DTC B00A0:81/B00A0:87 [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)]

id0802g8833600

System malfunction location	•  B00A0:81:Occupant classification sensor memory check sum error •  B00A0:87:Signal reception error from occupant classification sensor
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. •  Error signal is detected between SAS control module and occupant classification sensor •  The SAS control module could not receive CAN signal from the occupant classification sensor for 1 s or more.
Fail-safe	Not applicable
Possible cause	•  Occupant classification sensor connector malfunction •  Malfunction in CAN line between the SAS control module and occupant classification sensor •  SAS control module malfunction

Diagnostic Procedure

Warning

•  Handling the component parts improperly can accidentally operate (deploy) the air bag modules, pre-tensioner seat belts and active bonnet actuators 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].) (See ACTIVE BONNET SERVICE WARNINGS.) (See ACTIVE BONNET SERVICE CAUTIONS.)

Step	Inspection		Action
1	INSPECT OCCUPANT CLASSIFICATION SENSOR CONNECTOR •  Switch the ignition off. •  Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the occupant classification sensor connector. (See FRONT SEAT REMOVAL/INSTALLATION.) •  Is there any malfunction of the occupant classification sensor connector or passenger-side front seat connector?	Yes	Replace the malfunctioning part, then go to Step 4.
		No	Go to the next step.
2	INSPECT OCCUPANT CLASSIFICATION SENSOR •  Inspect the occupant classification sensor. (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) •  Is the voltage of each terminal normal?	Yes	CAN communication line can be considered the cause. Perform the malfunction diagnosis according to the troubleshooting procedure for multiplex communication system. (See FOREWORD [L.H.D.].)(See FOREWORD [R.H.D.].) Then go to the next step.
		No	Repair or replace the wiring harness or connector, then go to the next step.
3	PERFORM SAS CONTROL MODULE DTC INSPECTION •  Reconnect the disconnected connectors. •  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 (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 displayed?	Yes	Replace the occupant classification sensor. (See FRONT SEAT REMOVAL/INSTALLATION.) Then go to the next step.
		No	DTC troubleshooting completed.
4	VERIFY TROUBLESHOOTING COMPLETED •  Clear DTCs using the M-MDS. (See CLEARING DTC [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].) •  Verify DTCs using the M-MDS. (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].) •  Are the same DTCs displayed?	Yes	Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
		No	DTC troubleshooting completed.