Sienna AWD V6-3.5L (2GR-FE) (2007)
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match the ID number(s) that are registered in the ECU. Refer to TSB No. PG004-06, "Direct-Type Tire Pressure Warning System Diagnostic
Tips".
Repair Procedure No. 2
NOTE:
BEFORE performing Repair Procedure No. 2, ensure that the VIN falls BEFORE the Production Change Effective VINs listed for Repair Procedure
No. 2 in the Production Change Information table in this TSB.
1.
Using TIS Techstream, confirm the condition by checking DTCs C2121 - C2124. System Select/Tire Pressure Monitor/Trouble Codes
^
If all DTCs C2121 - C2124 are present, go to step 2.
^
If other DTCs are present, refer to TIS, 2007 model year Sienna Repair Manual, Suspension - Tire Pressure Monitoring - "Tire And Wheel:
Tire Pressure Warning System: Diagnostic Trouble Code Chart".
2.
Remove and replace the Tire Pressure Warning System ECU Assembly (replace with NEW P/N 89769-08011).
Before removing the ECU, record all four Tire Pressure Warning Valve/Sensor ID numbers from the Tire Pressure Warning System ECU Data
List using TIS Techstream.
Refer to TIS, 2007 model year Sienna Repair Manual:
^
Suspension - Tire Pressure Monitoring - "Tire And Wheel: Tire Pressure Warning ECU: Removal"
^
Suspension - Tire Pressure Monitoring - "Tire And Wheel: Tire Pressure Warning ECU: Installation"
3.
Re-initialize any affected power systems.
Refer to TSB No. PD010-07, Power System Initialization During PDS".
4.
Road test the vehicle for 20 minutes above 3 mph (5 km/h) to confirm that the Tire Pressure Warning Light does NOT come "ON". If the Tire
Pressure Warning Light does come "ON" after 20 minutes of driving, repeat step 1.
If one or more DTCs C2121 - C2124 (Tire Pressure Warning Valve/Sensor ID Numbers Not Found) are stored in the ECU after replacing the Tire
Pressure Warning System ECU Assembly, make sure that the tire pressure warning valve/sensor ID number(s) match the ID number(s) that are
registered in the ECU. Refer to TSB No. PG004-06, "Direct-Type Tire Pressure Warning System Diagnostic Tips".
