Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Heated/Cooled Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: This test assumes that Load Shed Level 1 or Level 2 Heated Seats is not enabled. | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 | Verify that the Heated Seat Inoperative complaint is present. Does the heated seat system operate as described in the system description and operation? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 |
Does the Heated Seat Relay parameter momentarily display On then Off? | -- | Go to Step 12 | Go to Step 4 |
4 | Does the Heated Seat Relay parameter display On? | -- | Go to Step 5 | Go to Step 16 |
5 |
Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 6 |
6 | Connect a test lamp from the battery positive voltage circuit of the heated seat relay to ground. Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 18 |
7 |
Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 17 |
8 |
Does the resistance measure less than the specified value? | 5 ohms | Go to Step 9 | Go to Step 14 |
9 |
Does the resistance measure less than the specified value? | 5 ohms | Go to Step 10 | Go to Step 15 |
10 | Test the heated seat element supply voltage circuit between the heated seat relay and the seat cushion heating element for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 11 |
11 | Test the heated seat element supply voltage circuit between the seat cushion and the seat back heating element for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 19 |
12 | Test the heated seat relay control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 13 |
13 | Inspect for poor connections at the harness connector of the heated seat relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 20 |
14 | Inspect for poor connections at the harness connector of the heated seat cushion heating element/temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 21 |
15 | Inspect for poor connections at the harness connector of the seat back heating element. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 21 |
16 | Inspect for poor connections at the harness connector of the HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 22 |
17 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 23 |
18 | Repair the short to ground or open in the battery positive voltage circuit of the heated seat relay. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 24 | -- |
19 | Repair the open in the ground circuit of the seat heating elements. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 24 | -- |
20 | Replace the heated seat relay. Refer to Front Seat Heater Relay Replacement . Did you complete the replacement? | -- | Go to Step 24 | -- |
21 | Replace the appropriate seat cushion heating element/temperature sensor or seat back heating element. Refer to Driver or Passenger Seat Back Cushion Heater Replacement and to Driver or Passenger Seat Cushion Heater Replacement . Did you complete the replacement? | -- | Go to Step 24 | -- |
22 | Replace the HVAC control module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 24 | -- |
23 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 24 | -- |
24 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
