2010 Cadillac Truck SRX AWD V6-3.0L Page 546
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the E14F seat
cushion heating element.
5. If all circuits test normal, replace the K29R rear seat heating control module.
B2430 0B, B2430 0D, or B2430 0E
1. Ignition OFF, disconnect the harness connector at the E14G seat back heating element.
Note: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat unoccupied, then with
the seat occupied.
2. Test for 0.5 - 5 Ohms between terminal A and terminal B.
瀚慖f not within the specified range, replace the E14G seat back heating element.
3. Connect the harness connector at the E14G seat back heating element and disconnect the X2 harness connector at the K29R rear seat heating
control module.
Note: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat unoccupied, then with
the seat occupied.
4. Test for 1 - 7 Ohms between control circuit terminal 5 and control circuit terminal 2.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the E14H seat cushion
heating element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the E14H seat
cushion heating element.
5. If all circuits test normal, replace the K29R rear seat heating control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Rear Seat Back Cushion Heater Replacement (See: Body and Frame/Seats/Seat Temperature Element/Service and Repair/Rear Seat Back
Cushion Heater Replacement)
* Rear Seat Cushion Heater Replacement (40 Percent Seat) (See: Body and Frame/Seats/Seat Temperature Element/Service and Repair/Rear
Seat Cushion Heater Replacement (40 Percent Seat))Rear Seat Cushion Heater Replacement (60 Percent Seat) (See: Body and
Frame/Seats/Seat Temperature Element/Service and Repair/Rear Seat Cushion Heater Replacement (60 Percent Seat))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for rear seat heating control module replacement,
setup, and programming
B2455
DTC B2455
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) provide an overview of each diagnostic category.
DTC Descriptors
DTC B2455 00
- Cellular Phone Microphone Circuit
DTC B2455 04
- Cellular Phone Microphone Circuit Open
Diagnostic Fault Information
