Lexus IS250 IS220d GSE20 ALE20 - SUPPLEMENTAL RESTRAINT SYSTEM
CHECK CONNECTION OF CONNECTORS
CHECK FLOOR WIRE NO. 2 (SHORT)
CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
CHECK SEAT POSITION AIRBAG SENSOR
REPLACE SEAT POSITION AIRBAG SENSOR
CHECK CENTER AIRBAG SENSOR ASSEMBLY
DTC B1653/35 Seat Position Airbag Sensor Circuit Malfunction
DESCRIPTION
The seat position airbag sensor circuit consists of the center airbag sensor assembly and the seat position airbag sensor.
DTC B1653/35 is recorded when a malfunction is detected in the seat position airbag sensor circuit.
| DTC No. | DTC Detecting Condition | Trouble Area |
| B1653/35 | The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the seat position airbag sensor circuit for 2 seconds. Seat position airbag sensor malfunction Center airbag sensor assembly malfunction | Floor wire No. 2 Seat position airbag sensor Center airbag sensor assembly |
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK DTC |
Turn the engine switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in the memory .
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs .
- OK:
- DTC B1653/35 is not output.
- HINT:
- Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.
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| OK | ||
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| 2.CHECK CONNECTION OF CONNECTORS |
Turn the engine switch off.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Check that the connectors are properly connected to the center airbag sensor assembly and the seat position airbag sensor.
- OK:
- The connectors are properly connected.
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| OK | ||
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| 8.REPLACE SEAT POSITION AIRBAG SENSOR |
Turn the engine switch off.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Replace the seat position airbag sensor .
- HINT:
- Perform inspection using parts from a normal vehicle if possible.
| NEXT | |
| 9.CHECK CENTER AIRBAG SENSOR ASSEMBLY |
Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in the memory .
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs .
- OK:
- DTC B1653/35 is not output.
- HINT:
- Codes other than DTC B1653/35 may be output at this time, but they are not related to this check.
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| OK | ||
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