2010 Cadillac CTS Sedan AWD V6-3.6L Page 643

2010 Cadillac CTS Sedan AWD V6-3.6L Page 643

* Rear vertical motor terminal 16

* Seat horizontal motor terminal 9

* Seat horizontal motor terminal 10

瀚慖f not the specified value, test the control circuit for a short to ground.

4. Ignition OFF, disconnect the X4 harness connector at the MSM.

5. Ignition ON, verify that a test lamp does not illuminate between the control circuits listed below and ground:

* Lumbar horizontal motor terminal 12

* Lumbar horizontal motor terminal 13

* Seat recline motor terminal 15

* Seat recline motor terminal 16

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.

6. Test for infinite resistance between the control circuits listed below and ground:

* Lumbar horizontal motor terminal 12

* Lumbar horizontal motor terminal 13

* Seat recline motor terminal 15

* Seat recline motor terminal 16

瀚慖f not the specified value, test the control circuit for a short to ground.

7. If all circuits test normal, replace the MSM.

B3921 01 or B3921 02

1. Ignition OFF, disconnect the X1 harness connector at the MSM.

2. Ignition ON, verify that a test lamp does not illuminate between the control circuits listed below and ground:

* Steering column telescope motor terminal 7

* Steering column telescope motor terminal 8

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.

3. Test for infinite resistance between the control circuits listed below and ground:

* Steering column telescope motor terminal 7

* Steering column telescope motor terminal 8

瀚慖f not the specified value, test the control circuit for a short to ground.

4. Ignition OFF, disconnect the X4 harness connector at the MSM.

5. Ignition ON, verify that a test lamp does not illuminate between the control circuits listed below and ground:

* Steering column tilt motor terminal 7

* Steering column tilt motor terminal 8

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.

6. Test for infinite resistance between the control circuits listed below and ground:

* Steering column tilt motor terminal 7

* Steering column tilt motor terminal 8

瀚慖f not the specified value, test the control circuit for a short to ground.

7. If all circuits test normal, replace the MSM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* 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)