DTC B00B5:11/B00B5:12/B00B5:13/B00B5:1D [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)]


id0802g8000500

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

•  B00B5:11:Seat track position sensor circuit short to body ground
•  B00B5:12:Seat track position sensor circuit short to power supply
•  B00B5:13:Seat track position sensor circuit open
•  B00B5:1D:Seat track position sensor circuit current out of range
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.
•  Seat track position sensor has a malfunction
•  Wiring harness between the seat track position sensor and SAS control module has a malfunction
Fail-safe function
Not applicable
Possible cause
•  Open circuit in the wiring harness between the following terminals:
―  SAS control module terminal 2AB—seat track position sensor terminal A
―  SAS control module terminal 2X—seat track position sensor terminal B
•  Short circuit to body ground in the wiring harness between the following terminals:
―  SAS control module terminal 2AB—seat track position sensor terminal A
―  SAS control module terminal 2X—seat track position sensor terminal B
•  Short circuit to power supply in the wiring harness between the following terminals:
―  SAS control module terminal 2AB—seat track position sensor terminal A
―  SAS control module terminal 2X—seat track position sensor terminal B
•  Short circuit to other air bag sensor circuits in the wiring harness between the seat track position sensor and SAS control module
•  Seat track position sensor malfunction
•  SAS control module malfunction


Diagnostic Procedure

Step

Inspection

Action

1
INSPECT SEAT TRACK POSITION SENSOR CIRCUIT
•  Check the following PID/DATA monitor, using M-MDS. (See PID/DATA MONITOR TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)].)
―  D_SP_S_FLT
•  Is seat track position sensor circuit normal?
Yes
Replace the SAS control module.
No
Go to the next step.
2
INSPECT SEAT TRACK POSITION SENSOR 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 to off.
•  Disconnect the negative battery terminal and wait for 1 min or more.
•  Disconnect the seat track position sensor connector.
•  Inspect the seat track position sensor connection. (Corrosion, damage, and disconnected pins)
•  Is there any malfunction of the seat track position sensor connector?
Yes
Replace the malfunctioning part.
No
Go to the next step.
3
INSPECT SEAT TRACK POSITION SENSOR CIRCUIT FOR SHORT TO GROUND
•  Remove the column cover.
•  Disconnect the clock spring connector.
•  Remove the glove compartment.
•  Disconnect the passenger-side air bag module connector.
•  Disconnect the driver and passenger-side front seat connectors.
•  Remove the B-pillar lower trim.
•  Disconnect the driver and passenger-side front pre-tensioner seat belt connectors.
•  Remove the trunk side trim.
•  Disconnect the driver and passenger-side rear pre-tensioner seat belt connectors.
•  Remove the headliner.
•  Disconnect the driver and passenger-side curtain air bag module connectors.
•  Disconnect the active bonnet actuator connector.
•  Disconnect the all SAS control module connectors.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  SAS control module terminal 2AB
―  SAS control module terminal 2X
Note
•  Inspect for continuity while shaking the wiring harness between the SAS control module and seat track position sensor.
•  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 seat track position sensor 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 7.
No
Go to the next step.
4
INSPECT SEAT TRACK POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Seat track position sensor and SAS control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Seat track position sensor terminal A—SAS control module terminal 2AB
―  Seat track position sensor terminal B—SAS control module terminal 2X
Note
•  Inspect for continuity while shaking the wiring harness between the SAS control module and seat track position sensor.
•  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 seat track position sensor 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 7.
5
INSPECT SEAT TRACK POSITION SENSOR CIRCUIT FOR SHORT TO OTHER AIR BAG SENSOR CIRCUIT
•  Seat track position sensor and SAS control module connectors are disconnected.
•  Remove the front bumper.
•  Disconnect the crash zone sensor connector.
•  Remove the driver-side and passenger-side B-pillar lower trim.
•  Disconnect the driver-side and passenger-side side air bag sensor connectors.
•  Remove the driver-side and passenger-side front door trim.
•  Disconnect the driver-side and passenger-side pressure sensor connectors.
•  Refer to the wiring diagram and inspect for continuity between the seat track position sensor terminals and other air bag sensor terminals (wiring harness-side).
Note
•  Inspect for continuity while shaking the wiring harness between the SAS control module and seat track position sensor.
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between seat track position sensor terminal and other air bag sensor 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 sensor circuit.
•  Replace the malfunctioning part.
If there is no common connector:
•  Replace the wiring harness which has a short to other air bag sensor circuit.
Go to Step 7.
No
Go to the next step.
6
INSPECT SEAT TRACK POSITION SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
•  Seat track position sensor and SAS control module connectors are disconnected.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off or on).
•  Measure the voltage at the following terminals (wiring harness-side):
―  SAS control module terminal 2AB
―  SAS control module terminal 2X
Note
•  Measure the voltage while shaking the wiring harness between the SAS control module and seat track position sensor.
•  Is the voltage 0 V?
Yes
Replace the seat track position sensor, then 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 seat track position sensor 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 the next step.
7
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
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the SAS control module.
No
DTC troubleshooting completed.