1994 MAZDA MX-5 Workshop Manual

T AUDIO Step 6 1. Remove the door speaker (tweeter). (Refer to page T-146.) 2. Make sure the speaker is properly connected. 3. If the connections are OK, go to Step 7. 4. If a connection is poor, repair it. Step 7 1. Disconnect the connector from the suspected faulty door speaker. 2. Measure the resistance between the terminals of the door speaker (tweeter). Step 8 1. Remove the audio unit. (Refer to page T-145.) 2. Make sure the audio unit connectors are properly con- nected. 3. If the connections are OK, go to Step 9. 4. If a connection is poor, repair it. Resistance 9R Other Step 9 1. Check for continuity between the network connector (4-pin) and the door speaker (tweeter) connector (2-pin). Action Go to Step 8 Replace speaker Network I 'paller I connector 'peaker I Continuity I I connector 2. If correct, go to Step 10. 3. If not as specified, repair the wiring. Right door Left door I C (UR) &pin tt A (UR) 2-pin D (BIL) &pin tt B (BIL) 2-pin C (UR) &pin tt A (UR) 2-pin D (BIL) 4-pin tt B (BIL) 2-pin Yes Yes Yes Yes Gartner Banana

AUDIO T Step 10 1. Check for continuity between the network connector (4-pin) and the AM-FM radio unit connecter (12-pin). Network I 'peaker I connector 'Waker 1 Continuity I I connector I I 35UOTX-093 2. If correct, redace the network. Right door Left door 3. If not as specified, repair the wiring. Step 11 1. Remove the headrest speaker. (Refer to page T-147.) 2. Make sure the speaker is properly connected. 3. If the connections are OK, go to Step 12. 4. If a connection is poor, repair it. I A (WG) 4-pin t, M (VY) 12-pin B (W) 4-pin ++ N (L) 12-pin A (WG) *in ++ K (WG) 1 2-ph B (WW) 4-pin tt L (WW) 1 P-pin Step 12 1. Disconnect the headrest speaker connector. 2. Measure the resistance between the terminals of the headrest speaker connector. Yes Yes Yes Yes Resistance Actlon 8Q Go to Step 13 Step 13 1. Remove the audio unit. (Refer to page T-145.) 2. Make sure the audio unit connector and DIN cord are properly connected. 3. If the connections are OK, go to Step 14. 4. If a connection is poor, repair it. Gartner Banana

T AUDIO Step 14 1. Turn the ignition switch to ACC. 2. Measure the voltage at terminal C (UB) of the auto level controller connector (&pin). .J B+: Battery positive voltage I voltage Action Step 15 1. Disconnect the auto level controller DIN cord (&pin). 2. Measure the voltage at terminal 2 of the DIN cord. B+ Other Go to Step 15 Repair wiring harness CIGAR fuse - Auto level controller B+: Battery positive voltage Step 16 1. Check for continuity between the auto level controller connector (&pin) and the headrest speaker and body- sonic connector (&pin). Voltage B+ Other Action Go to Step 16 Replace AMFM radio unit 2. If correct, replace the auto level controller. 3. If not as specified, repair the wiring. I Speaker Right headrest Left headrest ALC I 'peaker connector connector H (VW) 8-pin +t C (LMI) 6-pin B (UO) &pin ++ D (LO) 6-pin F (RIL) &pin o B (RIL) Gpin A (W) &pin o A (W) 6-pin continuity Yes Yes Yes Yes .- / Gartner Banana

AUDIO T Symptom: Bodysonic will not play Possible cause Damaged bodysonic Damaged audio unit Damaged DIN cord Open or short circuit in wiring harness Poor connection of connector Open or short circuit in DIN cord 45UOTX-269 Step 1 1. Remove the audio unit. (Refer to page T-145.) 2. Make sure the audio unit connector and DIN cord are properly connected. 3. If the connections are OK, go to Step 2. 4. If a connection is poor, repair it. Step 2 1. TI~ the ignition switch to ACC. .. .-... 2. Measure fhe voltage at terminal C (UB) of the auto level controller connector (8-pin). B+: Battery positive voltage Step 3 1. Disconnect the auto level controller DIN cord (6-pin). Voltage B+ Other 2. Measure the voltage at terminal 2 of the DIN cord. Action Go to Ste~ 3 J Repair wiring harness (CIGAR fuse - Auto level controller) B+: Batterv ~ositlve voltage I Other I Replace AMaFM radio unit . . - Step 4 1. Make sure headrest speaker and bodysonic connectors are properly connected. 2. If the connections are OK, go to Step 5. 3. If a connection is poor, repair it. Voltage B+ Action Go to Stea 4 Gartner Banana

AUDIO Step 5 1. Disconnect the connector from the suspected faulty headrest speaker and bodysonic. 2. Measure the resistance between the terminals E(G) and w F(G/B) of the headrest speaker and bodysonic connec- tor. I Other I Replace bodysonic I Resistance Step 6 1. Check for continuity between the auto level controller connector (4-pin) and the headrest speaker and body- sonic connector (&pin). Action 1 !::gg 1 continuity I 'peaker I connector I 8!2 I GO to Ste~ 4 I -- ~~ B (RAW) 4-pin ++ F (LN) win Driver-side I A (WB) 4-pin ++ E (UB) 6-pin I Yes Passenger-side 2. If the wiring is OK, replace the auto level controller. 3. If not as specified, repair the wiring. I D (W) 4-pin ++ F (WW) win C (UB) 4-pin +t E (RIB) 6-pin Yes Gartner Banana

AUDIO T REMOVAL / INSTALLATION Remove and install as shown in the figure. AUDIO UNIT 05UOTX-26 MANUAL ANTENNA Gartner Banana

-I- AUDIO DOOR SPEAKERS AND NETWORK Gartner Banana

AUDIO T HEADREST SPEAKERS AND BODYSONIC TYPE 1 HEADRESTSPEAKER TYPE 2 HEADRES Gartner Banana