Step | Action | Values | Yes | No | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Driver Seat Schematics or Passenger 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 7 | ||||||||||
3 | Are both heated seats inoperative? | -- | Go to Step 4 | Go to Step 7 | ||||||||||
4 |
Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 5 | ||||||||||
5 | Test for a short to ground or an open in the heated seat relay switched voltage supply circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 29 | Go to Step 28 | ||||||||||
6 |
Does the heated seat relay turn On and Off with each command? | -- | Go to Step 20 | Go to Step 21 | ||||||||||
7 |
Does the heated seat relay parameter momentarily display On then Off? | -- | Go to Step 16 | Go to Step 8 | ||||||||||
8 | Does the heated seat relay parameter display On? | -- | Go to Step 9 | Go to Step 20 | ||||||||||
9 |
Does the test lamp illuminate? | -- | Go to Step 12 | Go to Step 10 | ||||||||||
10 | 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 11 | Go to Step 22 | ||||||||||
11 |
Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 21 | ||||||||||
12 |
Does the resistance measure less than the specified value? | 5 ohms | Go to Step 13 | Go to Step 18 | ||||||||||
13 |
Does the resistance measure less than the specified value? | 5 ohms | Go to Step 14 | Go to Step 19 | ||||||||||
14 | 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 29 | Go to Step 15 | ||||||||||
15 | 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 29 | Go to Step 23 | ||||||||||
16 | 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 29 | Go to Step 17 | ||||||||||
17 | 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 29 | Go to Step 24 | ||||||||||
18 | 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 29 | Go to Step 25 | ||||||||||
19 | 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 29 | Go to Step 25 | ||||||||||
20 | 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 29 | Go to Step 26 | ||||||||||
21 | 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 29 | Go to Step 27 | ||||||||||
22 | 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 29 | -- | ||||||||||
23 | Repair the open in the ground circuit of the seat heating elements. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 29 | -- | ||||||||||
24 | Replace the heated seat relay. Refer to Front Seat Heater Relay Replacement . Did you complete the replacement? | -- | Go to Step 29 | -- | ||||||||||
25 | Replace the inoperative seat cushion heating element/temperature sensor or seat back heating element. Refer to Driver or Passenger Seat Cushion Heater Replacement . Did you complete the replacement? | -- | Go to Step 29 | -- | ||||||||||
26 | Replace the HVAC control module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 29 | -- | ||||||||||
27 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 29 | -- | ||||||||||
28 | Replace the instrument panel (I/P) fuse block. Refer to Instrument Panel Electrical Center or Junction Block Replacement . Did you complete the repair? | -- | Go to Step 29 | -- | ||||||||||
29 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 | ||||||||||
