Power Seat Inoperative. Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Inoperative

Power Seat Inoperative with A43

Step	Action	Value(s)	Yes	No
1	Did you perform the Power Seat Memory System Check?	--	Go to Step 2	Go to Memory Seats System Check
2	Disconnect the memory seat module (MSM) connector C2. Connect a J 39200 digital multimeter (DMM) from MSM connector C2 cavity A (ORN/BLK) to ground. Is the voltage within the specified range?	10-15 V	Go to Step 3	Go to Step 8
3	Connect a DMM from MSM connector C2 cavity A (ORN/BLK) to cavity B (BLK). Is the voltage within the specified range?	10-15 V	Go to Step 4	Go to Step 9
4	Disconnect MSM connector C1. For vehicles without W01, connect a DMM from MSM connector C1 cavity B11 (ORN) to connector C2 cavity B (BLK). For vehicles with W01, connect a DMM from MSM connector C1 cavity D11 (ORN) to connector cavity B (BLK). Is the voltage within the specified range?	10-15 V	Go to Step 5	Go to Step 10
5	Disconnect the left seat switch connector. Connect a DMM from MSM connector C2 cavity A (ORN/BLK) to the left seat switch connector cavity L (BLK). Is the voltage within the specified range?	10-15 V	Go to Step 6	Go to Step 11
6	Connect a DMM from the left seat switch connector cavity J (ORN) to cavity L (BLK). Is the voltage within the specified range?	10-15 V	Go to Step 7	Go to Step 12
7	Replace the left seat switch. Refer to Power Seat Switch Replacement . Is the left seat switch replacement complete?	--	Go to Step 13	--
8	Repair the open in CKT 1340 (ORN) between the rear junction block and the MSM. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Step 13	--
9	Repair the open in CKT 450 (BLK) between S208 and the MSM. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Step 13	--
10	Repair the open in CKT 2040 (ORN) between the rear junction block and the MSM. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Step 13	--
11	Repair the open in CKT 450 (BLK) between S332 and the left seat switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Step 13	--
12	Repair the open in CKT 2040 (ORN) between S338 and the left seat switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete?	--	Go to Step 13	--
13	Perform the Power Seat Memory System Check. Refer to Memory Seats System Check . Did you perform the Memory Seats System Check?	--	Go to Memory Seats System Check	--

Power Seat Inoperative without A43

Step

Action

Value(s)

Yes

Did you perform the Power Seats System Check?

Go to Step 2

Go to Power Seats System Check

Use a test lamp in order to backprobe the seat switch connector from the appropriate cavity to ground:

•	Left: cavity J (ORN)

•	Right: cavity P (ORN)

Does the test lamp light?

Go to Step 3

Go to Step 5

Use a test lamp in order to backprobe the seat switch connector from the appropriate cavities:

•	Left: cavity J (ORN) to cavity L (BLK)

•	Right: cavity P (ORN) to cavity S (BLK)

Does the test lamp light?

Go to Step 4

Go to Step 6

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

Is the seat switch replacement complete?

Go to Step 7

Repair the open in CKT 1340 (ORN) between the rear junction block and the appropriate seat switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 7

Repair the open in CKT 850 (BLK) between S208 and the inoperative seat switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 7

Perform the Power Seats System Check. Refer to Power Seats System Check .

Was the Power Seat System Check performed?

Go to Power Seats System Check