2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 734
polarity and applies voltage and ground to the opposite circuits to move the seat in the opposite direction.
Conditions for Running the DTC
* DTC B1325 must not be present.
* Module battery voltage must be between 9-16 V.
Conditions for Setting the DTC
B3920 00
Current out of the module does not match the current returning to the module from 1.5-5 A.
B3920 01
The voltage on any power rail 1 motor control circuit exceeds 2.78 V for 100 ms.
B3920 02
The voltage on any power rail 1 motor control circuit is below 1.47 V for 100 ms.
B3920 42
This DTC will set if the module calibration is not programmed.
B3920 0B
The differential current measured through the high and low side of the power rail is within tolerance of each other, but the absolute current or an
over-current has exceeded the maximum value.
Action Taken When the DTC Sets
The seat memory control module will not allow operation of any motor on the power rail for which the DTC was set.
Conditions for Clearing the DTC
* The current DTC clears when the fault is no longer present and the power mode changes to OFF then back to ACC or RUN.
* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
Driver Seat Schematics (See: Body and Frame/Seats/Diagrams/Electrical Diagrams/Driver Seat Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
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/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
B3920 01 or B3920 02
1. Ignition OFF, disconnect the X4, X5 harness connectors at the K40 seat memory control module.
2. Test for infinite resistance between the control circuit terminals listed below and ground:
