LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2009 >> G3 Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Antilock Brake System With Traction Control System) >> Diagnostic Information and Procedures >> DTC C0121 >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the EBCM connector.
  2. Test for less than 5 Ω between ground and EBCM ground circuit terminals 13 and 26.
    • If greater than the specified range, test for an open/high resistance in the ground circuit. If all circuits test normal, replace the EBCM.