2010 Cadillac CTS Sedan AWD V6-3.6L Page 568
瀚慖f the test lamp illuminates, test the appropriate signal circuit for a short to voltage.
6. Ignition OFF, test for infinite resistance between the following circuits and ground:
* Signal circuit terminal B
* Signal circuit terminal C
瀚慖f less than the specified value, test the appropriate signal circuit for a short to ground.
7. Test for less than 2 ohms between the following signal circuits:
* Terminal B at the RCDLR and terminal 3 at the console active antenna
* Terminal C at the RCDLR and terminal 4 at the console active antenna
瀚慖f greater than the specified range, test the appropriate signal circuit for an open/high resistance.
8. If all circuits test normal, test or replace the console active antenna.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Ignition Lock Key Transmitter Antenna Replacement - Floor Console (Passive) (See: Accessories and Optional Equipment/Antitheft and
Alarm Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Ignition Lock Key Transmitter Antenna Replacement - Floor
Console (Passive))Ignition Lock Key Transmitter Antenna Replacement - Floor Console (Active) (See: Accessories and Optional
Equipment/Antitheft and Alarm Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Ignition Lock Key Transmitter Antenna
Replacement - Floor Console (Active))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for RCDLR replacement, setup, and programming
B3123
DTC B3123
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 Descriptors
DTC B3123 00
- Keyless Entry Antenna 5 Performance - Console Passive Antenna
Diagnostic Fault Information
