2010 Cadillac Truck SRX AWD V6-3.0L Page 434
5. If all circuits test normal, replace the T4H digital radio antenna.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for Radio and Digital Audio Broadcast replacement,
setup, and programming
B1265
DTC B1265
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC B1265 02
- Switched 14 Volt Performance Short to Ground
Circuit/System Description
When the radio is on, a discrete 12 V signal is supplied on the entertainment remote enable circuit to the Audio Amplifier, Navigation Info Display
and Display Actuator (if equipped), and the Seatback Video Displays (if equipped). This signal is used to control the power state of the
components.
Conditions for Running the DTC
The following are conditions that must be present in order for the radio to enable diagnostics:
* The radio is ON.
* The system voltage is 9 -16 V
Conditions for Setting the DTC
* The radio detects a short to ground on the entertainment remote enable circuit circuit.
* The above condition is present for greater than 250 mS.
Action Taken When the DTC Sets
* The radio implements a current limiting mode and disables the output on the entertainment remote enable circuit.
* All components connected on the entertainment remote enable circuit will be inoperative.
Conditions for Clearing the DTC
* The condition for setting the DTC no longer exists.
* After the ignition has been OFF for a sufficient amount of time to allow the radio to enter a low power/sleep state, the radio will re-enable the
output on the following ignition cycle and the DTC will become history.
* A history DTC clears after 50 malfunction-free ignition cycles.
Diagnostic Aids
* This DTC may be stored as a history DTC without affecting the operation of the radio/infotainment systems.
* The radio's current limiting logic will not re-enable the output on the entertainment remote enable circuit until after the radio performs a full
power-down. It may be necessary to wait 5 minutes with the key OFF and retained accessory power OFF for the radio to re-enable this
output.
Reference Information
Schematic Reference
* Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System
