2010 Cadillac CTS Sedan AWD V6-3.6L Page 444
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)
Description and Operation
* Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)
* Lumbar Support Description and Operation (Without Memory-A45) (See: Body and Frame/Seats/Description and Operation/Lumbar
Support Description and Operation (Without Memory-A45))Lumbar Support Description and Operation (With Memory-A45) (See: Body
and Frame/Seats/Description and Operation/Lumbar Support Description and Operation (With Memory-A45))
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 Verification
Ignition ON, observe the scan tool Memory Seat Module driver seat and lumbar position sensor parameters. The readings should be between 0.22 V
and 4.75 V and change while adjusting seat and lumbar positions.
Circuit/System Testing
B1825 01 or B1825 06
1. Ignition OFF, disconnect the X2 harness connector at the seat recline motor.
2. Test for less than 2 Ohms between the appropriate low reference circuit terminal listed below and ground:
* Terminal 1 (LHD)
* Terminal 3 (RHD)
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8 - 5.2 V between the appropriate 5 V reference circuit terminal listed below and ground:
* Terminal 3 (LHD)
* Terminal 1 (RHD)
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Driver Seat Recline Sensor parameter is less than 1.0 V.
瀚慖f greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3 A fused jumper wire between the signal circuit terminal 2 and the appropriate 5 V reference circuit terminal listed below. Verify
the scan tool Driver Seat Recline Sensor parameter is greater than 4.75 V.
* Terminal 3 (LHD)
* Terminal 1 (RHD)
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat recline position sensor.
B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06
1. Ignition OFF, disconnect the X2 harness connector at the appropriate seat adjuster motor.
2. Test for less than 2 Ohms between the appropriate low reference circuit listed below and ground.
