DTC B1318

id080200810000

System Malfunction Location

• SAS control module power supply voltage decreases (less than 9 V)

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.

• When the SAS control module power supply voltage less than 9 V.

Possible Cause

• Open or short circuit in wiring harness between battery and SAS control module

• ENG 10 A fuse malfunction

• Battery malfunction

• SAS control module malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT FUSE • Remove the ENG 10 A fuse. • Is the fuse normal?	Yes	Install the fuse, then go to the next step.
1		No	Replace the fuse.
2	INSPECT BATTERY • Measure the battery positive voltage. • Is the voltage less than 9 V?	Yes	Battery is malfunctioning Inspect the charge/discharge system.
2		No	Go to the next step.
3	INSPECT WIRING HARNESS BETWEEN BATTERY AND CJB • Turn the ignition switch to the ON position. • Measure the CJB J-06 connector H terminal voltage. Note • Measure the voltage while shaking the wiring harness between the battery and CJB. • Is the voltage less than 9 V?	Yes	Repair the wiring harness between the battery and CJB.
3		No	Install the fuse, then go to the next step.
4	INSPECT WIRING HARNESS BETWEEN CJB AND SAS CONTROL MODULE 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 service warnings before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS.) (See AIR BAG SYSTEM SERVICE CAUTIONS.) • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable and wait for 1 min or more. • Disconnect the SAS control module connector. • Turn the ignition switch to the ON position. • Measure the SAS control module terminal 2V voltage. Note • Measure the voltage while shaking the wiring harness between the CJB and SAS control module. • Is the voltage less than 9 V?	Yes	Replace the wiring harness between the CJB and SAS control module.
4		No	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)