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Home >> Cadillac >> 2007 >> SRX 4.6 A, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Navigation System - Voice Recognition Inoperative >> Without OnStar®
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Without OnStar®

WARNING: This page is about a different car, the 2007 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the rearview mirror.
  2. Ignition ON, test for greater than 9 volts between the terminal 2 and ground.
    • If less than specified value, test the cellular microphone signal circuit for an ope/high resistance, for a short to ground, or for a short to the drain wire. If the circuit tests normal, test or replace the radio.
  3. Test for greater than 9 volts between the terminal 2 and the terminal 10.
    • If less than specified value, test the drain wire for an open/high resistance. If the circuit tests normal, test or replace the radio.
  4. If all circuit test normal, replace the rearview mirror assembly.
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