1994 MAZDA MX-5 Workshop Manual

T SRS AIR BAG SYSTEM Possible cause Defective wiring harness Defective S-sensor Defective diagnostic module Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Service Code 23 Flowchart No.6 Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1 H (GIB) and 2C (G) of the diagnostic module connector. Symptom I No Go to Step 3 Continuity Yes Step 3 1. Disconnect orange and blue S-sensor connectors. 2. Check for continuity between terminal B and E of the S- sensor. Action Replace diagnostic module (Refer to pane T-208) No I Replace S-sensor (Refer to page T-213) I Continuity Yes Action Replace wiring harness Gartner Banana

SRS AIR BAG SYSTEM T i/ Possible cause Open circuit in wiring harness Damaged diagnostic module Flowchart No.7 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 2B (GNV) and 20 (GNV) of the diagnostic module connector. Symptom Continuity Action I Service Code 24 I Yes Replace diagnostic module (Refer to Daae T-208) - -- No I Replace wiring harness Gartner Banana

T SRS AIR BAG SYSTEM I Flowchart No.8 I Symptom I Service Code 32 I Possible cause a Defective driver-side air bag module a Defective clock spring Defective wiring harness a Defective diagnostic module Step 1 Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. Step 2 1. Install a jumper wire between terminals 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. I Other I Go to Step 3 I Service code 32 Step 3 Action Go to Step 4 Warning -- a 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. Turn the ignition switch to LOCK. Disconnect the negative battery cable. Remove the driver-side air bag module. (Refer to page T-206.) Remove the jumper wire from the clock spring connector and connect the clock spring connector. Install a jumper wire between terminals B and C of the driver-side air bag module connector. Connect the negative battery cable. Turn the ignition switch to ON and check the service code. I Service code Action I 32 Replace combination switch (Refer to page T-19) Other Replace driver-side air bag module (Refer to page T-206) Gartner Banana

SRS AIR BAG SYSTEM T 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 2D (GMI) and 2F (GY) of the diagnostic module connector. Action 45UOTX-301 Gartner Banana

T SRS AIR BAG SYSTEM 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. Service Code 33 Flowchart No.9 Step 2 1. Install a 1 -ohm (rated power 1 W) resistor between termi- nals B and C of the clock spring connector. 2. Install a jumper wire between terminals B and C of the passenger-side air bag module connector. 3. Connect the negative battery cable. 4. Turn the ignition switch to ON and check the service code. I Service code Action I Symptom Step 3 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 33 Other (GNV) of the diagnostic module connector. ' Go to Step 3 Replace passenger-side air bag module (Refer to page T-207) i I N o I Replace wiring harness Continuity Yes Action Replace diagnostic module (Refer to page T-208) Gartner Banana

SRS AIR BAG SYSTEM 1 Flowchart No.10 I Symptom I Service Code 34 I Possible cause Defective driver-side air bag module Defective clock spring 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 clock spring connector is broken. I Pin B I Action 1 I OK I GO to Step 3 I - -- -- - Broken I Replace wiring harness 1 Step 3 1. Install a 1 -ohm (rated power I W) resistor between termi- nals B and C of the passenger-side air bag module con- nector. 2. Connect the negative battery cable. 3. Turn the ignition switch to ON and check the service code. 1 Service code I Action 1 I Yes ( Replace wiring harness I 34 Other Go to Step 4 Go to Step 5 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 2F (GY) and 2D (GNV) of the diagnostic module connector. I Continuity I Action I No Replace diagnostic module (Refer to page T-208) Gartner Banana

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