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 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 module connector cavity C (LT BLU) to the heated seat switch cavity 3 (LT BLU) (LH) or (LT BLU/BLK) (RH). 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 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 connector C1 cavity B (RED/WHT). 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 (RED/WHT) to the seat cushion connector C2 cavity A (RED/WHT). 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 (RED/WHT) 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 (RED/WHT) to connector C2 cavity B (RED/WHT) 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 (RED/WHT) to connector C3 cavity B (RED/WHT). 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 (RED/WHT) to connector C4 cavity A (RED/WHT). 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 (RED/WHT) 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 (RED/WHT) to connector C4 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 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 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. Therefore, 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 less than the specified value? | 5 ohms | Go to Step 29 | Go to Step 27 |
27 | Replace the heated seat module. Refer to Front Seat Heater Control Module Replacement . Is the heated seat module replacement complete? | -- | Go to Step 42 | -- |
28 | Repair the open in CKT 1140 (ORN) (LH) or CKT 1240 (ORN) (RH) between the rear compartment fuse block and the heated seat 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) (LH) or CKT 1503 (PNK/BLK) (RH) between the heated seat switch and the heated seat module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
32 | Repair the open in CKT 1462 (LT BLU) (LH) or CKT 1505 (LT BLU/BLK) (RH) between the heated seat switch and the heated seat module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 42 | -- |
33 | Replace the heated seat switch. Refer to Heated Seat Switch Replacement . Is the heated seat switch replacement complete? | -- | Go to Step 42 | -- |
34 | Repair the open in CKT 950 (RED/WHT) between the heated seat module and the heated seat cushion. 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 replacement complete? | -- | Go to Step 42 | -- |
37 | Repair the open in CKT 900 (RED/WHT) 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 (RED/WHT). 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 replacement complete? | -- | Go to Step 42 | -- |
40 | Repair the open in CKT 952 (YEL/BLK) between the heated seat 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 |
