DTC B0001:11/B0001:12/B0001:13/B0001:19/B0001:1A [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)]

id0802g7820100

Note

•  The SRS air bag system can be identified by whether or not the seat track position sensor is present.

―  Standard deployment control system: Without seat track position sensor

―  Two-step deployment control system: With seat track position sensor

System malfunction location	•  B0001:11: Driver-side air bag module circuit short to body ground •  B0001:12: Driver-side air bag module circuit short to power supply •  B0001:13: Driver-side air bag module circuit open circuit or resistance high •  B0001:19: Short circuit to driver-side air bag module and other air bag module circuits •  B0001:1A: Driver-side air bag module circuit resistance low
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. •  Resistance other than 0.99–6.42 ohms detected in driver-side air bag module circuit •  Wiring harness between driver-side air bag module and SAS control module has malfunction
Fail-safe	Not applicable
Possible cause	•  Clock spring connector malfunction •  Clock spring malfunction •  Open circuit in the wiring harness between the following terminals: ―  Clock spring terminal 6A—Clock spring terminal 2B ―  Clock spring terminal 6B—Clock spring terminal 2A ―  SAS control module terminal 3U—Clock spring terminal 2B ―  SAS control module terminal 3W—Clock spring terminal 2A •  Short circuit to body ground in the wiring harness between the following terminals: ―  SAS control module terminal 3U—Clock spring terminal 2B ―  SAS control module terminal 3W—Clock spring terminal 2A •  Short circuit to power supply in the wiring harness between the following terminals: ―  SAS control module terminal 3U—Clock spring terminal 2B ―  SAS control module terminal 3W—Clock spring terminal 2A •  Short circuit to each other in the wiring harness between the clock spring and SAS control module •  Short circuit to other air bag module or active bonnet actuator circuits in the wiring harness between the clock spring and SAS control module •  Driver-side air bag module malfunction •  Driver-side air bag module connector malfunction •  SAS control module malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT DRIVER-SIDE AIR BAG MODULE CONNECTOR Warning •  Handling the component parts improperly can accidentally operate (deploy) the air bag module, 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 [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See ACTIVE BONNET SERVICE WARNINGS.) (See ACTIVE BONNET SERVICE CAUTIONS.) •  Switch the ignition off. •  Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the driver-side air bag module connector. (See DRIVER-SIDE AIR BAG MODULE REMOVAL [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) •  Inspect the clock spring connector. (Corrosion, damage, and disconnected pins) •  Is there any malfunction of the clock spring connector?	Yes	Replace clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) Then go to Step 10.
		No	Go to the next step.
2	INSPECT CLOCK SPRING •  Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.) •  Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.) •  Remove the clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) •  Inspect for continuity between the following terminals: ―  Clock spring terminal 6A—Clock spring terminal 2B ―  Clock spring terminal 6B—Clock spring terminal 2A Note •  Inspect the clock spring wiring harness for continuity while shaking it. •  Is there continuity?	Yes	Go to the next step.
		No	Replace clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) Then go to Step 10.
3	INSPECT CLOCK SPRING CIRCUIT FOR SHORT TO EACH OTHER •  Clock spring connectors are disconnected. •  Switch the ignition off. •  Refer to the wiring diagram and inspect for continuity between the following terminals and other clock spring terminals (1A—1N, 4A—4D). ―  Clock spring terminal 2A ―  Clock spring terminal 2B Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. •  Is there continuity?	Yes	Replace clock spring. (See CLOCK SPRING REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) Then go to Step 10.
		No	Go to the next step.
4	INSPECT DRIVER-SIDE AIR BAG MODULE CIRCUIT FOR SHORT TO GROUND •  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 [STANDARD DEPLOYMENT CONTROL SYSTEM].) •  Disconnect the driver and passenger-side front seat connectors. (See FRONT SEAT 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 [STANDARD DEPLOYMENT CONTROL SYSTEM].) •  Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.) •  Disconnect the driver and passenger-side pre-tensioner seat belt connectors. (See FRONT SEAT BELT REMOVAL/INSTALLATION.) •  Remove the rear console. (See REAR CONSOLE REMOVAL/INSTALLATION.) •  Disconnect the active bonnet actuator connector. (See ACTIVE BONNET ACTUATOR REMOVAL/INSTALLATION.) •  Disconnect the all SAS control module connectors. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) •  Inspect for continuity between the following terminals (wiring harness-side) and body ground: ―  SAS control module terminal 3U ―  SAS control module terminal 3W Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. •  Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and clock spring terminal. 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. •  Replace the malfunctioning part. If there is no common connector: •  Replace the wiring harness which has a short to ground. Go to Step 10.
