1994 MAZDA MX-5 battery

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

SRS AIR BAG SYSTEM T COMPONENT DESCRIPTION Component Air bag module Function Air bag system warning light Deploys air bag when current flows to integrated igniter Light illuminates or flashes if malfunction occurs in air bag system I EE with S-sensor, completes Circuit Clock spring I Ensures uninterrupted electrical connec- tion to air bag module while allowing turning of steering wheel Activated(closed) when crash impact de- Crash sensor Diagnostic module to infktor Activated(closed) when crash impact de- S-sensor 1 Monitors com~onents and harnesses in tected Acting with D-sensor, completes circuit to inflator Remark Located in instrument cluster Location: Driver side . . . . . . . . in steering wheel hub Passenger side . . . above the glove compartment Part of combination switch Located in front part of vehicle(left, right, and center) Located behind heater unit in passenger compartment Contains back-up battery air bag system Indicates system malfunction by flashing or illuminating air bag system warning light If warning light is bunt, sounds warning buzzer Detects short circuit between air bag module and ground or crash sensor rnal- function and melts system fuse to pre- vent unintended air bag deployment Gartner Banana

SRS AIR BAG SYSTEM SYSTEM DIAGRAM PASSENGER-SIDE S-SENSOR AIR BAG MODULE I IG1 B+ HORN RELAY CLOCK SPRING BACK-UP BATTERY I AIR BAG SYSTEM WARNING LIGHT SENSOR -7 System Operation During collision When either of the D-sensors and the S-sensor are activated (closed) simultaneously by shock of a colli- sion, the circuit to the inflator is completed. The inflator creates nitrogen gas and the air bag is deployed. The air bag vents the nitrogen gas from the vent hole on the back side of the bag to reduce shock to the driver and to allow easier exit from the vehicle. During normal condition and malfunction The diagnostic module constantly monitors the components and wiring of the air bag system for malfunc- tion, open circuits, and short circuits. .J If a malfunction is detected, the diagnostic module illuminates or flashes the warning light. In the case of a short circuit in the sensors or sensor harnesses, the diagnostic module activates the warning light and shuts down the system to prevent accidental deployment of the air bag. Gartner Banana

T SRS AIR BAG SYSTEM GENERALPROCEDURES Before Servicing 1. Deactivate the audio antitheft system, if installed. (Refer to page T-120.) 2. Disconnect the negative battery cable. 3. Remove the lower panel. 4. Disconnect the orange and blue clock spring connec- tors. 5. Remove the glove compartment. 6. Disconnect the orange and blue passenger-side air bag module connectors. I , 46UOTXd21 TROUBLESHOOTING Troubleshootinn Procedure The air bag diagnostic module has a self-diagnosis function that flashes or illuminates the AIR BAG sys- tem warning light to indicate trouble in the air bag system. The trouble can be determined by the warning light illumination or flashing pattern. If the light does not illuminate but the system still has trouble, a warn- ing buzzer will sound 5 cycles of 5 times each. . . Flowchart I START Troubleshoot warning light circuit Does AIR BAG system warning light illuminate for 4-8 secs and I I Yes t Refer to service code table and troubleshoot system Press horn switch while turning steering wheel. Does horn sound? I I I Yes Reconnect connectors Are air bag module and horn switch connectors properly con- nected to clock spring connec- tor? Yes I I I I Troubleshooting horn circuit - Gartner Banana

