2010 Cadillac CTS Sedan AWD V6-3.6L Page 357
B1340 42
This DTC will set if the module calibration is not programmed.
B1340 4B
This DTC will set if the module calibration is not learned.
Action Taken When the DTC Sets
All movement related to the steering column motors are aborted.
Conditions for Clearing the DTC
* The current DTC will clear and set the code to history, 3 seconds after no motor movement is requested or the current is no longer
mismatched, and the power mode changes to OFF then back to ACC or RUN.
* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
Diagnostic Aids
The scan tool may reference the Memory Seat Module (MSM) as the Driver Position Module.
Reference Information
Schematic Reference
* Driver Seat Schematics (See: Body and Frame/Seats/Diagrams/Electrical Diagrams/Driver Seat Schematics)
* Tilt/Telescoping Steering Column Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Tilt/Telescoping Steering
Column Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)
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
B1340 0B
1. Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.
2. Determine which motor set this DTC by operating the motors listed below one at a time in both directions. Check for the DTC to set between
each motor test.
* Steering Column Tilt motor
* Steering Column Telescope motor
3. Clear the diagnostic trouble codes.
4. Ignition OFF, disconnect the harness connector at the appropriate steering column motor for which the DTC set.
5. Ignition ON, operate the motor adjuster switch in both directions. DTC B1340 0B should not set.
瀚慖f the DTC sets, test for a short between the appropriate motor control circuits listed below. If the circuits test normal, replace the MSM.
* Steering column telescope motor terminal C and terminal D
* Steering column tilt motor terminal A and terminal B
6. Test the appropriate control circuits listed below for a high resistance. If the circuits test normal, test or replace the steering column.
* Steering column telescope motor terminal C and terminal D
