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 17 | ||||
3 |
Is the voltage within the specified range? | 10-15 V | Go to Step 4 | Go to Step 18 | ||||
4 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 5 | Go to Step 19 | ||||
5 | Connect a J 39200 from the appropriate heated seat module connector C1 cavity B (ORN) to cavity H (YEL). Is the voltage within the specified range? | 10-15 V | Go to Step 6 | Go to Step 26 | ||||
6 |
Is the resistance less than the specified value? | 5 ohms | Go to Step 10 | Go to Step 7 | ||||
7 | Test the appropriate circuit for an open:
Refer to Testing for Continuity in Wiring Systems. Is the circuit OK? | -- | Go to Step 8 | Go to Step 28 | ||||
8 | Test CKT 450 (BLK) for an open between the appropriate heated seat switch and S217. Refer to Testing for Continuity in Wiring Systems. Is there an open in CKT 450? | -- | Go to Step 28 | Go to Step 9 | ||||
9 | Replace the suspect heated seat switch. Did you complete the repair? | -- | Go to Step 28 | -- | ||||
10 |
Is the resistance less than the specified value? | 10 ohms | Go to Step 11 | Go to Step 20 | ||||
11 | Connect a J 39200 from the appropriate heated seat module connector C2 cavity A to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 21 | Go to Step 12 | ||||
12 |
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 J 39200 from the appropriate heated seat module connector C2 cavity C to cavity D. Is the resistance within the specified range? | 850-1150 ohms | Go to Step 13 | Go to Step 20 | ||||
13 | Connect a J 39200 from the appropriate heated seat module connector C2 cavity C to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 21 | Go to Step 14 | ||||
14 | Connect a J 39200 from the appropriate heated seat module connector C3 cavity A to cavity B. Is the resistance less than the specified value? | 10 ohms | Go to Step 15 | Go to Step 22 | ||||
15 | Connect a J 39200 from the appropriate heated seat module connector C2 cavity A to ground. Is the resistance less than the specified value? | 5 ohms | Go to Step 23 | Go to Step 16 | ||||
16 | Replace the suspect heated seat module. Refer to Heater Module Replacement . Is the repair complete? | -- | Go to Step 29 | -- | ||||
17 | Repair the open or short to ground in the appropriate circuit between the rear fuse block and the heated seat module:
Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 29 | -- | ||||
18 | Repair the open or short to ground in CKT 241 (BRN) between the rear fuse block and the heated seat module. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 29 | -- | ||||
19 | Repair the open in CKT 450 (BLK) between the heated seat module and G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 29 | -- | ||||
20 | Test the appropriate seat cushion heating element wiring for an open. Refer to Testing for Continuity in Wiring Systems. Is there an open in the seat cushion heating element? | -- | Go to Step 28 | Go to Step 24 | ||||
21 | Test the appropriate seat cushion element wiring for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Is there a short to ground in the seat cushion heating element? | -- | Go to Step 28 | Go to Step 24 | ||||
22 | Test the appropriate seat back heating element for an open. Refer to Testing for Continuity in Wiring Systems. Is there an open in the seat back heating element? | -- | Go to Step 28 | Go to Step 25 | ||||
23 | Test the appropriate seat back heating element wiring for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Is there a short to ground in the seat back heating element wiring? | -- | Go to Step 28 | Go to Step 25 | ||||
24 | Replace the suspect seat cushion heating element. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 29 | -- | ||||
25 | Replace the suspect seat back heating element. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 29 | -- | ||||
26 | Test CKT 182 (YEL) for a short to ground. Refer to Testing for Short to Ground in Wiring Systems. Is there a short to ground in CKT 182? | -- | Go to Step 28 | Go to Step 27 | ||||
27 | Replace the body control module (SBM). Refer to Body Control Module Replacement in Body Control Systems. Is the repair complete? | -- | Go to Step 29 | -- | ||||
28 | Repair the faulty wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 29 | -- | ||||
29 | Perform the Heated Seats System Check. Refer to Heated Seats System Check . Was the Heated Seats System Check performed? | -- | System OK | -- |