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Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC U1651 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: With a DMM, test the following circuits for possible malfunction:
  • GM LAN Bus+ CAN HI and GM LAN Bus- CAN LO circuits between the EBCM and the steering angle sensor for an open.
  • Steering angle sensor ground circuit for an open.
  • Steering angle sensor ignition circuit for an open.
  1. With the scan tool perform the Steering Angle Sensor Centering procedure in EBCM VSES scan tool special functions.
    • If the steering angle sensor procedure is not successful, test or replace the steering angle sensor.
  2. Test drive the vehicle. Refer to Diagnostic Test Drive 
    • If DTC U1651 resets, test or replace the EBCM.
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