4_ If the resistance is OK, go to Step 10.
Step 10
1. Disconnect the 8-pin connector of the audio unit.
2. Disconnect both headrest speaker connectors_
3. Check for continuity of the following wires of the headrest
speakers wire harness.
Connectors Wire
Continuity
(RIY)
Yes
Audio unit - Driver seat headrest speakers
(R/L)
Yes
(L/W) Yes
(L/O)
Yes
(R/Y)
Yes
Audio unit - Passenger seat headrest
(R/L)
Yes
speakers
(L/W)
Yes
(L/O)
Yes
4. If not as specified, repair the faulty wiring.
5. If the wiring is OK, replace the audio unit.
T-119