AIR BAG MAZDA MX-5 1994 Owner's Manual

SWITCH T SWITCH STRUCTURAL VIEW 1. Ignition switch 2. Combination switch 3. Retractor switch 4. Hazard warning switch DESCRIPTION Combination Switch The combination switch is includes a clock spring type electrical connector for supplying electrical cur- rent to the air bag module and horn switches. When installing the combination switch, make sure the clock spring connector is properly aligned. If it is not, it may be broken or the steering wheel may not turn fully. (Refer to page T-19.) 45UOTX-022 Gartner Banana

SWITCH T COMBINATION SWITCH Removal 1 Installation 1. Disconnect the negative battery cable. - 2. Remove as shown in the figure. 3. Install in the reverse order of removal. Before installing the steering wheel, reset the clock spring connec- tor. COLUMN COVER TURN CLOCKWIS RETURN 2.75 TURNS - STEERING WHEEL / AIR BAG MODULE Clock spring connector adjustment 1. Set the front wheels straight ahead. 2. Turn the clock spring connector clockwise until it stops. Caution Do not force the front wheels straight ahead. 3. Return the connector 2.75 turns. 4. Align the marks on the clock spring connector and the outer housing. Gartner Banana

T WARNING LIGHT AND SENDER UNIT WARNING LIGHT AND SENDER UNlT STRUCTURAL VIEW 1. Brake system warning light 2. Seat belt warning light 3. Air bag system warning light 4. Retractor indicator light 5. Alternator warning light 6. MIL (malfunction indicator light) 7. O/D OFF indicator light 8. Antilock brake system warning light 9. Washer level indicator light 10. Rear window defroster indicator light Reference Table Warning indicator light SRS air bag system Retractor indicator light Alternator MIL (malfunction indicator light) O/D OFF Antilock brake system Washer level 45UOTX-062 T-34 Reference page or section T-154 T- 48 section G section F section K section P T- 39 J Gartner Banana

:-2 .BACK-UP LIGHTS .HORN .STOPLIGHTS .HIGH-MOUNT STOPLIGHT MAIN FUSE BLOCK MAIN BUB TRAOE NUMBER ma-u~ LIGHTS: 11% (~WI Ix-oal OoA FUSE BLOCK \ ,, HIGH-HOUNT STOPLIGHT: 921 (l8.4W) STOP STRIGHTS: 1157 (27Wl PARK/NEUTRAL W/R (F) << IX-MI 15* FUSE BLOCK W/G IF) 0 F-O2k=zz& hORN RELAY F-03 G/O (F) STOR IGHT -5t SWITCH F-03 BACK-LP G/R LIGHT SWITCH OATA LINK PASSENGER-SIOE CONNECTOa (F) AIR BAG MOOWE (SECTION U! R/G (F) z:zzzz::zzzz:zz: G/R IF) F-0.551 HORN 0RIVE;I-SIOE AIR BAG MOOULE . E-19 E-20 A B B (R) (Rl A - VW REAR COnsINATION LIGHT F-05 HORN (F) F-06 PASSENGER-SIDE AIR BAG MXIULE(F) I U j-03 ORIVER-SIOE S-W PASSENGER-SIOE A:R BAG nrrmE (F) AIR BAG MX)UE (F) Gartner Banana

MAIN FUSE @LOCK MAIN EUE TRADE NUMBER W (F) EACX-uP LIGHTS: 1156 (2%) Ix-oal FUSE BLOCK U ,, HIGH-MOUNT STOPLIGHT: Q1 (18.4W) STOP STCRIMTS: 1157 (27WI PARK/NEUTRAL W/R (F) - SWITCH OoA [X-031 Ix-olll 15A (SECTION H-1) FUSE ELDCK WG (F) 1 MTER 0 L (Fl HORN RELAY G/O (F) STOPLIGHT -12 SWITCH OWERTRAIN ONTROL ACK-UP G/R IGHT AT DATA LINK PASSENGER-SIDE CONNECTW RUISE CONTROL UNIT AIR BAG MOOVLE (SECTION U) m38 ::::s::t::z:::== R/G IF) t G/R G/O t I (F) (Fl G T I R/G G I I (R) (R) R/G G [R) (R) (R) 0, WW REAR COMBINATION LIGHT .BACK-UP LIGHTS .HORN .STOPLIGHTS 1 HIGH-MOUNT STOPLIGHT 1 :-06 PASSENGER-SIOE AIR 8AG HOOULE (F) U i-04 PASSENGER-SIDE AIR BAG MOWLE (F) Gartner Banana

1 mw GRIVER-SIDE AIR BAG MOOULE :-2 SWITCH [a-. .BACK-UP LIGHTS .HORN .STOPLIGHTS .HIGH-MOUNT STOPLIGHT 1 REAR COHeINATION LIGHT '-05 HORN (F) S-03 DRIVEA-SIDE AIR BAG mlDlhE (F) :-06 PASSENGER-SIDE AIR BAG WDULE (F) j-04 PASSENGER-SIDE AIR BAG WOULE (F) Gartner Banana

T HORN Symptom: Horn does not sound. 05UOTX-191 Step 1 1. Check the STOP 15A fuse. 2. If the fuse is burned, replace it. Check and repair the wire harness, if necessary. 3. If the fuse is OK, go to Step 2. Step 2 1. Disconnect the horn connector. 2. Apply battery positive voltage to the horn, and check if the horn sounds. 3. If the horn sounds, go to Step 3. 4. If the horn does not sound, replace the horn. Step 3 1. Remove the knee protector. 2. Ground the terminal B (GIO) of the horn relay connector. 3. If the horn sounds, go to Step 4. 4. If the horn does not sound, go to Step 6. Step 4 1. Disconnect the negative battery cable. 2. Remove the air bag module. (Refer to page T-204.) 3. Check for continuity between the terminal of the horn switch connector and the steering shaft. I OFF I No I Horn switch ON 4. If correct, go to Step 5. 5. If not as specified, replace the horn switch and steering wheel as an assembly. Verify that the air bag system is operating normally by monitoring the air bag warning light. Continuity Yes Gartner Banana

T HORN TURN CLOCKWISE T RETURN 2.75 TURNS +I 2. Remove the air bag module and then remove the steer- ing wheel assembly. d 3. Before installation of the steering wheel reset the clock spring connector as follows: (1) Set the front wheels straight ahead. (2) Turn the clock spring connector clockwise until it stops. (3) Return 2.75 turns. (4) Align the marks (counterclockwise) on the clock spring connector and the outer housing. 4. Install the steering wheel and the air bag module. Verify that the air bag system is operating normally by monitor- ing the air bag warning light. Gartner Banana

T SRS AIR BAG SYSTEM SRS AIR BAG SYSTEM PREPARATION SST 46UOTX-812 STRUCTURAL VIEW 49 H066 002 Deployment tool 1. Driver-side air bag module Removal I Installation ...... page T-206 Disposal procedure ........ page T-215 2. Passenger-side air bag module Removal I Installation ...... page T-207 Disposal procedure ........ page T-215 3. Clock spring Removal I Installation ...... page T- 19 Inspection ................ page T-209 For deployment of air bag module 4. Diagnostic module Removal / Installation ...... page T-208 5. Crush sensor (D-sensor) Removal / Installation ...... page T-210 Inspection ................ page T-212 6. Crash sensor (S-sensor) Removal I Installation ...... page T-213 Inspection ................ page T-214 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