ad blue MAZDA MX-5 1994 Owner's 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

T SRS AIR BAG SYSTEM Possible cause ij Defective diagnostic module Defective wiring harness Defective S-sensor Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Service Code 12 Flowchart No.3 Step 2 Check the ENGINE fuse. Fuse Action I Symptom 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- OK Burnt tic module connector. Go to Step 3 Go to Step 4 B+: Battery positive voltage - Other Repair wiring harness iEGI INJ fuss-Diaanostic module1 I Voltage B+ -- ~ Action Replace diagnostic module (Refer to page T-208) I NO Replace diagnostic module (Refer to Daae T-2081 Step 4 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1 H (GIB) of the diagnostic module connector and ground. Step 5 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between terminal 2C (G) of the diag- nostic module connector and ground. 1 Continuity Action 1 Continuity Yes Action Go to Step 5 Yes No Replace wiring harness Go to Step 6 L Gartner Banana

SRS AIR BAG SYSTEM Step 6 Check for continuity between terminal 1H (G/B) of the diagnostic module connector and ground. I Flowchart No.4 I Symptom I Service Code 21 I Continuity Yes I No I Replace S-sensor (Refer to page T-213) I Action Replace air bag wiring harness and EGI INJ fuse Possible cause Defective S-sensor Defective wiring harness Defective diagnostic module Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1 E (RIB) of the diagnostic module connector and ground. I Continuitv Action 1 Yes Replace diagnostic module (Refer to page T-208) I NO I GO to step 3 Step 3 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between terminal A of the S-sensor and ground. Continuity 1 Action I 1 yes I Replace wiring harness I I No I Replace S-sensor (Refer to page T-213) I Gartner Banana

T SRS AIR BAG SYSTEM Possible cause Defective diagnostic module Defective S-sensor Defective wiring harness Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1 H (GIB) or 2C (G) and terminal 28 (GNV) or 2D (GNV) of the diagnostic module connector. Step 3 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between termional B or E and termi- nal C or D of the S-sensor connector. Continuity Yes No I Continuity Action I Action Replace diagnostic module (Refer to page T-208) Go to Step 3 1 Yes I Replace S-sensor (Refer to page T-213) I I I NO I Replace wiring harness I Gartner Banana

SRS AIR BAG SYSTEM T Possible cause Defective S-sensor Defective wiring harness Defective diagnostic module Flowchart No.6 Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminals 2C (G) and 1 H (G/B) of the diagnostic module connector. I Continuity I Action I Symptom Service Code 23 Step 3 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between terminals E and B of the S-sensor. Yes No Replace diagnostic module (Refer to page T-208) Go to Step 3 I No I Replace S-sensor (Refer to ~aae T-213) I Continuity Yes Action Replace wiring harness Gartner Banana

SRS AIR BAG SYSTEM T Step 5 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between terminal C of the S-sensor and ground. Continuity Action 1 Yes Step 6 Check for continuity between terminal 1A (BFUR) of the diagnostic module connector and ground. Replace S-sensor and then replace diagnos- tic module No Replace wiring harness and then replace diag- nostic module - - I NO I Go to Step 8 Continuity Step 7 1. Disconnect the center D-sensor connector. 2. Check for continuity between terminal B of the center D-sensor and ground. Action I Continuitv Action 1 Yes I GO to ~te~ 7 Step 8 Check for continuity between terminal 2L (BR/B) of the diagnostic module connector and ground. Yes No -- Replace center D-sensor and then replace diagnostic module Replace wiring harness and then replace diag- nostic module I NO I GO to Step 10 Continuity Yes Action Go to Step 9 Gartner Banana

