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AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE [AIR BAG SYSTEM]

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2016 – MX-5 – Restraints

AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE [AIR BAG SYSTEM]

Description

  • Air bag system warning light does not illuminate while the air bag system is performing initialization.

Possible cause

  • Air bag system warning light circuit malfunction

  • Air bag system warning light (LED) malfunction

  • Instrument cluster malfunction

  • Communication error between SAS control module and instrument cluster

  • SAS control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT OTHER WARNING AND INDICATOR LIGHTS CIRCUIT IN INSTRUMENT CLUSTER

  • Switch the ignition ON (engine off or on).

  • Do other warning and indicator lights illuminate?

Yes

Go to the next step.

No

Inspect the instrument cluster power supply system and ground system, then go to Step 3.

2

INSPECT DTCs IN SAS CONTROL MODULE

Yes

Perform the applicable DTC inspection, then go to Step 5.

(See DTC TABLE [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].)

(See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)

No

Go to the next step.

3

VERIFY WHERE MALFUNCTION IS IN WARNING LIGHTS INDICATION CIRCUIT OR ELSEWHERE

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Then go to Step 5.

4

INSPECT DTCs IN INSTRUMENT CLUSTER

Yes

Perform the applicable DTC inspection, then go to the next step.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Go to the next step.

5

VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR

  • Switch the ignition off.

  • Switch the ignition ON (engine off or on).

  • Does the air bag system warning light operate properly?

Yes

Verify that there are no DTCs in the memory. If there are no DTCs, the troubleshooting is completed.

No

Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.

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