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Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step helps to determine if the Diversity Antenna System is operating.
  1. 3:  This step helps to determine if Radio Antenna Module is receiving the proper signal from the radio.
DTC B1235

Step Action Yes No
Schematic Reference: Radio/Audio System Schematics (Base/Uplevel Radio - UQ3/UQ5) Radio/Audio System Schematics (Premium Radio - UQ7 w/o Y91) Radio/Audio System Schematics (Luxury Radio - UQ7 w/Y91) 
1 Did you perform the Diagnostic System Check - Entertainment System? Go to Step 2  Go to Diagnostic System Check - Entertainment System 
2 
  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.
  3. Press the scan button.
Do the local AM/FM stations come in clearly?		 Go toTesting for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 
  1. Remove the radio.
  2. Test the Antenna Enable/Amplifier On Signal Circuit for a short or open.
Did you locate and correct the condition?		 Go to Step 4  Go toTesting for Intermittent Conditions and Poor Connections in Wiring Systems
4 Operate the system in order to verify the repair.
Did you complete the repair?		 System OK -
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