LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular, Entertainment, And Navigation >> Diagnostic Information and Procedures >> DTC B0004 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector X2 at the radio. Disconnect the harness connector X1 at the instrument panel cluster.
  2. Test for less than 5 ohms on the vehicle speed signal between the radio harness connector X2 terminal E and the IPC connector X1 terminal 21
    • If less than the specified range, repair the open/high resistance. If the circuit tests normal, replace the radio.
scientia non olet · About LEMON Manuals