headrest MAZDA MX-5 1994 Owner's Manual

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

AUDIO T INSPECTION Type 1 Door Speakers 1. Disconnect the connector from the suspected faulty speaker. 2. Measure resistance between terminals of the speaker. Resistance: 4R 3. If not as specified, replace the speaker. Headrest Speakers 1. Disconnect the headrest speaker connector. 2. Measure resistance between the terminals of the head- rest speaker connector as shown. I Terminal I Resistance I 3. If not as specified, replace the speaker. A-B C-D Type 2 Door Speakers 1. Disconnect the connector from the suspected faulty door speaker. 2. Measure the resistance between the terminals of the speaker. 4R I I Woofer I 452 1 Speaker type 3. If not as specified, replace the door speaker. Resistance Headrest speakers 1. Disconnect the headrest speaker connector. 2. Measure the resistance between the terminals of the headrest speaker. Tweeter I 9~ Resistance: 851 3. If not as specified, replace the headrest speaker. Bodysonic 1. Disconnect the headrest speaker and bodysonic con- nector. 2. Measure the resistance between the terminals of the headrest speaker and bodysonic connector. Resistance: 8R 3. If not specified, replace the bodysonic or repair wiring harness. Gartner Banana

AUDIO CONNECTOR TERMINAL SPECIFICATIONS Type 1 Component I Connector audio unit Terminal A: Headrest speaker left F : Headrest speaker right $ B: Headrest speaker left H: Headrest speaker right C: NC I : NC D: NC J: NC 4: ACC H: NC B: NC J: NC C: B+ K: Door speaker left $ D: NC L : Door speaker left 0 E : TNS (for illumination M: Door speaker right $ light) N: Door speaker right 0 F: NC 1 : Left signal 8 : B+ 2 : Left signal 9 : Amp control signal 3 : Right signal 10: NC 4 : Right signal 11 : NC 5 : Signal ground 12: NC 6 : Illumination signal 13: NC 7 : ACC E : Shield earth 1 : Left signal 8: B+ 2 : Left signal 9 : Amp control signal 3 : Right signal 10: NC 4 : Right signal 11 : NC 5 : Signal ground 12: NC 6 : Illumination signal 13: NC 7: ACC E : Shield earth B+: Battery positive voltage - - - - - 45UOTX-277 Bt: Battery positive voltage .-I Component Audio unit Connector I Terminal A: ACC H: N.C. B: System mute J : N.C. C: B+ K : Door speaker left $ D: ANTSW L : Door speaker left 9 E: TNS M: Door speaker right @ F : Illumi (OUT) N: Door speaker right 9 A: Speaker left @ F : Speaker right $ B: Speaker left 9 H: Speaker right 9 C: N.C. I : N.C. D: N.C. J : N.C. 1 : Output right 5 : Output left 2 : +I 3.2V Control Power 6: GND 3 : Output left E : Shield earth 4 : Output right Gartner Banana

AUDIO Component 4LC (AUTO LEV- Terminal A: Speaker left F : Speaker right B: Speaker left H: Speaker right C: N.C. I : N.C. D: N.C. J : N.C. Connector BID A : Headrest speaker left H: Headrest speaker right B : Headrest speaker left I : System mute C: ACC J : ALC (INSTRUMENT D: Illurni (IN) CLUSTER) F : Headrest speaker right A: Bodysonic right C: Bodysonic left B: Bodysonic right D: Bodysonic left AICW FI H 1 : Input right 5 : Input left 2 : +13.2V Control Power 6: GND 3 : Input left E : Shield earth 4 : lnput right I J Gartner Banana