2010 Cadillac CTS Sedan AWD V6-3.6L Page 568

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