SRS AIR BAG SYSTEM T Service Code Table (With passenger-side air bag) Possible cause Flowchart No. Poor connection of diagnostic module priority connector Open circuit or poor connection of power source circuit code Output signal (Air bag system warning light) Remains ON Damaged D-sensor (D-sensor ON) 2 Poor installation of S-sensor Damaged S-sensor (S-sensor ON) 12 5 22 OFF OFF Open connection in S-sensor feed circuit S-sensor diagnosis circuit open High resistance or open circuit in driver- 8 32 OFF side air bag module circuit High resistance or open circuit in pas- senger-side air bag module circuit Low resistance in driver-side air bag module circuit I 11 1 35 ION- OFF b Low resistance in passenger-side air bag module circuit Open circuit between diagnostic module 10 and D-sensor - Poor installation of right D-sensor 113 144 ION- OFF 34 OFF Poor installation of center D-sensor 14 I 15 1 46 ION- OFF Poor installation of left D-sensor 45 System-down fuse burnt OFF 1 17 1 52 ( ON ml flk OFF Damaged back-up battery Damaged diagnostic module I 18 I 53 IoNm[~ OFF Poor connection of all D-sensor 19 I I I w Note If two or more troubles exist in the air bag system, the warning light indicates the cause of the trouble with the highest priority. T-163 99 Flashes quickly and continuously Gartner Banana

SRS AIR BAG SYSTEM T Possible cause Defective diagnostic module Defective S-sensor Defective wiring harness Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Service Code 12 Flowchart No.2 Step 2 Check the EGI IJN fuse. Symptom I Fuse I Action I Step 3 1. Disconnect the diagnostic module connector. 2. Connect the negative battery cable. 3. Measure the voltage at terminal 1 L (WIG) of the diagnos- tic module connector. OK Burnt B+: Battery positive voltage Voltage Action I Go to Step 3 Go to Step 4 Step 4 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1L (WIG) of the diagnostic module connector and ground. B+ Other Replace diagnostic module Repair wiring harness (EGI INJ fuse - Diagnostic module) I NO I GO to Step 5 I Continuity Yes Step 5 Check for continuity between terminal 1H (GIB) of the diagnostic module connector and ground. Continuity I Action Action Repair wiring harness (EGI INJ fuse - Diag- nostic module) and replace the fuse Yes ( Go to Step 6 No Replace diagnostic module (Refer to page T-208) Gartner Banana

SRS AIR BAG SYSTEM L Possible cause Defective air bag module(s) Defective clock spring Defective S-sensor Defective D-sensor Defective diagnostic Defective wiring harness Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Service Code 13 Flowchart No.3 Step 2 1. Connect the negative battery cable. 2. Turn the ignition switch ON and check the service code. Symptom Step 3 Service code 13 Other Warning Handling the air bag module improperly can acci- dently deploy the air bag, which may seriously in- jure you. Read SERVICE WARNINGS, page T-159, before handling the air bag module. Action Go to Step 5 Go to Step 3 1. Turn the ignition switch to LOCK. 2. Disconnect the negative battery cable. 3. Remove the driver-side air bag module. (Refer to page T-206.) 4. Connect the blue and orange clock spring connectors. 5. Connect the negative battery cable. 6. Turn the ignition switch to ON and check the service code. I Service code I Action 1 13 Other Replace combination switch (Refer to page T-19) Go to step 4 Gartner Banana

T SRS AIR BAG SYSTEM Step 4 1. Turn the ignition switch to LOCK. 2. Disconnect the negative battery cable. 3. Connect the blue and orange passenger-side air bag d module connectors. 4. Connect the negative battery cable. 5. Turn the ignition switch to ON and check the service code. I Service code I Action I I 13 Replace passenger-side air bag module (Refer to page T-207) I I mer I Replace driver-side air bag module (Refer to ~aae T-2061 I No I Go to Step 6 Step 5 1. Turn the ignition switch to LOCK. 2. Disconnect the diagnostic module connectors. 3. Check for continuity between terminal 2F (GY) of the diagnostic module connector and ground. Step 6 Check for continuity between terminal 2G (GN) of the diagnostic module connector and ground. I Continuity Action d Continuity Yes Step 7 Check for continuity between terminal 20 (GNV) of the diagnostic module connector and ground. Action Replace wiring harness Yes No Replace wiring harness Go to Step 7 I NO I GO to Step 9 ~d Continuity Yes Action Go to Step 8 Gartner Banana