Canada - Restraint System - SRS Light ON/DTC B1861
BulletinTSB2614
Issue Date
December 12, 2008
Title
SRS LIGHT "ON" - DTC B1861
Component
Body
Models
'06- '08 IS 250/350
INTRODUCTION:
Some 2006-2008 MY IS250/350 vehicles may exhibit a SRS Light "On" condition with DTC B1861. Use the following information to address this condition.
APPLICABLE VEHICLES:
WARRANTY INFORMATION:
PARTS INFORMATION:
REQUIRED SSTs:
DIAGNOSTIC/REPAIR PROCEDURE:
1. Using Techstream, confirm that DTC B1861 is present or in history.
2. Disconnect negative battery terminal.
3. Disconnect Driver Side Knee Air Bag Squib.
NOTE
To access Driver Side Knee Air Bag Squib refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Supplemental Restraint System
- Keyword: Supplemental Restraint System: Airbag System: Driver Side Knee Airbag Assembly: Removal
Do NOT remove knee air bag.
4. Connect Driver Side Knee Air Bag Squib.
5. Connect negative battery terminal.
6. Turn engine switch (IG) on and wait at least 60 seconds.
7. Clear the DTCs stored in memory.
8. Turn engine switch (IG) off.
9. Turn engine switch (IG) on and wait at least 60 seconds.
10. Check for SRS DTC's.
A. If DTC B1861 is present, please refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Supplemental Restraint System
- Keyword: Supplemental Restraint System: Airbag System: B1860/64: Short in Driver Side Knee Airbag Squib Circuit
(Reference DTC B1861: Open in Driver Side Knee Airbag Squib Circuit)
B. If DTC B1861 is no longer present, replace the Instrument Panel Wire Harness.
Instrument Panel Wire Harness Part Number Identification Method
1. The part number to order the correct part is located on the harness near the connector for the right knee airbag assembly. To access the part tag, remove right side knee airbag assembly. Refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Supplemental Restraint System
- Keyword: Front Passenger Side Knee Airbag Assembly: Removal
Instrument Panel Wire harness Replacement
1. Remove Rear Console Box
NOTE
To remove the Rear Console Box refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Interior Panels/Trim
- Keyword: Rear Console Box: Removal
2. Remove Instrument Panel Safety Pad.
NOTE
To remove the Instrument Panel Safety Pad refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Interior Panels/Trim
- Keyword: Instrument Panel Safety Pad: Removal
3. Replace Instrument Panel Wire Harness.
Unplug the harness from each connector on the vehicle. Make note of harness routing.
4. Install the new Instrument Panel Wire Harness.
Route and plug in the new harness ensuring the connectors are fully installed into the mating connector.
a. Reinstall the Instrument Panel Safety Pad.
NOTE
To reinstall the Instrument Panel Safety Pad refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Interior Panels/Trim
- Keyword: Rear Console Box: Installation
5. Reinstall the Rear Console Box
NOTE
To reinstall the Rear Console Box refer to the Repair Manual within E-TAS / TIS library:
- Model: IS 250/350
- Year: 2006/2007/2008
- Service Category: Vehicle Interior
- Section: Interior Panels/Trim
- Keyword: Rear Console Box: Installation
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.