Canada - Tire Monitor System - Lost Communication With ECU Mssg

Bulletin
3156

Issue Date
April 13, 2009

Market
Canada

Title:
TIRE PRESSURE MONITORING SYSTEM (TPMS) TIRE REGISTRATION "LOST COMMUNICATION WITH ECU"

Component
BODY ELECTRICAL

Models
All applicable models


INTRODUCTION:
The purpose of this bulletin is to provide procedures on Tire Pressure Monitoring System sensor registration when Lost Communication With ECU appears on the Techstream display.
This condition may occur when trying to register one or more sensors. Follow the procedures in this bulletin to properly register TPMS sensors.







APPLICABILITY:







WARRANTY INFORMATION:







REQUIRED TOOLS & EQUIPMENT:

NOTE:
- Additional Techstream units may be ordered by completing the order form on ETAS and faxing to (416) 431-8342.
- Additional SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.

REPAIR PROCEDURE:
1. Connect ETAS Techstream to the vehicle
2. Turn the ignition switch to the "IG-ON" position.
3. Select the datalist for the Tire Pressure Monitoring System.
4. Check and set all tire pressures to specification with an accurate tire pressure gauge and compare the information to what is displayed on the datalist.
5. After checking the tire pressure, record the TPMS sensors ID numbers.
6. With the vehicle set to "IG-ON" mode, disconnect the ETAS Techstream.







7. Using Jumper wire or equivalent, connect terminals TC and CG at the DL3 connector for at least 30 seconds. Do not cycle the ignition switch to "OFF" position during this step. (Landcruiser use TC and E1 at DLC1)
8. Once 30 seconds have passed, with the vehicle still in "IG-ON" mode, remove the jumper wire.
9. Connect ETAS Techstream and begin the registration process.

NOTE
If "Lost Communication With ECU" appears during the registration process, then terminals TC and CG were not connected properly or the key was cycled during this process.

10. After registration has been performed, leave ETAS Techstream connected and confirm that the tire pressures are reading correctly and the threshold pressures show a difference of 5 to 7psi less than the inflation pressure. For vehicles with a TPMS reset switch, press and hold the reset switch to begin the initialization process.
11. After tire pressures and thresholds pressures display on the datalist, adjust all tire pressures in relation to the expected changes in ambient temperatures.

NOTE
Please refer to TSB 1317 for tire inflation pressure compensation and adjustment procedures.

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.