		No	Go to the next step.
5	INSPECT DRIVER-SIDE AIR BAG MODULE CIRCUIT FOR OPEN CIRCUIT •  SAS control module and clock spring connectors are disconnected. •  Inspect for continuity between the following terminals (wiring harness-side): ―  Clock spring terminal 2B—SAS control module terminal 3U ―  Clock spring terminal 2A—SAS control module terminal 3W Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. •  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 clock spring terminal. 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 Step 10.
6	INSPECT DRIVER-SIDE AIR BAG MODULE CIRCUIT FOR SHORT TO EACH OTHER •  SAS control module and clock spring connectors are disconnected. •  Inspect for continuity between the following terminals (wiring harness-side): ―  SAS control module terminal 3U—SAS control module terminal 3W Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. •  Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and clock spring terminal. 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 each other. •  Replace the malfunctioning part. If there is no common connector: •  Replace the wiring harness which has a short to each other. Go to Step 10.
		No	Go to the next step.
7	INSPECT DRIVER-SIDE AIR BAG MODULE CIRCUIT FOR SHORT TO OTHER AIR BAG MODULE OR ACTIVE BONNET ACTUATOR CIRCUIT •  SAS control module and clock spring connectors are disconnected. •  Other air bag module, active bonnet actuator and pre-tensioner seat belt connectors are disconnected. •  Refer to the wiring diagram and inspect for continuity between the following terminals and other air bag module / active bonnet actuator / pre-tensioner seat belt terminals (wiring harness-side). ―  SAS control module terminal 3U ―  SAS control module terminal 3W Note •  Inspect for continuity while shaking the wiring harness between the SAS control module and clock spring. •  Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and clock spring terminal. 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 other air bag module or active bonnet actuator or pre-tensioner seat belt circuit. •  Replace the malfunctioning part. If there is no common connector: •  Replace the wiring harness which has a short to other air bag module or active bonnet actuator or pre-tensioner seat belt circuit. Go to Step 10.
		No	Go to the next step.
8	INSPECT DRIVER-SIDE AIR BAG MODULE CIRCUIT FOR SHORT TO POWER SUPPLY •  SAS control module and clock spring connectors are disconnected. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off or on). •  Measure the voltage at the following terminals (wiring harness-side): ―  SAS control module terminal 3U ―  SAS control module terminal 3W Note •  Measure the voltage while shaking the wiring harness between the SAS control module and clock spring. •  Is the voltage 0 V?	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 clock spring terminal. 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 power supply. •  Replace the malfunctioning part. If there is no common connector: •  Replace the wiring harness which has a short to power supply. Go to Step 10.
9	INSPECT DRIVER-SIDE AIR BAG MODULE •  Switch the ignition off. •  Disconnect the negative battery terminal and wait for 1 min or more. •  Connect the SAS control module connectors. •  Except for the driver-side air bag module connector, reconnect all disconnected connectors. •  Apply 2 ohms resistance to clock spring connector terminals 6A and 6B. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL 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 (STANDARD DEPLOYMENT CONTROL SYSTEM)].) •  Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].) •  Are the same Pending DTCs present?	Yes	Go to the next step.
		No	Replace the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].) Then go to the next step.
10	PERFORM SAS CONTROL MODULE DTC INSPECTION •  Switch the ignition off. •  Disconnect the negative battery terminal and wait for 1 min or more. •  Disconnect the 2 ohms resistance. •  Connect the driver-side air bag module connector. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL 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 (STANDARD DEPLOYMENT CONTROL SYSTEM)].) •  Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)].) •  Are the same Pending DTCs present?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].)
		No	DTC troubleshooting completed.