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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISBODY & FRAMESEATSSEAT SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESMEMORY SEAT FEATURE INOPERATIVETEST DESCRIPTION
2006 Buick Terraza CXL, 3.5 L, AWD

Test Description

2006 Buick Terraza CXL, 3.5 L, AWDSECTION Test Description

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

  1. 7:  If the fuse in the jumper wire opens when you perform this test, the signal circuit is shorted to ground.
  2. 8:  If the fuse in the jumper wire opens when you perform this test, the signal circuit is shorted to ground.
Memory Seat Feature Inoperative

Step Action Yes No
Schematic Reference: Driver Seat Schematics 
Connector End View Reference: Power Seat Systems Connector End Views 
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. With a scan tool, observe the Memory Switch parameter.
  2. Press the memory 1 button.
Does the scan tool display Memory 1?		 Go to Step 4  Go to Step 6 
4
  1. With a scan tool, observe the Memory Switch parameter.
  2. Press the memory 2 button.
Does the scan tool display Memory 2?		 Go to Step 5  Go to Step 8 
5
  1. With a scan tool, observe the Memory Switch parameter.
  2. Press the Exit button.
Does the scan tool display Exit?		 Go to Step 12  Go to Step 11 
6 Connect a test lamp from the battery positive voltage circuit of the memory function switch to a good ground.
Dose the test lamp illuminate?		 Go to Step 7  Go to Step 13 
7 
  1. Disconnect the memory function switch harness connector.
  2. Connect a 3-amp fused jumper wire between the battery positive voltage circuit of the switch harness connector and the memory 1 switch signal circuit of the harness connector.
  3. With a scan tool, observe the Memory Switch parameter.
Does the scan tool display Memory 1?		 Go to Step 11  Go to Step 9 
8 
  1. Disconnect the memory function switch harness connector.
  2. Connect a 3-amp fused jumper wire between the battery positive voltage circuit of the switch harness connector and the memory 2 switch signal circuit of the switch harness connector.
  3. With a scan tool, observe the Memory Switch parameter.
Does the scan tool display Memory 2?		 Go to Step 11  Go to Step 10 
9 Test the memory 1 switch signal circuit between the memory function switch and the memory seat module (MSM) for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 12 
10 Test the memory 2 switch signal circuit between the memory function switch and the MSM for an open. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 16  Go to Step 12 
11 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 16  Go to Step 14 
12 Inspect for poor connections at the harness connector of the 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 16  Go to Step 15 
13 Repair the open in the battery positive voltage circuit of the memory function switch. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 16  -
14 Replace the memory function switch.
Did you complete the replacement?		 Go to Step 16  -
15 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 16  -
16 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.