Heated Seat Inoperative DeVille
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Heated Seats System Check? | -- | Go to Step 2 | |
2 |
Is the voltage within the specified range? | 10-15 V | Go to Step 3 | Go to Step 23 |
3 |
Is the voltage within the specified range? | 10-15 V | Go to Step 4 | Go to Step 24 |
4 |
Is the voltage within the specified range? | 10-15 V | Go to Step 5 | Go to Step 25 |
5 | Connect a DMM from the heated seat switch connector cavity D (BRN) to cavity A (BLK). Is the voltage within the specified range? | 10-15 V | Go to Step 6 | Go to Step 24 |
6 |
Is the resistance within the specified range? | 0-2 ohms | Go to Step 7 | Go to Step 26 |
7 | Connect a DMM from the heated seat relay module connector cavity C (DK BLU) to the heated seat switch connector cavity C (DK BLU). Is the resistance within the specified range? | 0-2 ohms | Go to Step 8 | Go to Step 27 |
8 |
Is the resistance within the specified range? | 0-2 ohms | Go to Step 9 | Go to Step 28 |
9 |
Is the resistance near the specified value? | 200 ohms | Go to Step 10 | Go to Step 28 |
10 |
Is the resistance near the specified value? | 310 ohms | Go to Step 11 | Go to Step 28 |
11 |
Is the resistance within the specified range? | 0-2 ohms | Go to Step 12 | Go to Step 29 |
12 | Connect a DMM from the heated seat relay module connector cavity A (RED/WHT) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 30 | Go to Step 13 |
13 | Connect a DMM from the heating element of the heated seat cushion connector C1 cavity A (RED/WHT) to cavity B (BRN). Is the resistance less than the specified value? | 10 ohms | Go to Step 14 | Go to Step 31 |
14 | Connect a DMM from the harness side of the heated seat cushion connector C1 cavity B to the heated seat back connector C2 cavity A (BRN). Is the resistance within the specified range? | 0-2 ohms | Go to Step 15 | Go to Step 32 |
15 | Connect a DMM from the harness side of the heated seat cushion connector C1 cavity B (BRN) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 33 | Go to Step 16 |
16 | Connect a DMM from the heating element side of the heated seat back connector C2 cavity A (BRN) to cavity B (BLK) Is the resistance less than the specified value? | 10 ohms | Go to Step 17 | Go to Step 34 |
17 | Connect a DMM from the harness side of the heated seat back connector C2 cavity B (BLK) to ground. Is the resistance within the specified range? | 0-2 ohms | Go to Step 18 | Go to Step 24 |
18 | Connect a DMM from the heated seat relay module connector cavity E (YEL/BLK) to the heated seat cushion connector C1 cavity C (YEL/BLK). Is the resistance within the specified range? | 0-2 ohms | Go to Step 19 | Go to Step 35 |
19 | Connect a DMM from the heated seat relay module connector cavity E (YEL/BLK) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 36 | Go to Step 20 |
20 |
Important: The thermistor resistance varies according to the temperature. If you measure the resistance while the seat is still warm, the resistance may vary outside of the specified range. With the seat at room temperature, connect a DMM from the heated seat cushion connector C1 cavity C (YEL/BLK) to cavity D (BLK). Is the resistance within the specified range? | 850-1150 ohms | Go to Step 21 | Go to Step 31 |
21 | Connect a DMM from the heated seat cushion connector C1 cavity D (BLK) to ground. Is the resistance within the specified range? | 0-2 ohms | Go to Step 22 | Go to Step 24 |
22 | Replace the heated seat relay module. Is the repair complete? | -- | Go to Step 37 | -- |
23 | Repair the open in CKT 1040 (ORN) (LH) or CKT 1240 (ORN) (RH) between the rear compartment fuse block and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
24 | Repair the open in CKT 850 (BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
25 | Repair the open in CKT 41 (BRN) between the heated seat switch and splice S312. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
26 | Repair the open in CKT 1501 (PNK) between the heated seat switch and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
27 | Repair the open in CKT 1461 (DK BLU) between the heated seat switch and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
28 | Replace the heated seat switch. Is the repair complete? | -- | Go to Step 37 | -- |
29 | Repair the open in CKT 950 (RED/WHT) between the heated seat relay module and the heated seat cushion. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
30 | Repair the short to ground in CKT 950 (RED/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
31 | Replace the faulty heat element. Refer to Bulletin 03-08-50-005. Is the repair complete? | -- | Go to Step 37 | -- |
32 | Repair the open in CKT 900 (BRN) between the heated seat cushion and the heated seat back. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
33 | Repair the short to ground in CKT 900 (BRN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
34 | Replace the faulty heat element. Refer to Bulletin 03-08-50-005. Is the repair complete? | -- | Go to Step 37 | -- |
35 | Repair the open in CKT 952 (YEL/BLK) between the heated seat relay module and the heated seat cushion. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
36 | Repair the short to ground in CKT 952 (YEL/BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 37 | -- |
37 | Perform the Heated Seats System Check. Refer to Heated Seats System Check . Is the heated seats system operating properly? | -- | System OK | Go to Step 2 |
Heated Seat Inoperative Eldorado
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Heated Seats System Check? | -- | Go to Step 2 | |
2 |
Is the voltage within the specified range? | 10-15 V | Go to Step 3 | Go to Step 28 |
3 | Connect a DMM from the heated seat relay module connector cavity D (ORN) to cavity F (BLK). Is the voltage within the specified range? | 10-15 V | Go to Step 4 | Go to Step 29 |
4 |
