DTC U3003:16/U3003:17 [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)]

id0802g8823200

System malfunction location	•  U3003:16: SAS control module power supply voltage decreases (8 V or less) •  U3003:17: SAS control module power supply voltage increases (16 V or more)
Detection condition	Warning •  Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure. •  SAS control module power supply voltage is other than 8.1–15.9 V
Fail-safe function	Not applicable
Possible cause	•  DTCs are stored in the PCM. •  DTCs are stored in the DC-DC converter (i-ELOOP). ―  DC-DC converter (i-ELOOP) connector or terminal malfunction ―  DC-DC converter (i-ELOOP) malfunction •  Battery malfunction •  Generator system malfunction •  SAS control module connector malfunction •  SAS control module power supply circuit malfunction Without i-ELOOP: ―  Short to ground in the wiring harness between MAIN 200 A fuse and SAS control module terminal 2AD ―  SRS1 7.5 A fuse malfunction ―  MAIN 200 A fuse malfunction ―  IG1 relay malfunction ―  Open circuit in the wiring harness between battery positive terminal and SAS control module terminal 2AD With i-ELOOP: ―  Short to ground in the wiring harness between SRS1 7.5 A fuse and SAS control module terminal 2AD ―  SRS1 7.5 A fuse malfunction ―  IG1 relay malfunction ―  Open circuit in the wiring harness between DC-DC converter (i-ELOOP) terminal 4A and SAS control module terminal 2AD •  SAS control module body ground circuit malfunction ―  Open circuit in wiring harness between SAS control module terminal 2X and body ground ―  Open circuit in wiring harness between SAS control module terminal 2AB and body ground •  SAS control module malfunction

Diagnostic procedure

Step	Inspection		Action
1	INSPECT IG1 RELAY •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Remove the IG1 relay. (See RELAY LOCATION.) •  Inspect the IG1 relay. (See RELAY INSPECTION.) •  Is the IG1 relay normal?	Yes	Go to the next step.
		No	Replace the IG1relay, then go to Step 10.
2	INSPECT PCM DTC •  Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 1.5)].) •  Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See DTC TABLE [PCM (SKYACTIV-D 1.5)].)
		No	Without i-ELOOP: •  Go to Step 4. With i-ELOOP: •  Go to the next step.
3	INSPECT DC-DC CONVERTER (i-ELOOP) DTC •  Perform the DC-DC converter (i-ELOOP) DTC inspection using the M-MDS. (See DTC INSPECTION [i-ELOOP].) •  Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [i-ELOOP].)
		No	Go to the next step.
4	INSPECT BATTERY •  Inspect the battery. (See BATTERY INSPECTION.) •  Is the battery normal?	Yes	Go to the next step.
		No	Replace or charge the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 1.3, SKYACTIV-G 1.5].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.5].) (See BATTERY RECHARGING.) Then go to Step 10.
5	INSPECT GENERATOR •  Inspect the generator. (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-D 1.5)].) (See GENERATOR INSPECTION [WITH i-ELOOP (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See GENERATOR INSPECTION [WITH i-ELOOP (SKYACTIV-D 1.5)].) •  Is the generator normal?	Yes	Go to the next step.
		No	Replace the generator. (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See GENERATOR REMOVAL/INSTALLATION [WITHOUT i-ELOOP (SKYACTIV-D 1.5)].) (See GENERATOR REMOVAL/INSTALLATION [WITH i-ELOOP (SKYACTIV-G 1.3, SKYACTIV-G 1.5)].) (See GENERATOR REMOVAL/INSTALLATION [WITH i-ELOOP (SKYACTIV-D 1.5)].) Then go to the Step 10.
6	VERIFY SAS CONTROL MODULE CONNECTOR CONDITION Warning •  Handling the component parts improperly can accidentally operate (deploy) the air bag modules, pre-tensioner seat belts and lap pre-tensioner seat belts, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Switch the ignition off. •  Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.) •  Disconnect the clock spring connector. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.) •  Disconnect the passenger-side air bag module connector. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Disconnect the driver and passenger-side front seat connectors. (See FRONT SEAT REMOVAL/INSTALLATION.) •  Remove the B-pillar lower trim. (See B-PILLAR UPPER TRIM REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side front pre-tensioner seat belt connectors. (See FRONT SEAT BELT REMOVAL/INSTALLATION.) •  Remove the trunk side trim. (with rear pre-tensioner seat belt) (See TRUNK SIDE TRIM REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side rear pre-tensioner seat belt connectors. (with rear pre-tensioner seat belt) (See REAR SEAT BELT REMOVAL/INSTALLATION.) •  Remove the headliner. (See HEADLINER REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side curtain air bag module connectors. (See CURTAIN AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Disconnect the all SAS control module connectors. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Inspect the connector and terminals (corrosion, damage, pin disconnection). •  Are the connector and terminals normal?	Yes	Without i-ELOOP: •  Go to the next step. With i-ELOOP: •  Go to Step 8.
		No	Replace the air bag harness. After repair procedure, go to Step 10.
7	INSPECT SAS CONTROL MODULE POWER SUPPLY VOLTAGE •  SAS control module connectors are disconnected. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Switch the ignition on (engine off or on). •  Measure the voltage at the following terminal (wiring harness-side): ―  SAS control module terminal 2AD •  Is the voltage 8.1—15.9?	Yes	Go to Step 9.
		No	Inspect the SRS1 7.5 A fuse and MAIN 200 A fuse. •  If the fuse is blown: ―  Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and SAS control module terminal 2AD. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has a short to ground. ―  Replace the fuse. •  If the fuse is damaged: ―  Replace the fuse. •  If the fuse is normal: ―  Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and SAS control module terminal 2AD. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 10.
8	INSPECT SAS CONTROL MODULE POWER SUPPLY VOLTAGE •  SAS control module connector is disconnected. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Switch the ignition on (engine off or on). •  Measure the voltage at the following terminal (wiring harness-side): ―  SAS control module terminal 2AD •  Is the voltage 8.1—15.9?	Yes	Go to the next step.
		No	Disconnect the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) Inspect the SRS1 7.5 A fuse. •  If the fuse is blown: ―  Refer to the wiring diagram and verify whether or not there is a common connector between SRS1 7.5 A fuse and SAS control module terminal 2AD. If there is a common connector: •  Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for a short to ground. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which is shorted to ground, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness. ―  Replace the fuse. •  If the fuse is damaged: ―  Replace the fuse. •  If the fuse is normal: ―  Refer to the wiring diagram and verify whether or not there is a common connector between DC-DC converter (i-ELOOP) terminal 4A and SAS control module terminal 2AD. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Connect the service plug, then go to Step 10. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].)
9	INSPECT SAS CONTROL MODULE BODY GROUND CIRCUIT FOR OPEN CIRCUIT •  SAS control module connectors are disconnected. •  Switch the ignition off. •  Disconnect the negative battery cable and wait 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Inspect for continuity between the following terminals (wiring harness-side) and body ground: ―  SAS control module terminal 2X ―  SAS control module terminal 2AB Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and body ground. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and body ground. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Replace the malfunctioning part. If there is no common connector: •  Replace the wiring harness which has an open circuit. Go to the next step.
10	PERFORM SAS CONTROL MODULE DTC INSPECTION •  Connect the SAS control module connectors. •  Reconnect all disconnected connectors. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off or on). •  Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].) •  Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].) •  Are the same DTCs present?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
		No	DTC troubleshooting completed.