Was the entire Memory Seats System Check performed?

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Go to Step 2

Go to Memory Seats System Check

1. Turn the ignition switch to the OFF position.
2. Connect a fused jumper from the memory seat/mirror diagnostic connector to ground (the connector may be taped up into the body harness).
3. Listen for a chime that acknowledges entrance into mode 1 diagnostics.

Does the memory seat/mirror module chime once and enter diagnostic mode?

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Go to Step 4

Go to Step 3

Inspect CKT 571 (YEL/BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 571 OK?

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Go to Step 4

Go to Step 13

1. Refer to Memory Seats System Check for a detailed explanation of the memory seat/mirror diagnostic modes.
2. Operate the MEMORY-1, the MEMORY-2, and the SET buttons on the left seat/lock switch (Oldsmobile) or the outside mirror switch (Buick).

The module will chime once for each switch input that the module receives.

3. Any time a switch is operated and the module does not chime, the module did not receive an input from that switch.

Were there any switch operations where the memory seat/mirror module did not sound a chime?

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Go to Step 9

Go to Step 5

1. Disconnect the ground from the memory seat/mirror diagnostic connector and then reconnect the ground again within 5 seconds.
2. The module will chime twice in order to acknowledge entrance into mode 2 diagnostics.

Does the module chime twice?

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Go to Step 6

Go to Step 12

1. Refer to Memory Seats System Check for a detailed explanation of the memory seat/mirror diagnostic modes.
2. Operate the left seat switch in all directions.

The module will chime once for each open or short circuit to a position sensor or any position sensor discontinuity.

3. Any time a switch is operated and the module chimes, the module senses a problem with the position sensor.

Were there any switch operations where the memory seat/mirror module sounded a chime?

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Go to Step 7

Go to Step 11

Inspect CKT 788 (GRY) for an open or short. Refer to Testing for Continuity in Wiring Systems.

Is CKT 788 OK?

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Go to Step 8

Go to Step 13

Inspect CKT 782 (BLK) for an open or short. Refer to Testing for Continuity in Wiring Systems.

Is CKT 782 OK?

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Go to Step 11

Go to Step 13

Inspect the following circuits for an open between the left seat/lock switch (Oldsmobile) or the outside mirror switch (Buick) and the memory seat/mirror module:

Refer to Testing for Continuity in Wiring Systems.

Is the suspect circuit OK?

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Go to Step 10

Go to Step 13

Replace the left seat/lock switch (Oldsmobile) or the outside mirror switch (Buick). Refer to Power Seat Switch Replacement in Seats or Power Mirror Switch Replacement in Doors.

Is the repair complete?

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Go to Memory Seats System Check

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The system is functioning

Perform the Memory Seats System Check .

Is the symptom still present?

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Go to Step 12

System OK

Replace the memory seat/mirror module. Refer to Memory Seat Control Module Replacement .

Is the memory seat/mirror repair complete?

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Go to Memory Seats System Check

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Repair the suspect circuit. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Memory Seats System Check

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