GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Body 🢒 Seats 🢒 Memory Seat Feature Inoperative

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step verifies that the personalization option is active.

    2.

  2. Turning ON the headlamps switch in this step eliminates the possibility of the memory function switch finding an alternative path to ground through the illumination circuit.

    3.

  3. This step tests the integrity of the memory SET switch signal circuit of the driver door switch assembly. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

    4.

  4. This step tests the integrity of the memory 1 switch signal circuit of the driver door switch assembly. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

    5.

  5. This step tests the integrity of the memory 2 switch signal circuit of the driver door switch assembly. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Step

Action

Yes

No

Schematic Reference: Driver Seat Schematics

Connector End View Reference: Power Seat Connector End Views or Power Door Systems Connector End Views in Doors

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Verify that the Memory Seat Feature Inoperative complaint is present.

Does the memory seat system operate as described in the system description and operation?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, navigate to the Settings Options screen by making the following selections:
    4. • Dash Integration Module (DIM)
    • Special Functions
    • Set Options
    • Select the appropriate Personalization
  4. Follow the on screen instructions to verify that the Personalization Option is activated.

Is the personalization option activated?

Go to Step 4

Go to Body Control Module (BCM) Programming/RPO Configuration in Computer/Integrating Systems

4

  1. Turn ON the Headlamps switch.
  2. With a scan tool, observe the Memory Recall Switches parameter in the Driver Door Module data list.
  3. Press the Memory SET button.

Does the scan tool display Set?

Go to Step 5

Go to Step 8

5
  1. With a scan tool, observe the Memory Recall Switches parameter.
  2. Press the Memory 1 button.

Does the scan tool display Memory 1?

Go to Step 6

Go to Step 10

6
  1. With a scan tool, observe the Memory Recall Switches parameter.
  2. Press the Memory 2 button.

Does the scan tool display Memory 2?

Go to Step 7

Go to Step 11

7
  1. With a scan tool, observe the Memory Recall Switches parameter.
  2. Press the EXIT button.

Does the scan tool display Exit?

Go to Step 17

Go to Step 16

8

  1. Disconnect the memory function switch harness connector.
  2. Connect a 3-amp fused jumper wire between the memory set switch signal circuit of the memory function switch connector and a good ground.
  3. With a scan tool, observe the Memory Recall Switches parameter.

Does the scan tool display Set?

Go to Step 9

Go to Step 12

9
  1. Connect a 3-amp fused jumper wire between the memory set switch signal circuit of the memory function switch connector and the ground circuit of the switch connector.
  2. With a scan tool, observe the Memory Recall Switches parameter.

Does the scan tool display Set?

Go to Step 16

Go to Step 18

10

  1. Disconnect the memory function switch harness connector.
  2. Connect a 3-amp fused jumper wire between the memory 1 switch signal circuit of the memory function switch connector and a good ground.
  3. With a scan tool, observe the Memory Recall Switches parameter.

Does the scan tool display Memory 1?

Go to Step 16

Go to Step 13

11

  1. Disconnect the memory function switch harness connector.
  2. Connect a 3-amp fused jumper wire between the memory 2 switch signal circuit of the memory function switch connector and a good ground.
  3. With a scan tool, observe the Memory Recall Switches parameter.

Does the scan tool display Memory 2?

Go to Step 16

Go to Step 14

12

Test the memory set switch signal circuit of the driver door switch assembly for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 15

13

Test the memory 1 switch signal circuit of the driver door switch assembly for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 15

14

Test the memory 2 switch signal circuit of the driver door switch assembly for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 15

15

Inspect for poor connections at the harness connector of the driver door switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 19

16

Inspect for poor connections at the harness connector of the memory function switch. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 20

17

Inspect for poor connections at the harness connector of the memory seat module (MSM). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 21

18

Repair the open in the ground circuit of the memory function switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

--

19

Replace the driver door switch assembly. Refer to Front Door Switch Replacement in Doors.

Did you complete the replacement?

Go to Step 22

--

20

Replace the memory function switch. Refer to Driver Seat Adjuster Memory Switch Replacement .

Did you complete the replacement?

Go to Step 22

--

21

Replace the MSM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 22

--

22

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2