1994 MAZDA MX-5 Workshop Manual

T AUDIO Gartner Banana

AUDIO T POWER ANTENNA Disassembly 1 Assembly 1. Antenna mast 2. Base 3. Base pad ,, 4. Ground plate 5. Ground base 6. Rod insulator 7. Mast assembly 8. Relay bracket 9. Antenna relay 10. Bracket 11. Motor drive unit 12. Drive mechanism 13. Drive mechanism cover Gartner Banana

Ix-osl, FUSE ANTENNA BLOCK 1OA 8 R/B J-3 MAIN FUSE BLOCK .POWER ANTENNA MAIN IGNITION m SWITCH L~W PMR ANTENNA MOTOR BR I I T Y w -13 REAR [R) -POHER ANTENNA ASSEMBLY J-14 POWER ANTENNA RELAY I I I Gartner Banana

AUDIO Inspection c Fuse ness. ml JHFDB If the antenna fails to raise or lower, make the following checks: 1. Check the antenna fuse (10A). 2. Replace fuse after checking and repairing wiring har- Power antenna 1. Check for continuity between the terminals of the power antenna relay. If there is no continuity, replace the relay. Terminal I M: Continuity 2. If the antenna does not function even though there is continuity, the problem may be either in the wiring har- ness or in the audio component assembly. 3. Apply battery positive voltage to the terminals and check the operation. I I A 1 B 1 DOWN I Function of antenna UP Battery Pos. D Neg. A Gartner Banana

T AUDIO / SNAP-RING OUN TlNG NUT BROKEN Antenna Mast Removal / Installation 1. Using snap-ring pliers, remove the mounting nut. 2. With the ignition switch at ACC or ON, turn the radio switch on, and pull out the antenna mast. Check the end of the plastic rack for damage. If the rack end is kinked or broken, replace the motor. 3. With the ignition switch at ACC or ON and the radio on, feed the rack of the new mast into the motor with toothed side facing toward the front of the vehicle. Turn the radio off. While the motor is retracting the rack, feed the mast into the motor. 4. Reinstall the mounting nut. 5. With the ignition switch at ACC or ON, turn the radio on and off a few times and check to see that the antenna op- erates smoothly. 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