Is the voltage within the specified range? | 10-15 V | Go to Step 5 | Go to Step 30 |
5 | Connect a DMM from the heated seat switch connector cavity 5 (BRN) to cavity 2 (BLK). Is the voltage within the specified range? | 10-15 V | Go to Step 6 | Go to Step 29 |
6 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 7 | Go to Step 31 |
7 | Connect a DMM from the heated seat relay module connector cavity C (LT BLU) to the heated seat switch cavity 3 (LT BLU). Is the resistance less than the specified value? | 5 ohms | Go to Step 8 | Go to Step 32 |
8 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 9 | Go to Step 33 |
9 |
Is the resistance near the specified value? | 200 ohms | Go to Step 10 | Go to Step 33 |
10 |
Is the resistance near the specified value? | 310 ohms | Go to Step 11 | Go to Step 33 |
11 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 12 | Go to Step 34 |
12 | Connect a DMM from the heated seat relay module connector cavity A (RED/WHT) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 35 | Go to Step 13 |
13 | Connect a DMM from the heating element of the heated seat cushion connector C1 cavity A (RED/WHT) to cavity B (BRN). Is the resistance less than the specified value? | 10 ohms | Go to Step 14 | Go to Step 36 |
14 | Connect a DMM from the harness side of the heated seat cushion connector C1 cavity B (BRN) to the seat cushion connector C2 cavity A (BRN). Is the resistance less than the specified value? | 5 ohms | Go to Step 15 | Go to Step 37 |
15 | Connect a DMM from the harness side of the heated seat cushion connector C1 cavity B (BRN) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 38 | Go to Step 16 |
16 | Connect a DMM from the heating element side of the heated seat cushion connector C2 cavity A (BRN) to cavity B (BLK) Is the resistance less than the specified value? | 10 ohms | Go to Step 17 | Go to Step 36 |
17 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 18 | Go to Step 37 |
18 | Connect a DMM from the heating element of the heated seat back connector C3 cavity A (BRN) to cavity B (BRN). Is the resistance less than the specified value? | 10 ohms | Go to Step 19 | Go to Step 39 |
19 | Connect a DMM from the harness side of the heated seat back connector C3 cavity B (BRN) to connector C4 cavity A (BRN). Is the resistance less than the specified value? | 5 ohms | Go to Step 20 | Go to Step 37 |
20 | Connect a DMM from the harness side of the heated seat back connector C3 cavity B (BRN) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 38 | Go to Step 21 |
21 | Connect a DMM from the heating element side of the heated seat back connector C4 cavity A (BRN) to cavity B (BLK). Is the resistance less than the specified value? | 10 ohms | Go to Step 22 | Go to Step 39 |
22 | Connect a DMM from the harness side of the heated seat back connector C4 cavity B (BLK) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 23 | Go to Step 29 |
23 | Connect a DMM from the heated seat relay module connector cavity E (YEL/BLK) to the seat cushion connector C1 terminal C (YEL/BLK). Is the resistance less than the specified value? | 5 ohms | Go to Step 24 | Go to Step 40 |
24 | Connect a DMM from the heated seat relay module connector cavity E (YEL/BLK) to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 41 | Go to Step 25 |
25 |
Important: The thermistor resistance varies according to the temperature. If you measure the resistance while the seat is still warm, the resistance may vary outside of the specified range. With the seat at room temperature, connect a DMM from the heated seat cushion connector C1 cavity C (YEL/BLK) to cavity D (BLK). Is the resistance within the specified range? | 850-1150 ohms | Go to Step 26 | Go to Step 36 |
26 | Connect a DMM from the heated seat cushion connector C1 cavity D (BLK) to ground. Is the resistance near the specified value? | 5 ohms | Go to Step 29 | Go to Step 27 |
27 | Replace the heated seat relay module. Is the repair complete? | -- | Go to Step 42 | -- |
28 | Repair the open in CKT 1140 (ORN) between the rear compartment fuse block and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
29 | Repair the open in CKT 850 (BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
30 | Repair the open in CKT 41 (BRN) between the heated seat switch and splice S312. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
31 | Repair the open in CKT 1501 (PNK) between the heated seat switch and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
32 | Repair the open in CKT 1461 (DK BLU) between the heated seat switch and the heated seat relay module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
33 | Replace the heated seat switch. Is the repair complete? | -- | Go to Step 42 | -- |
34 | Repair the open in CKT 950 (RED/WHT) between the heated seat relay module and the heated seat switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
35 | Repair the short to ground in CKT 950 (RED/WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
36 | Replace the faulty heat element. Refer to Bulletin 03-08-50-005. Is the repair complete? | -- | Go to Step 42 | -- |
37 | Repair the open in CKT 900 (BRN) between the heated seat cushion and the heated seat back. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
38 | Repair the short to ground in CKT 900 (BRN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
39 | Replace the faulty heat element. Refer to Bulletin 03-08-50-005. Is the repair complete? | -- | Go to Step 42 | -- |
40 | Repair the open in CKT 952 (YEL/BLK) between the heated seat relay module and the heated seat cushion. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
41 | Repair the short to ground in CKT 952 (YEL/BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
42 | Perform the Heated Seats System Check. Refer to Heated Seats System Check . Is the heated seats system operating properly? | -- | System OK | Go to Step 2 |
