DTC B0094:11, B0094:13, B0094:87 OR B0094:96 [SAS CONTROL MODULE]

id0802g6009300

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

Outline

System malfunction location

B0094:11: Crash zone sensor (center) circuit short to body ground or power supply

B0094:13: Crash zone sensor (center) circuit open circuit or short to power supply

B0094:87: Signal reception error from crash zone sensor (center)

B0094:96: Crash zone sensor (center) internal malfunction
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.
•  Wiring harness between the crash zone sensor (center) and SAS control module has a malfunction
•  Crash zone sensor (center) has a malfunction
Fail-safe
•  Not applicable
Possible cause
•  Crash zone sensor (center) connector malfunction
•  Open circuit in crash zone sensor (center) signal circuit
•  Short circuit to body ground in crash zone sensor (center) signal circuit
•  Short circuit to power supply in crash zone sensor (center) signal circuit
•  Crash zone sensor (center) malfunction
•  SAS control module malfunction

Diagnostic Procedure

Step

Inspection

Results

Action
1
INSPECT CRASH ZONE SENSOR (CENTER) 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.
•  Switch the ignition off.
•  Disconnect the negative battery terminal and wait for 1 min or more.
•  Disconnect the crash zone sensor (center) connector.
•  Inspect the crash zone sensor (center) connector (both sides of connector). (Corrosion, damage, and disconnected pins)
•  Is there any malfunction of the crash zone sensor (center) connector (wiring harness-side)?
Yes
Replace the malfunctioning part and perform the repair completion verification.
No
Go to the next step.
2
INSPECT CRASH ZONE SENSOR (CENTER) SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Disconnect the driver and passenger-side knee air bag module connectors.
•  Disconnect the clock spring connectors.
•  Disconnect the passenger-side air bag module connectors.
•  Disconnect the driver and passenger-side front seat connectors.
•  Disconnect the driver and passenger-side curtain air bag module connectors.
•  Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
•  Disconnect the all SAS control module connectors.
•  Inspect the crash zone sensor (center) signal circuit for a short to ground.
Note
•  Inspect for a short to ground while shaking the wiring harness between the SAS control module and crash zone sensor (center).
•  Is the circuit normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
3
INSPECT CRASH ZONE SENSOR (BUMPER) SIGNAL CIRCUIT FOR OPEN CIRCUIT
•  Crash zone sensor (center) and SAS control module connectors are disconnected.
•  Inspect the crash zone sensor (center) signal circuit for open circuit.
Note
•  Inspect for open circuit while shaking the wiring harness between the SAS control module and crash zone sensor (center).
•  Is the circuit normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
4
INSPECT CRASH ZONE SENSOR (CENTER) SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Crash zone sensor (center) and SAS control module connectors are disconnected.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off or on).
•  Inspect the crash zone sensor (center) signal circuit for a short to power supply.
Note
•  Inspect for a short to power supply while shaking the wiring harness between the SAS control module and crash zone (center).
•  Is the circuit normal?
Yes
Replace the crash zone sensor (center) and the repair completion verification.
(See CRASH ZONE SENSOR REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].)
(See CRASH ZONE SENSOR REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
No
Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification
PERFORM SAS CONTROL MODULE DTC INSPECTION
•  Switch the ignition off.
•  Disconnect the negative battery terminal and wait for 1 min or more.
•  Connect the SAS control module connectors.
•  Reconnect all disconnected connectors.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off or on).
•  Clear the DTC for the SAS control module using the M-MDS.
•  Perform the DTC inspection for the SAS control module using the M-MDS.
•  Are the same Pending DTCs present?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)
If the CAN communication is normal, perform the diagnosis from Step 1.
•  If the malfunction recurs, replace the SAS control module.
No
DTC troubleshooting completed.