NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE [TYPE A]

id0803d3800200

1

Air bag system warning light does not illuminate.

DETECTION CONDITION

Malfunction in air bag system warning light circuit (short to ground)

POSSIBLE CAUSE

•  Instrument cluster (circuit board) malfunction

•  Short to ground circuit in wiring harness between instrument cluster and SAS control module

•  Air bag system warning light (LED) 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 to ON.

•  Do other warning and indicator lights illuminate?

Yes

Switch the ignition to off, then 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

•  Inspect the DTC for the SAS control module on-board diagnostic system.

•  Have DTCs been recorded in memory?

Yes

Perform the applicable DTC inspection, then go to Step 5. (See DTC TABLE [TYPE A].)

No

Go to the next step.

3

VERIFY WHERE MALFUNCTION IS IN WARNING LIGHTS INDICATION CIRCUIT OR ELSEWHERE

•  Turn on all warning lights and indicator lights using the instrument cluster PID WL+IL of simulation function using the M-MDS.
(See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].)

•  Do other waning and indicator lights illuminate?

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

•  Inspect the DTC for the instrument cluster on-board diagnostic system.

•  Have DTCs been recorded in memory?

Yes

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

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Go to the next step.

5

CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR

•  Switch the ignition to off.

•  Disconnect the negative battery cable and wait for 1 min or more.

•  Connect all SAS control module connectors.

•  Connect the driver and passenger-side
pre-tensioner seat belt connectors.

•  Connect the lap pre-tensioner seat belt connector.

•  Connect the driver and passenger-side curtain air bag module connectors.

•  Connect the driver and passenger-side front seat connectors.

•  Connect the passenger-side air bag module connector.

•  Connect the clock spring connector.

•  Connect the negative battery cable.

•  Switch the ignition to 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.

1	Air bag system warning light does not illuminate.
DETECTION CONDITION	Malfunction in air bag system warning light circuit (short to ground)
POSSIBLE CAUSE	• Instrument cluster (circuit board) malfunction • Short to ground circuit in wiring harness between instrument cluster and SAS control module • Air bag system warning light (LED) malfunction • Communication error between SAS control module and instrument cluster • SAS control module malfunction

STEP	INSPECTION		ACTION
1	INSPECT OTHER WARNING AND INDICATOR LIGHTS CIRCUIT IN INSTRUMENT CLUSTER • Switch the ignition to ON. • Do other warning and indicator lights illuminate?	Yes	Switch the ignition to off, then go to the next step.
1		No	Inspect the instrument cluster power supply system and ground system, then go to Step 3.
2	INSPECT DTCS IN SAS CONTROL MODULE • Inspect the DTC for the SAS control module on-board diagnostic system. • Have DTCs been recorded in memory?	Yes	Perform the applicable DTC inspection, then go to Step 5. (See DTC TABLE [TYPE A].)
2		No	Go to the next step.
3	VERIFY WHERE MALFUNCTION IS IN WARNING LIGHTS INDICATION CIRCUIT OR ELSEWHERE • Turn on all warning lights and indicator lights using the instrument cluster PID WL+IL of simulation function using the M-MDS. (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].) • Do other waning and indicator lights illuminate?	Yes	Go to the next step.
3		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Then go to Step 5.
4	INSPECT DTCS IN INSTRUMENT CLUSTER • Inspect the DTC for the instrument cluster on-board diagnostic system. • Have DTCs been recorded in memory?	Yes	Perform the applicable DTC inspection, then go to the next step. (See DTC TABLE [INSTRUMENT CLUSTER].)
4		No	Go to the next step.
5	CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR • Switch the ignition to off. • Disconnect the negative battery cable and wait for 1 min or more. • Connect all SAS control module connectors. • Connect the driver and passenger-side pre-tensioner seat belt connectors. • Connect the lap pre-tensioner seat belt connector. • Connect the driver and passenger-side curtain air bag module connectors. • Connect the driver and passenger-side front seat connectors. • Connect the passenger-side air bag module connector. • Connect the clock spring connector. • Connect the negative battery cable. • Switch the ignition to 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.
5		No	Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.