LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2007 >> Acadia SLT, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> Navigation System - Voice Guidance Inoperative or Degraded Quality >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

  1. Ignition OFF, disconnect the radio harness connector X2 and VCIM harness connector X3.
  2. Test for less than 1 volt on the mono out circuit radio harness connector terminal 7and ground.
    • If greater than specified value, repair short to voltage.
  3. Test for greater than 1 ohm between the mono out circuit radio harness connector terminal 7 and ground.
    • If less than specified value, repair short to ground.
  4. Test for less than 1 ohm between the mono out circuit radio harness connector terminal 7 and the microphone out signal circuit VCIM harness connector terminal 1.
  5. If greater than specified value, repair open circuit.
  6. Test for less than 1 volt on the low reference circuit radio harness connector terminal 15 and ground.
    • If greater than specified value, repair short to voltage.
  7. Test for greater than 1 ohm between the low reference circuit radio harness connector terminal 15 and ground.
    • If less than specified value, repair short to ground.
  8. Test for less than 1 ohm between the low reference circuit radio harness connector terminal 15 and the low reference signal circuit VCIM harness connector terminal 2.
    • If greater than specified value, repair open circuit.
  9. If all circuits test normal, replace the radio.
scientia non olet · About LEMON Manuals