1994 MAZDA MX-5 instrument cluster

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

T SRS AIR BAG SYSTEM I Flowchart No1 I Symptom I Air bag warning light remains ON I Possible cause Poor connection of diagnostic module connector Defective diagnostic module 0 Defective wiring harness CONNECTOR Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Verify that the diagnostic module connector is securely connected to the diagnostic module. 2. Verify that the shorting bar is in the fully retracted posi- tion. 3. If the connector and shorting bar are OK, go to step 3. Step 3 1. Disconnect the diagnostic module connector. 2. Remove the shorting bar from the diagnostic module connector. 3. Check the air bag system warning light. I Llght condltlon 1 Action I I I Illuminate I Repair wiring harness (Instrument cluster - Diagnostic module) I Not illuminate Replace diagnostic module (Refer to page T-208) Gartner Banana

Possible cause u 0 Burnt air bag warning light bulb Defective diagnostic module Defective wiring harness Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Air bag system warning light does not illuminate for 6 seconds Flowchart No.1 Step 2 1. Disconnect the diagnostic module connector. 2. Turn the ignition switch to ON. 3. Check the air bag warning light. I Llght condition I Action 1 Symptom 1 Illuminate I Replace diagnostic module (Refer to ~aae T-208) 1 -- I Not illuminate I GO to step 3 J Step 3 1. Remove the instrument cluster. 2. Check the air bag system warning light bulb. I Repair wiring harness (Diagnostic module--Instrument cluster) I Bulb Burnt Action Replace bulb .- Gartner Banana