PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK WARNING LIGHT. Check whether the airbag warning light in the combination meter is lit. | Does the airbag warning light illuminate? | Go to step 2 . | Perform the diagnosis according to phenomenon of the problem. |
| 2 READ DTC. Turn the ignition switch to OFF. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON and run the Subaru Select Monitor. Read the DTC. Refer to OPERATION . NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Refer to COMMUNICATION FOR INITIALIZING THE AIRBAG SYSTEM IS IMPOSSIBLE . Record all DTCs and freeze frame data. | Is DTC displayed? | Go to step 3 . | Go to "Airbag Warning Light Failure" Refer to AIRBAG WARNING LIGHT FAILURE . |
| 3 PERFORM DIAGNOSIS. Determine the possible cause from "List of Diagnostic Trouble Code (DTC)" Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . Inspect the DTC using "List of Diagnostic Trouble Code (DTC)". Repair the trouble cause. Perform the Clear Memory Mode. Refer to CLEAR MEMORY MODE . Perform the Inspection Mode. Refer to INSPECTION MODE . Read any other DTCs displayed. | Is DTC displayed? | Perform the procedure 1) to 5) in step 3. | Finish the diagnosis. |
| NOTE |
|---|
| If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Refer to COMMUNICATION FOR INITIALIZING THE AIRBAG SYSTEM IS IMPOSSIBLE . |
Scheme 209
CAUTION
- If the seat cushion cover is removed or replaced, make sure to perform the occupant detection system adjustment after installing the seat to the vehicle. Refer to «SYSTEM CALIBRATION (REZEROING)»(ref-565210-S02979071592013071000000) . Failure to do so may cause improper operation of the occupant detection system.
- The occupant detection system (passenger seat only) control module and the occupant detection sensor are fixed to the seat cushion frame. Never remove the occupant detection control module or the occupant detection sensor from the seat cushion frame.
- Do not replace the seat cushion pad by itself. Always replace the seat cushion pad & frame assembly as a set. The seat cushion pad and cushion frame are adjusted as a set at the time of manufacture. If cushion pads and cushion frames are combined from those of other vehicles or other sets, the occupant detection system may not operate properly.
- If the seat cushion cover is removed, make sure to replace the hang wire on the seat cushion cover side with a new wire.
- Never connect the battery in reverse polarity. Occupant detection system may be destroyed instantly.
- Do not disconnect the battery terminals while the engine is running. A large counter electromotive force will be generated in the generator, and this voltage may damage electronic parts such as occupant detection control module.
- Before disconnecting the connectors of each sensor and control module, be sure to turn the ignition switch to OFF and wait for 60 seconds or more. Occupant detection control module may be damaged.
- Every occupant detection system-related part is a precision part. Do not drop them. CAUTION: Do not use electrical test devices on airbag system wiring harnesses or connector circuits. Be careful not to damage the airbag system wiring harness, when servicing the occupant detection system. Refer to «CAUTION»(ref-565203-S06105343772013071000000) when repairing occupant detection system.
PREPARATION TOOL
| CAUTION | To measure the voltage and resistance of airbag system and occupant detection system components, be sure to use the specified test harness. |
GENERAL TOOL
| TOOL NAME | REMARKS |
|---|---|
| Circuit tester | Used for measuring resistance, voltage and current. |
Scheme 210
Scheme 211
- How to disconnect: Push the lock arm (A), and disconnect the connector. CAUTION: When pulling the slide lock or disconnecting connector, be sure to hold the connector, not the harness.
- How to connect: Holding the connector, push it in securely until a clicking sound is heard. CAUTION: Be sure to insert the connector in until it is locked. Then pull it gently to make sure that it is locked.
AIRBAG CONTROL MODULE
Refer to AIRBAG CONTROL MODULE .
BUCKLE SWITCH RH
Refer to BUCKLE SWITCH RH .
COMMUNICATION FOR INITIALIZING THE AIRBAG SYSTEM IS IMPOSSIBLE
Note. The occupant detection system communicates with the Subaru Select Monitor via the airbag control module.
DETECTING CONDITION
Defective harness connector
COMMUNICATION FOR INITIALIZING ONLY THE OCCUPANT DETECTION SYSTEM IS IMPOSSIBLE
Note. The occupant detection system communicates with the Subaru Select Monitor via the airbag control module.
Defective harness connector between airbag control module and occupant detection control module
Recreate the circumstance by referring to the conditions described in the checklist.
LIST
| DTC | Item | Content of diagnosis | Reference |
|---|---|---|---|
| B1650 | Occupant Classification System Malfunction | Occupant detection sensor is faulty. Occupant detection control module is faulty. Occupant detection harness is faulty. Fuse is blown. | Refer to DTC B1650 OCCUPANT CLASSIFICATION SYSTEM MALFUNCTION . |
| B1655 | Front Buckle Switch RH Failure | Passenger's buckle switch circuit is open, shorted or shorted to ground. Occupant detection system is faulty. Occupant detection harness is faulty. | Refer to DTC B1655 FRONT BUCKLE SWITCH RH FAILURE . |
| B16EE | Occupant Detection System Calibration error | Occupant detection control module is faulty. Calibration of occupant detection control module is initial setting or faulty. | Refer to DTC B16EE ODS CALIBRATION ERROR . |
| B16EF | Occupant Detection System wrong parts | Specification of occupant detection control module is improper. Occupant detection control module is faulty. | Refer to DTC B16EF ODS SYSTEM WRONG PARTS . |