System malfunction location

• B00A0:81:Invalid signal to SAS control module

• B00A0:87:Error signal from seat weight sensor control module

• B00A0:8F:Seat weight sensor communication error

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 seat weight sensor control module

Fail-safe

Not applicable

Possible cause

• Seat weight sensor connector malfunction

• Short circuit to power supply or body ground in the wiring harness between the SAS control module and seat weight sensor control module

• Open circuit in the wiring harness between the SAS control module and seat weight sensor control module

• Seat weight sensor control module malfunction

• SAS control module malfunction

Step

Inspection

Action

1

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 [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Switch the ignition off.

• Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the seat weight sensor control module connector. (See SEAT WEIGHT SENSOR CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Is there any malfunction of the seat weight sensor control module connector or seat connector?

Yes

Replace the malfunctioning part, then go to Step 5.

No

Go to the next step.

2

• Seat weight sensor control module and fuse block connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side):

• SAS control module connector terminal 2B

NOTE:

• Inspect for continuity while shaking the wiring harness between the SAS control module and seat weight sensor control module.

• 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 weight sensor control module 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 5.

No

Go to the next step.

3

• Seat weight sensor control module and fuse block connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side):

• Seat weight sensor control module terminal 2C—SAS control module connector terminal 2B

NOTE:

• Inspect for continuity while shaking the wiring harness between the SAS control module and seat weight sensor control module.

• 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 weight sensor control module 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 5.

4

• Seat weight sensor control module and fuse block connectors are disconnected.

• Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Switch the ignition ON (engine off or on).

• Measure the voltage at the following terminals (wiring harness-side):

• SAS control module connector terminal 2B

NOTE:

• Measure the voltage while shaking the wiring harness between the SAS control module and seat weight sensor control module.

• 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 seat weight sensor control module 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.

5

• Reconnect the disconnected connectors.

• Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Switch the ignition ON (engine off or on).

• Clear the DTC for the SAS control module using the M-MDS. (See CLEARING DTC [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Perform the DTC inspection for the SAS control module using the M-MDS. (See DTC INSPECTION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Are DTCs B00A0:81, B00A0:87 and/or B00A0:8F displayed?

Yes

Replace the seat weight sensor control module.

(See SEAT WEIGHT SENSOR CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

Then go to the next step.

No

DTC troubleshooting completed.

6

• Clear DTCs using the M-MDS. (See CLEARING DTC [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Verify DTCs using the M-MDS. (See DTC INSPECTION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

• Are DTCs B00A0:81, B00A0:87 and/or B00A0:8F displayed?

Yes

Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)

No

DTC troubleshooting completed.