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Occupant Detection System (Diagnostics): Diagnosis Subaru Forester SG рестайлинг

Airbag 6 illustrations ~530 words

INSPECTION

Before performing diagnosis, check the following items which might affect the occupant detection system problems.

READ DIAGNOSTIC TROUBLE CODE (DTC)

Read the DTC from recorded occupant detection control module when the occupant detection system is malfunction occurrence.

Scheme 162

Scheme 162: READ DIAGNOSTIC TROUBLE CODE (DTC)
Scheme 162: READ DIAGNOSTIC TROUBLE CODE (DTC)

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Scheme 165
  1. Prepare the Subaru Select Monitor kit. SPECIAL TOOL PREPARATION TOOL, GENERAL DESCRIPTION. >
  2. Connect the diagnosis cable to Subaru Select Monitor.
  3. Insert the cartridge to Subaru Select Monitor. SPECIAL TOOL PREPARATION TOOL, GENERAL DESCRIPTION. >
  4. Connect the Subaru Select Monitor to data link connector. Data link connector is located in the lower portion of instrument panel (on the driver's side). Connect the diagnosis cable to data link connector. CAUTION: Do not connect the scan tools except for Subaru Select Monitor.
  5. Turn the ignition switch to ON (engine OFF) and turn the Subaru Select Monitor switch to ON.
  6. On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
  7. On the «System Selection Menu» display screen, select the {Occupant detection system} and press the [YES] key.
  8. Press the [YES] key after the {Occupant Detection System} is displayed.
  9. On the «Occupant Detection System» display screen, select {DTC Display}, and then press the [YES] key. NOTE: For details concerning operation procedure, refer to the "SUBARU SELECT MONITOR OPERATION MANUAL ". For details concerning DTCs, refer to List of Diagnostic Trouble Code (DTC). LIST OF DIAGNOSTIC TROUBLE CODE (DTC). > Display all the DTCs detected. If a particular DTC is not properly stored in memory (due to a drop in occupant detection control module power supply voltage, etc.) for an occurrence of a problem, a DTC that is suffixed with a question mark"?" will appear on the Subaru Select Monitor display. This shows it may be an unreliable reading.
  10. If the occupant detection control module cannot communicate with Subaru Select Monitor, check the communication circuit. COMMUNICATION FOR INITIALIZING IMPOSSIBLE INSPECTION, SUBARU SELECT MONITOR. >
  11. When DTC is not displayed, check the meter circuit or Subaru Select Monitor communication circuit. INSPECTION SUBARU SELECT MONITOR. >
  1. When a problem has occurred to occupant detection system, the airbag warning light illuminates to notify the occurrence of malfunction.
  2. Read the DTC of airbag system, and perform the diagnosis of occupant detection system when the DTC of occupant detection system failure is displayed.

Note. DTC of airbag system and occupant detection system are same code, but may differ.

StepCheckYesNo
1 CHECK AIRBAG WARNING LIGHT. Turn the ignition switch to ON to check if the airbag warning light illuminates.Does the airbag warning light illuminate for approximately 6 seconds then go off?Finish the diagnosis.Go to step 2.
2 CHECK THE DTC OF AIRBAG SYSTEM. Connect the Subaru Select Monitor to data link connector, and read the DTC of airbag system.Are the following DTCs displayed on Subaru Select Monitor? DTC 28 ODS ADJUSTMENT DTC 29 ODS FAILURE DTC 37 BUCKLE SWITCH RH FAILUREGo to step 3.Inspect using the airbag system Diagnostic Procedure with Diagnostic Trouble Code (DTC) DIAGNOSTIC CHART WITH TROUBLE CODE . >
3 CHECK THE DTC OF OCCUPANT DETECTION SYSTEM. Read the DTC of occupant detection system using Subaru Select Monitor.Are the following DTCs displayed on Subaru Select Monitor? DTC 28 Adjustment / Inspection halt DTC 29 ODS FAILURE DTC 29 POWER SUPPLY FAILURE DTC 37 BUCKLE SWITCH RH FAILUREPerform the inspection using "Diagnosis procedure with Diagnostic Trouble Code (DTC)" for occupant detection system. DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC). >COMMUNICATION FOR INITIALIZING IMPOSSIBLE INSPECTION, SUBARU SELECT MONITOR. >

