LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 808 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B2455 >> 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 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF. Disconnect the harness connector at the cellular microphone and the harness connector C2 at the VCIM.
  2. Test for less than 1 ohm of resistance between terminal A and terminal 10.
    • If greater than the specified value, test the drain wire circuit for an open/high resistance.
  3. Reconnect the harness connector C2 at the VCIM.
  4. Ignition ON, test for less than 9.5 volts at the signal circuit terminal B.
    • If greater than the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the VCIM.
  5. If all circuits test normal, test or replace the cellular microphone.
scientia non olet · About LEMON Manuals