LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1010 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0055 or P0609 (With JF3 or JH6) >> 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 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Use a scan tool in order to clear the DTCs. Cycle the ignition to OFF and then start the engine. A current failure will set a DTC.
    • If the DTC does not reset, go to Diagnostic Aids.
  2. Turn OFF the ignition and disconnect the EBCM harness connector. At the EBCM harness connector terminal 31 W/JF3 or terminal 20 W/JH6, test for 10 volts on the vehicle speed signal circuit.
    • If the voltage is below 10 volts, test for an open or short to ground on the vehicle speed signal circuit. If all circuits test normal, replace the EBCM.
  3. Ignition ON, verify that a test lamp does not illuminates between the vehicle speed signal circuit terminal 31 W/JF3 or terminal 20 W/JH6 and ground.
    • If the test lamp illuminate, test the vehicle speed signal circuit for a short to B+. If the circuit tests normal, replace the EBCM.
  4. If all circuits test normal, replace the PCM.
scientia non olet · About LEMON Manuals