SRS AIR BAG SYSTEM Possiblecause Defective wiring harness Defective S-sensor Defective diagnostic module Flowchart No.16 Step 1 Carry out "Before Servicing" procedure under GEN- ERAL PROCEDURES, page T-1 60. Step 2 1. Disconnect the diagnostic module connector. 2. Check for continuity between terminal 1 H (GIB) of the diagnostic module connector and ground. Continuity Action I Symptom Yes I Go to Step 3 I Service Code 52 Step 3 1. Disconnect the orange and blue S-sensor connectors. 2. Check for continuity between terminal B of the S-sensor and ground. No Replace diagnostic module (Refer to page T-208) I No 1 Re~lace wirina harness I Continuity Yes Action Replace S-sensor (Refer to page T-213) Possible cause Internal failure of diagnostic module Flowchart No.17 Remedy Replace the diagnostic module. (Refer to page T-208.) Symptom Service Code 53 Gartner Banana

SRS AIR BAG SYSTEM DRIVER-SIDE AIR BAG MODULE Removal I Installation Warning 4 Handling the air bag module improperly can accidently deploy the air bag, which may serious- ly injure you. Read SERVICE WARNINGS, page T-159, before handling the air bag module. 1. Carry out "Before Servicing" procedure under GENERAL PROCEDURES, page T-160. 2. Remove in the order shown in the figure. 3. Install in the reverse order of removal. 4. Follow the troubleshootina flowchart (page T-160) to verify that the air bag system is operating normally. 1. Bolts 2. Support rope 3. Driver-side air bag module Installation note . . . . . . . . . . . . . . . . . below Installation note Driver-side air bag module 1. Connect the blue and orange clock spring connectors. 2. Connect the negative battery cable. 3. Turn the ignition switch to ON and verify that service code 32 is set. 4. If another service code is set, troubleshoot the system. 5. If service code 32 is set, turn the ignition switch to OFF and disconnect the negative battery cable. 6. Disconnect the orange and blue clock spring connec- tors. 7. Install the driver-side air bag module. Gartner Banana

SRS AIR BAG SYSTEM T PASSENGER-SIDE AIR BAG MODULE Removal I Installation b Warning Handling the air bag module improperly can accidently deploy the air bag, which may serious- ly injure you, Read SERVICE WARNINGS, page T-159, before handling the air bag module. 1. Carry out "Before Servicing" procedure under GENERAL PROCEDURES, page T-160. 2. Remove the glove compartment. 3. Remove in the order shown in the figure. 4. Install in the reverse order of removal. 1. Bolts 2. Support rope 3. Passenger-side air bag module Installation note . . . . . . . . . . . . . . . . . below Installation note Passenger-side air bag module 1. Connect the blue and orange clock spring connectors. 2. Connect the negative battery cable. 3. Turn the ignition switch to ON and verify that service code 33 is set. 4. If another service code is set, troubleshoot the system. 5. If service code 33 is set, turn the ignition switch to OFF and disconnect the negative battery cable. 6. Disconnect the orange and blue clock spring connec- tors. 7. Install the driver-side air bag module. Gartner Banana

SRS AIR BAG SYSTEM T 2-PIN CONNECTOR I CLOCK SPRING Inspection Warning Handling the air bag module improperly can accl- dently deploy the air bag, which may seriously in- jure you. Read SERVICE WARNINGS, page T-159, before handling the air bag module. 1. Carry out "Before Servicing" procedure under GENER- AL PROCEDURES, page T-160. 2. Remove the Driver-side air bag module. (Refer to page T-206.) 3. Check for continuity between terminals of the clock spring. 4. If not as specified, replace the combination switch. (Refer to page T-18.) 5. Connect the blue and orange clock spring connectors. 6. Check if the pin B of the clock spring connector (harness- side) is broken. 7. If pin B is broken, replace the wiring harness. 8. Check if the pin B of the driver-side air bag module con- nector (on clock spring) is broken. 9. If pin B is broken, replace the combination switch. 10. Disconnect the diagnostic module connector. Terminals 11. Connect the blue and orange clock spring connectors. A 0 12. Check for continuity between terminals B and C of the clock spring. 13. If continuity exists, replace the combination switch. 1 0---0: Continuity B 0 C n 2A n 28 0 3A 0 Gartner Banana