2010 Cadillac CTS Sedan AWD V6-3.6L Page 460

2010 Cadillac CTS Sedan AWD V6-3.6L Page 460

Conditions for Setting the DTC

B2345 13

Any temperature sensor input that remains below 1.5 V for more that 1 second.

B2345 42

This DTC will set if the module calibration is not present.

B2345 4B

This DTC will set if the module calibration is out of range.

Action Taken When the DTC Sets

The heated seat function for both seats will be disabled.

Conditions for Clearing the DTC

* The current DTC will clear and set the code to history 3 seconds after the reference voltage returns to normal operating range and the ignition

is cycled OFF then back to ACC or RUN.

* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.

Reference Information

Schematic Reference

Heated/Cooled Seat Schematics (See: Body and Frame/Seats/Seat Temperature Element/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

B2345 13

1. Ignition OFF, disconnect the X2, X5 harness connector at the MSM.

2. Test for greater than 1.4 kOhms between the signal and low reference circuits listed below:

* Driver seat cushion terminal 1 X5 and terminal 3 X2

* Passenger seat cushion terminal 2 X5 and terminal 6 X2.

瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the

appropriate temperature sensor.

3. If all circuits test normal, replace the MSM.

B2345 42 or B2345 4B

If either DTC is set, replace the MSM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Back Cushion Heater Replacement (KA1) (See: Body and Frame/Seats/Seat Temperature Element/Service and