Power Seat Inoperative. Oldsmobile Eighty Eight 1999

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 1999 🢒 Eighty Eight 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Inoperative

Power Seat Inoperative AG1

Step	Action	Value(s)	Yes	No
1	Did you perform the entire Power Seats Diagnostic System Check?	--	Go to Step 2	Go to Power Seats System Check
2	Backprobe the LH seat switch connector with a DMM from cavity H (Oldsmobile), L (Buick), or F (Pontiac) to ground. Is the voltage within the specified range?	10-15V	Go to Step 3	Go to Step 5
3	Backprobe the LH seat switch connector with a DMM from cavity H (Oldsmobile), L (Buick), or F (Pontiac) to cavity G (Oldsmobile), A (Buick), or C (Pontiac). Is the voltage within the specified range?	10-15V	Go to Step 4	Go to Step 6
4	Replace the LH seat switch. Refer to Power Seat Switch Replacement . Is the repair complete?	--	Go to Power Seats System Check	--
5	Repair the open in CKT 1340 (ORN) between the IP fuse block and the LH seat switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Power Seats System Check	--
6	Repair the open in CKT 1250 (BLK) between the LH seat switch and S218. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Power Seats System Check	--

Power Seat Inoperative AG2

Step	Action	Value(s)	Yes	No
1	Did you perform the entire Power Seats System Check?	--	Go to Step 2	Go to Power Seats System Check
2	Backprobe the RH seat switch connector with a DMM from cavity A (Oldsmobile), L (Buick), or F (Pontiac) to ground. Is the voltage within the specified range?	10-15V	Go to Step 3	Go to Step 5
3	Backprobe the RH seat switch connector with a DMM from cavity A (Oldsmobile), L (Buick), or F (Pontiac) to cavity B (Oldsmobile), A (Buick), or C (Pontiac). Is the voltage within the specified range?	10-15V	Go to Step 4	Go to Step 6
4	Replace the RH seat switch. Refer to Power Seat Switch Replacement . Is the repair complete?	--	Go to Power Seats System Check	--
5	Repair the open in CKT 1340 (ORN) between S227 and the RH seat switch. Refer to Wiring Repairs . Is the repair complete?	--	Go to Power Seats System Check	--
6	Repair the open in CKT 1450 (BLK) between the RH seat switch and S307. Refer to Wiring Repairs . Is the repair complete?	--	Go to Power Seats System Check	--

Power Seat Inoperative Oldsmobile w/ A43

Step

Action

Value(s)

Yes

Did you perform the Power Seat Memory System Check?

Go to Step 2

Go to Memory Seats System Check

Turn the ignition switch to the OFF position.
Connect a fused jumper from the memory seat/mirror module diagnostic connector to ground.

•	The connector may be taped up into the body harness.

•	The memory seat/mirror module will beep once in order to acknowledge entrance into the mode 1 diagnostics.

•	Refer to Circuit Operation for a detailed explanation of the memory seat/mirror module diagnostic modes.

Operate the LH seat switch in all directions. (The module will beep once for each switch input received.)
Any time a switch is operated and the module does not beep, the module did not receive an input from that switch.

Were there any switch operations where the memory seat/mirror module beeped?

Go to Power Seat Inoperative in One Direction

Go to Step 3

Disconnect the LH seat switch connector.
Connect a DMM from the LH seat switch connector cavity H (ORN) to ground.

Is the voltage within the specified range?

10-15V

Go to Step 4

Go to Step 6

Connect a DMM from the LH seat switch connector cavity H (ORN) to cavity G (BLK).

Is the voltage within the specified range?

10-15V

Go to Step 5

Go to Step 7

Replace the LH seat switch. Refer to Power Seat Switch Replacement .

Is the repair complete?

Go to Memory Seats System Check

Repair the open in CKT 640 (ORN) between S237 and the LH seat switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Memory Seats System Check

Repair the open in CKT 1250 (BLK) between S218 and the LH seat switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Memory Seats System Check

Power Seat Inoperative Pontiac w/AL7

Step

Action

Value(s)

Yes

Did you perform the Power Seats System Check?

Go to Step 2

Go to Power Seats System Check

Disconnect the seat control module connector C1.
Connect a DMM from the seat control module connector C1 cavity A (ORN) to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 4

Connect a DMM from the seat control module connector C1 cavity A (ORN) to cavity B (BLK).

Is the voltage within the specified range?

10-15 V

Go to Step 6

Go to Step 5

Repair the open in CKT 1340 (ORN) between S227 and the seat control module. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Power Seats System Check

Repair the open in CKT 1250 (BLK) between the seat control module and G202. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Power Seats System Check

Disconnect the console seat switch connector C1.
Connect a DMM from the console seat switch connector C1 cavity E (BLK) to ground.

Is the resistance less than the specified value?

5 ohms

Go to Step 7

Go to Step 5

Reconnect the console seat switch connector C1.
Disconnect the seat control module connector C2.
Place the seat select switch to operate the respective seat.
Connect a DMM from the seat control module connector C1 cavity A (ORN) to the following connector C2 cavities:

•	Front vertical UP: cavity A (DK GRN)

•	Front vertical DOWN: cavity B (DK BLU)

•	Rear vertical UP: cavity C (YEL)

•	Rear vertical DOWN: cavity D (LT BLU)

•	Seat FORWARD: cavity E (TAN)

•	Seat BACK: cavity F (LT GRN)

•	Recline FORWARD: cavity G (GRY/BLK)

•	Recline BACK: cavity H (DK GRN/WHT)

Press the appropriate seat switches.

Is the voltage within the specified range for each switch pressed?

10-15 V

Go to Step 8

Go to Step 10

Reconnect the seat control module connector C1 and connector C2.
Connect a DMM from the seat control module LH connector C3 or RH connector C4 from cavity D to ground.
Briefly press each of the seat switches listed in Power Seats System Check.

Is the voltage within the specified range for any switch pressed?

10-15 V

Go to Step 11

Go to Step 9

Replace the seat control module.

Is the repair complete?

Go to Power Seats System Check

Replace the console seat switch.

Is the repair complete?

Go to Power Seats System Check

Repair the open in the left CKT 1246 (DK GRN) or in the right CKT 1247 (DK BLU) between the seat control module and S363. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Power Seats System Check