Lexus IS250 IS220d GSE20 ALE20 - SUPPLEMENTAL RESTRAINT SYSTEM


AIRBAG SYSTEM - DTC CHECK / CLEAR

DTC CHECK (USING SST CHECK WIRE)
Airbag System - Dtc Check / Clear. SUPPLEMENTAL RESTRAINT SYSTEM. Lexus IS250 IS220d GSE20 ALE20

Check the DTCs (Present trouble code).

Turn the engine switch on (IG), and wait for approximately 60 seconds.

Using SST, connect terminals TC and CG of the DLC3.

  • SST
  • 09843-18040
  • NOTICE:
  • Connect the terminals to the correct positions to avoid a malfunction.

Check the DTCs (Past trouble code).

Using SST, connect terminals TC and CG of the DLC3.

  • SST
  • 09843-18040
  • NOTICE:
  • Connect the terminals to the correct positions to avoid a malfunction.

Turn the engine switch on (IG), and wait for approximately 60 seconds.

Airbag System - Dtc Check / Clear. SUPPLEMENTAL RESTRAINT SYSTEM. Lexus IS250 IS220d GSE20 ALE20

Read the DTCs.

Read the blinking patterns of the DTCs. As examples, the blinking patterns for the normal system code and trouble codes 11 and 31 are shown in the illustration.

Normal system code indication (w/o past trouble code)
The light blinks twice per second.
Normal system code indication (w/ past trouble code)
When the past trouble code is stored in the center airbag sensor assembly, the light blinks only once per second.
Trouble code indication
The first blinking indicates the first DTC. The second blinking occurs after a 1.5-second pause.

If there are more than 1 code, there will be a 2.5-second pause between each code. After all codes are shown, there will be a 4.0-second pause, and then they all will be repeated.


  • HINT:
If 2 or more malfunctions are found, the indication begins with the smaller numbered code.
If DTCs are indicated without connecting the terminals, proceed to the "Diagnosis Circuit" .
DTC CLEAR (USING SST CHECK WIRE)

Clear the DTCs.

When the engine switch is turned off, the DTCs are cleared.

  • HINT:
  • Depending on the DTC, the code may not be cleared by turning off the engine switch. In this case, proceed to the next procedure.

Using SST, connect terminals TC and CG of the DLC3, and then turn the engine switch on (IG).

  • SST
  • 09843-18040

Disconnect terminal TC of the DLC3 within 3 to 10 seconds after the DTCs are output, and check if the SRS warning light comes on after 3 seconds.

Within 2 to 4 seconds after the SRS warning light comes on, connect terminals TC and CG of the DLC3.

The SRS warning light should go off within 2 to 4 seconds after connecting terminals TC and CG of the DLC3. Then, disconnect terminal TC within 2 to 4 seconds after the SRS warning light goes off.

The SRS warning light comes on again within 2 to 4 seconds after disconnecting terminal TC. Then, reconnect terminals TC and CG within 2 to 4 seconds after the SRS warning light comes on.

Check if the SRS warning light goes off within 2 to 4 seconds after connecting terminals TC and CG of the DLC3. Also check if the normal system code is output within 1 second after the SRS warning light goes off.


If DTCs are not cleared, repeat this procedure until the codes are cleared.

Airbag System - Dtc Check / Clear. SUPPLEMENTAL RESTRAINT SYSTEM. Lexus IS250 IS220d GSE20 ALE20

DTC CHECK
Airbag System - Dtc Check / Clear. SUPPLEMENTAL RESTRAINT SYSTEM. Lexus IS250 IS220d GSE20 ALE20

Check the DTCs.

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Check the DTCs by following the prompts on the tester screen.

  • HINT:
  • Refer to the intelligent tester operator's manual for further details.

Clear the DTCs.

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Clear the DTCs by following the prompts on the tester screen.

  • HINT:
  • Refer to the intelligent tester operator's manual for further details.
LEXUS IS250, IS220d / GSE20 ALE20
SUPPLEMENTAL RESTRAINT SYSTEM
Lexus IS250 IS220d GSE20 ALE20
AIRBAG SYSTEM