AIR BAG MAZDA MX-5 1994 Repair Manual

T SRS AIR BAG SYSTEM 2-PIN CONNECTOR 45UOTX-30E Step 5 Warning Handling the air bag module improperly can acci- ii dently deploy the air bag, which may seriously in- jure you. Read SERVICE WARNINGS, page T-159, before handling the air bag module. 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. Check if the pin B of the clock spring connector is broken. I Pin B I Action 1 OK I Go to Step 6 I Step 6 1. Connect the clock spring connector. 2. Check if the service code 34 still set. I Code 34 set I Action 1 Broken I Yes I Replace combination switch (Refer to paae T-19) Replace combination switch (Refer to page T-19) 1 -- - No Replace driver-side air bag module (Refer to page T-206) Gartner Banana

SRS AIR BAG SYSTEM T I Flowchart No.11 I Symptom Ice Code 35 Possible cause Defective passenger-side air bag module Defective wiring harness Defective diagnostic module Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 Check if the pin B of the passenger-side air bag module connector. Step 3 1. Install a 1 -ohm (rated power 1 W) resistor between termi- nals B and C of the clock spring connector. 2. Connect the negative battery cable. 3. Turn the ignition switch to ON and check the service code. Pin B OK Broken Action Go to Step 3 Redace wiring harness I Other 1 Replace passenger-side air bag module (Refer to oaae T-207) I Service code 35 Step 4 1. Turn the ignition switch to LOCK. 2. Disconnect the negative battery cable. 3. Disconnect the diagnostic module connector. 4. Check for continuity between terminals 2G (GN) and 2D (GMI) of the diagnostic module connector. Action Go to Step 4 I Continuitv - Action Yes No I Replace wiring harness Replace diagnostic module (Refer to page T-208) Gartner Banana

T SRS AIR BAG SYSTEM m~No.12Iy~m~torn I Service Code 41 Possible cause Poor connection of D-sensor connector Defective D-sensor Defective wiring harness Defective diagnostic module Step 3 1. Disconnect the suspect sensor connector. 2. Measure the resistance between terminal A of the sen- sor and ground. Measure I Action I Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Disconnect the diagnostic module connector. 2. Measure the resistance between terminals 1C (BWG), 1 A (BWR), and 2L (BWB) of the diagnostic module con- nector and ground. 45UoTX-311 1.18kn Other - Resistance All , .18 kSL Other Replace wiring harness Replace sensor Action Replace diagnostic module (Refer to page T-208) Suspect sensor: Terminal 1 C -+ right D-sensor Terminal 1 A --+ Center D-sensor Terminal 2L -+ left D-sensor Go to Step 3 Gartner Banana

SRS AIR BAG SYSTEM i/ Possible cause Poor installation of right D-sensor Defective right D-sensor Defective wiring harness Defective diagnostic module Flowchart No.13 Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 2J (BRN) of the diagnostic module connector and ground. I Continuity I Action 1 Symptom Service Code 44 Yes No I Yes I Replace wiring harness I Replace diagnostic module (Refer to page T-208) Go to Step 3 .I Step 3 1. Disconnect the right D-sensor connector. 2. Check for continuity between terminal B of the right D- sensor and ground. Continuity Action I No Replace right D-sensor (Refer to page T-210) Gartner Banana

T SRS AIR BAG SYSTEM I Flowchart No.14 1 Symptom I Service Code 45 Possible cause Poor installation of center D-sensor Defective center D-sensor Defective wiring harness Defective diagnostic module Step 1 Carry out "Before Servicingw procedure under GENER- AL PROCEDURES, page T-160. No Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 2H (BWW) of the diagnostic module connector and ground. Continuity Action 1 Replace center D-sensor (Refer to page T-210) I - . - No 1 Go to Step 2 I Yes Step 3 1. Disconnect the center D-sensor connector. 2. Check for continuity between terminal B of the center D- sensor and ground. I Continulty Action I Replace diagnostic module (Refer to Dane T-2081 I I Yes I Replace wiring harness I Gartner Banana

SRS AIR BAG SYSTEM T Possible cause Poor installation of left D-sensor Defective left D-sensor Defective wiring harness Defective diagnostic module Flowchart No.15 Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 2E (BR) of the diagnostic module connector and ground. Symptom I Continuity I Action I Service Code 46 Step 3 1. Disconnect the left D-sensor connector. 2. Check for continuity between terminal B of the left D-sen- sor and ground. Yes No Replace diagnostic module (Refer to page T-208) Go to Step 3 I No Replace left D-sensor (Refer to page T-210) Continuity Yes Action Replace wiring harness Gartner Banana

T SRS AIR BAG SYSTEM I Flowchart No.16 I Symptom I Service Code 51 I Possible cause Blown internal fuse in diagnostic module (fault conditions no longer present) 0 Diagnostic module not replaced after service code 13 set and conditions corrected. Intermittent short in air bag deployment circuit. Remedy If repairs were made for a service code 13, replace the diagnostic module. If an intermittent short is sus- pected, inspect the wiring harnesses and connectors for damage. If they are not damaged, wiggle the harnesses and connectors to induce the intermittent short; service code 13 will be set when the fault is induced. Then follow the troubleshooting procedure for service code 13. 36EOTX-143 Gartner Banana

SRS AIR BAG SYSTEM T Possible cause Defective wiring harness Defective S-sensor Defective diagnostic module Flowchart No.17 Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1H (GIB) of the diagnostic module connector and ground. I Continuity Action I Symptom I Yes I Go to Step 3 Service Code 52 Step 3 1. Disconnect the S-sensor connector. 2. Check for continuity between terminal B of the S-sensor and ground. I Continuity I Action I No Replace diagnostic module (Refer to page T-208) Yes No Replace S-sensor (Refer to page T-213) Replace wiring harness Gartner Banana

T SRS AIR BAG SYSTEM Possible cause e Damaged diagnostic module Remedy Replace the diagnostic module. (Refer to page T-208) Service Code 53 Flowchart No.18 I Flowchart N0.19 I Symptom ( Service Code 99 Symptom Possible cause Poor connection of all D-sensor and S-sensor Remedy Connect all D-sensor and S-sensor connectors. 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