2010 Cadillac CTS Sedan AWD V6-3.6L Page 445
* Seat horizontal motor sensor terminal C
* Seat front vertical motor sensor terminal C LHD)
* Seat front vertical motor sensor terminal A RHD)
* Seat rear vertical motor sensor terminal A (LHD)
* Seat rear vertical motor sensor terminal C (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.
* Seat horizontal motor sensor terminal A
* Seat front vertical motor sensor terminal A (LHD)
* Seat front vertical motor sensor terminal C (RHD)
* Seat rear vertical motor sensor terminal C (LHD)
* Seat rear vertical motor sensor terminal A (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 appropriate scan tool driver seat sensor parameter is less than 1.0 V.
瀚慖f greater than the specified range, test the signal circuit terminal B for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3 A fused jumper wire between the appropriate signal circuit terminal and 5 V reference circuit terminal listed below. Verify the
appropriate scan tool driver seat position sensor parameter is greater than 4.75 V.
* Seat horizontal position sensor terminal B and terminal A
* Seat front vertical position sensor terminal B and terminal A (LHD)
* Seat front vertical position sensor terminal B and terminal C (RHD)
* Seat rear vertical position sensor terminal B and terminal C (LHD)
* Seat rear vertical position sensor terminal B and terminal A (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 appropriate seat position sensor.
B1850 01 or B1850 06
1. Ignition OFF, disconnect the harness connector at the lumbar motor.
2. Test for less than 2 Ohms between the appropriate low reference circuit terminal listed below and ground:
* Terminal C (LHD)
* Terminal D (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 D (LHD)
* Terminal C (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 Lumbar Sensor parameter is less than 1.0 V.
瀚慖f greater than the specified range, test the signal circuit 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 E and the appropriate 5 V reference circuit terminal listed below. Verify
the scan tool Lumbar Sensor parameter is greater than 4.75 V.
* Terminal D (LHD)
* Terminal C (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
