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Home >> Cadillac >> 2011 >> SRX 2.8 6 >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B1259 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the digital audio antenna coax from the digital audio broadcast module. Connect the EL-48028  to the radio. See Special Tools .
  2. Radio ON, tuned to Digital Audio, verify DTC B1259 is not set as current.
    • If the DTC is current, replace the A12 digital radio receiver.
  3. Ignition OFF, reconnect the antenna coax to the radio, disconnect the digital radio antenna coax from the T4H digital radio antenna.
  4. Ignition ON, test for 4.5-5.5 V between the antenna coax center terminal and the coax outer shield.
    • If not within the specified range, replace the antenna coax.
  5. If all circuits test normal, replace the T4H digital radio antenna.
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