Step | Action | Value(s) | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Was the entire Heated Seats System Check performed? | -- | Go to Step 2 | |||||||||
2 |
Does the test lamp light? | -- | Go to Step 3 | Go to Step 16 | ||||||||
3 |
Does the test lamp light? | -- | Go to Step 4 | Go to Step 17 | ||||||||
4 | Connect a test lamp from the heated seat module connector C1 cavity B (RED) to cavity E (BLK) (LH) or cavity E ( BLK/WHT) (RH). Does the test lamp light? | -- | Go to Step 5 | Go to Step 18 | ||||||||
5 |
Is the resistance less than the specified value? | 5ohms | Go to Step 9 | Go to Step 6 | ||||||||
6 | Test for an open in CKT 1462 (LT BLU) (LH) or CKT 1505 (LT BLU/BLK) (RH) between the heated seat module and the appropriate component:
Refer to Testing for Continuity in Wiring Systems. Is CKT 1462 or CKT 1505 OK? | -- | Go to Step 7 | Go to Step 25 | ||||||||
7 |
Refer to Testing for Continuity in Wiring Systems. Is CKT 150 or CKT 151 OK? | -- | Go to Step 8 | Go to Step 25 | ||||||||
8 | Replace the suspect switch:
Is the switch replacement complete? | -- | -- | |||||||||
9 |
Is the resistance less than the specified value? | 10ohms | Go to Step 10 | Go to Step 19 | ||||||||
10 | Connect a DMM from the heated seat module connector C3 cavity A (BLK) to ground. Is the resistance less than the specified value? | 5ohms | Go to Step 20 | Go to Step 11 | ||||||||
11 | With the seat at room temperature, connect a DMM from the heated seat module connector C3 cavity C (BLK) to cavity D (BLK). Important: : If the resistance is measured with the seat still warm, the resistance may vary outside of the specified range since the thermistor resistance may vary outside of the specified range since the thermistor resistance varies with temperature. Is the resistance within the specified range? | 850-1150ohms | Go to Step 12 | Go to Step 19 | ||||||||
12 | Connect a DMM from the heated seat module connector C3 cavity C (BLK) to ground. Is the resistance less than the specified value? | 5ohms | Go to Step 20 | Go to Step 13 | ||||||||
13 | Connect a DMM from the heated seat module connector C2 cavity A (BLK) to cavity B (BLK). Is the resistance less than the specified value? | 10ohms | Go to Step 14 | Go to Step 21 | ||||||||
14 | Connect a DMM from the heated seat module connector C2 cavity A (BLK) to ground. Is the resistance less than the specified value? | 5ohms | Go to Step 22 | Go to Step 15 | ||||||||
15 | Replace the heated seat module. Is the heated seat module replacement complete? | -- | -- | |||||||||
16 | Repair the open in CKT 742 (RED) between S362 and the heated seat module. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- | |||||||||
17 | Repair the open in CKT 41 (BRN) between S365 and the heated seat module. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- | |||||||||
18 | Repair the open in CKT 150 (BLK) between the heated seat module and S290 (LH) or CKT 151 (BLK/WHT) between the heated seat module and S212 (RH). Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- | |||||||||
19 | Test for an open in the heated seat cushion wiring. Refer to Testing for Continuity in Wiring Systems. Is the wiring OK? | -- | Go to Step 23 | Go to Step 25 | ||||||||
20 | Test for a short to ground in the heated seat cushion wiring. Refer to Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 23 | Go to Step 25 | ||||||||
21 | Test for an open in the heated seat back wiring. Refer to Testing for Continuity in Wiring Systems. Is the wiring OK? | -- | Go to Step 24 | Go to Step 25 | ||||||||
22 | Test for a short to ground in the heated seat back wiring. Refer to Testing for Short to Ground in Wiring Systems. Is the wiring OK? | -- | Go to Step 24 | Go to Step 25 | ||||||||
23 | Replace the heated seat cushion. Refer to Front Seat Heater Element Replacement . Is the heated seat cushion replacement complete? | -- | -- | |||||||||
24 | Replace the heated seat back. Refer to Front Seat Heater Element Replacement . Is the heated seat back replacement complete? | -- | -- | |||||||||
25 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete? | -- | -- |
