2010 Cadillac CTS Sedan AWD V6-3.6L Page 356
* Front Seat Tilt Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Tilt Adjuster
Actuator Replacement)
* Front Seat Adjuster Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Adjuster Actuator
Replacement)
* Driver Seat Outer Adjuster Rear Vertical Actuator Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Driver
Seat Outer Adjuster Rear Vertical Actuator Replacement)
* Seat Lumbar Sub System Replacement (without AHS) (See: Body and Frame/Seats/Service and Repair/Seat Lumbar Sub System
Replacement (Without AHS))Seat Lumbar Sub System Replacement (with AHS) (See: Body and Frame/Seats/Service and Repair/Seat
Lumbar Sub System Replacement (With AHS))
* Front Seat Recliner Actuator Motor Replacement (See: Body and Frame/Seats/Power Seat Motor/Service and Repair/Front Seat Recliner
Actuator Motor Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
B1340
DTC B1340
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 B1340 0B
- Device Power 4 Circuit Current Above Threshold
DTC B1340 42
- Device Power 4 Circuit Calibration Data Set Not Programmed
DTC B1340 4B
- Device Power 4 Circuit Calibration Not Learned
Diagnostic Fault Information
Circuit/System Description
The memory seat module (MSM) monitors the current supplied to both steering column motors. The MSM can detect both absolute and differential
current levels from the these motors. Absolute current is the maximum allowable current the module will supply to the motors. A differential
current mismatch occurs when the current supplied to the motors does not match the current returning from the motors.
Conditions for Running the DTC
The steering column motors must be active.
Conditions for Setting the DTC
B1340 0B
The absolute current has exceeded the maximum value allowed.
