Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the Heated Seats Circuit Description and preform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 |
Does the heated seat operate properly in low and high? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Is the heated seat inoperative in both low and high modes? | -- | Go to Step 4 | Go to Step 6 |
4 |
Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 5 |
5 | Test and repair the heated seat system ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 6 |
6 |
Is voltage present in both switch positions? | -- | Go to Step 7 | Go to Step 8 |
7 | Test for voltage at the seat heater switch on/off signal circuit terminal in the control module connector. Is voltage present? | -- | Go to Step 11 | Go to Step 9 |
8 |
Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 10 |
9 |
Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 10 |
10 | Test and repair the voltage supply circuit to the seat heater switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 15 |
11 | Test the resistance to ground from the heated seat thermistor signal circuit terminal in the seat heater control module connector. Refer to Circuit Testing in Wiring Systems. Is the resistance greater than the specified value? | 5K ohms | Go to Step 12 | Go to Step 13 |
12 | Test the resistance to ground from the heated seat element voltage supply circuit terminal in the seat heater control module connector. Refer to Circuit Testing in Wiring Systems. Is the resistance less than the specified value? | 200 ohms | Go to Step 18 | Go to Step 14 |
13 | Test and repair the heated seat thermistor signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 16 |
14 | Test and repair the heater element voltage supply and ground circuits for an open or high resistance. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 19 | Go to Step 17 |
15 | Replace the seat heater switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
16 | Replace the heated seat thermistor. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
17 | Test continuity through the heated seat elements and replace as necessary. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
18 | Replace the seat heater control module. Refer to Front Seat Heater Control Module Replacement . Is the repair complete? | -- | Go to Step 19 | -- |
19 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
