GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 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 Personalization in the driver information center (DIC) is active. Memory seats cannot function if personalization turned OFF. A check mark after personalization indicates that it is active.

    2.

  2. This step verifies that the Personalization Option in the dash integration module (DIM) is activated. Memory seats cannot function if the option is turned OFF. An asterisk beside the personalization option indicates that the option is activated.

    3.

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

    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. Turn On the ignition, with the engine OFF.
  2. Press the radio Tune/SEL button to access the main menu of the DIC.
  3. With the Tune/SEL button, scroll until SETUP is highlighted.
  4. Press the Tune/SEL button to access the SETUP menu.
  5. With the Tune/SEL button, scroll to the Personalization menu.
  6. Verify that personalization is in the active state by pressing the Tune/SEL button until a check mark appears after Personalization.

Is personalization in the active state?

Go to Step 4

Go to Driver Personalization in Personalization

4

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

Is the personalization option activated?

Go to Step 5

Go to Control Module References in Computer/integrating Systems

5

  1. Turn the headlamp switch to the ON position.
  2. With a scan tool, observe the Memory Recall Switches parameter in the Driver Door Switch data list.
  3. Press the memory 1 button.

Does the scan tool display Memory 1?

Go to Step 6

Go to Step 8

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 10

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 15

Go to Step 14

8

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

Does the scan tool display Memory 1?

Go to Step 9

Go to Step 11

9
  1. Connect a 3-amp fused jumper wire between the memory 1 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 Memory 1?

Go to Step 14

Go to Step 16

10

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

Does the scan tool display Memory 2?

Go to Step 14

Go to Step 12

11

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

Did you find and correct the condition?

Go to Step 20

Go to Step 13

12

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

Did you find and correct the condition?

Go to Step 20

Go to Step 13

13

Inspect for poor connections at the harness connector of the DDSA. 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 20

Go to Step 17

14

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 20

Go to Step 18

15

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 20

Go to Step 19

16

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 20

--

17

Replace the DDSA. Refer to Front Door Switch Replacement in Doors.

Did you complete the replacement?

Go to Step 20

--

18

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

Did you complete the replacement?

Go to Step 20

--

19

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 20

--

20

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2