Canada - Cruise Control - Check PCS Message DTC B2056/P1572
BulletinTSB2606
Issue Date
October 20, 2008
Title
Dynamic Radar Cruise - "Check PCS" Message
Component
Body Electrical
Models
'06 GS 300, '07 GS 350, '06- '07 GS 430 & IS 250/350
INTRODUCTION:
Some customers may experience a condition where the dynamic radar cruise control displays "Check PCS" on the multi-information display. Diagnostic Trouble Codes (DTCs) B2056 (Axial Gap of Radar Sensor) and P1572 (Improper Aiming of Radar Sensor Beam Axis) may also be stored. An updated distance control computer has been made available to correct this condition.
APPLICABILITY:
PRODUCTION CHANGE INFORMATION:
WARRANTY INFORMATION:
PARTS INFORMATION:
REQUIRED SSTs:
REPAIR PROCEDURE:
1. Using Techstream, clear all Pre-collision system and cruise control codes.
2. Disconnect the cable from the negative (-) battery terminal.
3. Remove Distance Control ECU.
Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: GS 300/350/430, IS 250/350
- Year: 2006 / 2007
- Service Category: Engine/Hybrid System
- Section: Cruise Control
- Keyword: Cruise Control: Distance Control ECU: Removal
4. Install the NEW Distance Control ECU.
Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: GS 300/350/430, IS 250/350
- Year: 2006 / 2007
- Service Category: Engine/Hybrid System
- Section: Cruise Control
- Keyword: Cruise Control: Distance Control ECU: Installation
5. Reconnect the cable from the negative (-) battery terminal.
6. Confirm Option Flag is Turned "ON".
A. Make sure light switch is in OFF position.
B. Turn the ignition switch ON.
C. Turn the cruise main switch ON
D. With the brake pedal depressed, set the cruise control main switch to RES/ACC 3 times within 3 seconds. Check that the VSC buzzer sounds at this time.
E. Turn the ignition switch OFF.
F. Turn the ignition switch ON.
G. Connect Techstream to the DLC3.
H. Select Radar Cruise.
I. Go the Data List and confirm that the "L/C Option Flag" says "YES". If "NO" is displayed, complete procedure again.
7. Adjust Radar Cruise (Millimeter Wave) Sensor.
Tips for aiming radar cruise:
- Perform aiming procedure in an open parking lot
- If possible, use a parking lot with straight paint stripes
- Park the car with the front to rear center line of the car on one of the stripes
- Position the reflector 16.4 feet in front of the sensor.
Refer to the Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: GS 300/350/430
- Year: 2006 / 2007
- Service Category: Engine/Hybrid System
- Section: Cruise Control
- Keyword: Dynamic Radar Cruise Control System Adjustment
- Division: Lexus
- Model: IS 250/350
- Year: 2006 / 2007
- Service Category: Engine/Hybrid System
- Section: Cruise Control
- Keyword: Millimeter Wave Radar Sensor: Adjustment
8. After repair, confirm proper operation of the cruise control functions.
9. Initialize power systems (windows, moonroof, etc.) Refer to appropriate service bulletin.
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.