DIAGNOSTIC PROCEDURE WHEN AIRBAG WARNING LIGHT ILLUMINATED

DTC 29 ODS FAILURE

DETECTING CONDITION

  1. Malfunction is occurred in load cell sensor.
  2. Malfunction is occurred in occupant detection control module.
  3. Malfunction is occurred in occupant detection system harness.
CAUTIONSeat cushion frame assembly is a non-disassemble part.
StepCheckYesNo
1 CHECK INSTALLATION OF CONNECTORAre connectors of occupant detection control module and load cell sensor fit perfectly?Go to step 2.Fit the connector.
2 INSPECT THE OCCUPANT DETECTION CONTROL MODULE, LOAD CELL SENSOR AND SEAT HARNESSIs there damage on occupant detection control module, load cell sensor and seat harness?Go to step 3.Replace the seat cushion frame assembly.
3 PERFORM SYSTEM CALIBRATION.Perform the system calibration for system using the Subaru Select Monitor.Is the system calibration completed correctly?Finish the diagnosis.

DTC 29 ODS FAILURE - DIAGNOSTIC PROCEDURE

DTC 37 BUCKLE SWITCH RH FAILURE

DETECTING CONDITION

  1. Buckle switch circuit is shorted to ground.
  2. Buckle switch circuit is shorted to power supply.
  3. Buckle switch circuit is open. WIRING DIAGRAM

Scheme 166

Scheme 166
Scheme 166
StepCheckYesNo
1 CHECK BUCKLE SWITCH (RH). Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for more than 20 seconds. Disconnect the seat belt switch connector (R214) and connect the connector (1Y) in the test harness Y to connector (AB55). Connect the battery ground terminal and turn the ignition switch to ON.Does the airbag warning light illuminate for approximately 6 seconds then go off?Replace the buckle switch (RH). DISASSEMBLY Front Seat. >Replace the seat frame assembly. REMOVAL Front Seat. >

DTC 37 BUCKLE SWITCH RH FAILURE - DIAGNOSTIC PROCEDURE

DTC 29 POWER SUPPLY FAILURE

DETECTING CONDITION

  1. No power is supplied to occupant detection control module.
  2. Power supply circuit harness is faulty.
  3. Battery voltage is reduced.
CAUTIONSeat cushion frame assembly is a non-disassemble part.

WIRING DIAGRAM

Scheme 167

Scheme 167
Scheme 167
StepCheckYesNo
1 CHECK BATTERY.Is the voltage more than 11 V?Go to step 2.Charge or replace the battery.
2 CHECK HARNESS. Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for more than 20 seconds. Disconnect the connector (AB53) from body harness. Connect the connector (1Z) in the test harness Z to the connector (AB53). Connect the ground cable to the battery. 5) Measure the voltage between connector (2Z) in the test harness Z and chassis ground. Connector & terminal (2Z) No. 4 (+) - Chassis ground (-)Is the voltage more than 10 V?Replace the seat cushion frame assembly. REMOVAL Front Seat. >Go to step 3.
3 CHECK FUSE. Turn the ignition switch to OFF. Remove the fuse No. 7 and perform visual inspection.Is the fuse No. 3 blown out?Replace the fuse.Repair or replace the body harness.

DTC 29 POWER SUPPLY FAILURE - DIAGNOSTIC PROCEDURE

SymptomProblem parts
Passenger's airbag ON/OFF indicator does not operate.Load cell sensor is faulty. Airbag ON/OFF indicator is faulty. Install condition of passenger's seat is faulty. Passenger's seat is damaged. Damage for floor panel
Vehicle after collisionPassenger's seat is damaged. Damage for floor panel Occupant detection control module is damaged. Load cell sensor damaged Seat harness damaged Buckle switch damaged
Airbag warning light comes on.Combination meter is faulty. Airbag control module is faulty. Steering roll connector is faulty. Each airbag module is faulty.
When installing the seat or seat articlesPassenger's seat is poor installation. Passenger's seat is damaged.

GENERAL DIAGNOSTIC TABLE

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