NO.2 AIR BAG SYSTEM WARNING LIGHT ILLUMINATES CONSTANTLY

id080300800300

2	Air bag system warning light is illuminated constantly and remains illuminated after 6 s have elapsed.
DETECTION CONDITION	Malfunction in air bag system warning light circuit (open circuit or short to power supply).
POSSIBLE CAUSE	•  Weak battery •  SAS control module malfunction •  Instrument cluster (circuit board) malfunction •  No connection in SAS control module connector •  Poor contact in instrument cluster connector (24-pin) •  Open or short to power supply circuit in wiring harness between instrument cluster and SAS control module •  Poor contact at terminals 3X and/or 3C of SAS control module connector •  Poor contact in wiring harness between terminal 3X of SAS control module connector and ground •  Poor contact in wiring harness between battery and terminal 3C of SAS control module

System Wiring Diagram

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Diagnostic Procedure

STEP	INSPECTION		ACTION
1	INSPECT BATTERY •  Measure the voltage of battery. •  Is the voltage 8 V or more?	Yes	Go to the next step.
		No	Battery is weak. Inspect charge/discharge system, then go to Step 9. (See BATTERY INSPECTION [MZR 1.5, MZR 1.6].) (See BATTERY INSPECTION [MZR 2.0, MZR 2.5].) (See BATTERY INSPECTION [MZR 2.0 DISI i-stop].) (See BATTERY INSPECTION [MZR 2.3 DISI Turbo].) (See BATTERY INSPECTION [SKYACTIV-G 2.0].) (See BATTERY INSPECTION [MZ-CD 1.6].) (See BATTERY INSPECTION [MZR-CD 2.2].)
2	VERIFY THAT SAS CONTROL MODULE CONNECTOR IS CONNECTED Warning •  Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the air bag system service warnings and cautions before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS.) (See AIR BAG SYSTEM SERVICE CAUTIONS.) •  Switch the ignition to off. •  Disconnect the negative battery cable and wait for 1 min or more. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) •  Remove the console. (See CONSOLE REMOVAL/INSTALLATION.) •  Are all SAS control module connectors securely connected?	Yes	Go to the next step.
		No	Reconnect the connector properly, then go to Step 9.
3	INSPECT DTCS IN SAS CONTROL MODULE •  Clear DTCs using the M-MDS. (See CLEARING DTC.) •  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 9. (See DTC TABLE.)
		No	Go to the next step.
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 Step 9. (See DTC TABLE [INSTRUMENT CLUSTER].)
		No	Go to the next step.
5	VERIFY WHERE MALFUNCTION IS IN WARNING LIGHTS INDICATION CIRCUIT OR ELSEWHERE •  Turn off 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 warning and indicator lights turn off?	Yes	Go to the next step.
		No	Repair the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Then go to Step 9.
6	INSPECT POWER SUPPLY CIRCUIT OF SAS CONTROL MODULE (TERMINAL 3C) •  Switch the ignition to off. •  Disconnect the negative battery cable and wait for 1 min or more. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) •  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. •  Inspect the voltage for PID/DATA monitor VPWR item using M-MDS. •  Is the voltage of at least one terminal 8 V—16 V?	Yes	Go to Step 8.
		No	Go to the next step.
7	INSPECT WIRING HARNESS BETWEEN BATTERY AND FUSE BLOCK •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) •  Switch the ignition to ON. •  Measure the voltage at instrument cluster connector terminal 2S. •  Is the voltage 8 V—16 V?	Yes	Go to the next step.
		No	Repair the wiring harnesses, then go to Step 9.
8	VERIFY THAT SAS CONTROL MODULE CONNECTOR TERMINAL 3X IS GROUND •  Switch the ignition to off. •  Disconnect the negative battery cable and wait for 1 min or more. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) •  Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.) •  Disconnect the clock spring connector. •  Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.) •  Disconnect the passenger-side air bag module connector. •  Disconnect the driver and passenger-side side air bag module connectors. •  Remove the C-pillar trims. (See C-PILLAR TRIM REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side curtain air bag module connectors. •  Remove the B-pillar lower trims. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side pre-tensioner seat belt connectors. •  Disconnect the lap pre-tensioner seat belt connector. •  Remove the console. (See CONSOLE REMOVAL/INSTALLATION.) •  Disconnect all SAS control module connectors. •  Inspect the wiring harness between SAS control module connector terminal 3X and ground for the following: ―  Short to power supply ―  Open circuit •  Is the wiring harness normal?	Yes	Replace the SAS control module, then go to the next step. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Replace the wiring harnesses, then go to the next step.
9	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 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 instrument cluster connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) •  Switch the ignition to ON. •  Does the air bag system warning light illuminate for approx. 6 s and turn off?	Yes	Complete troubleshooting, then explain repairs to customer.
		No	Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.