Step | Action | Values | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Heated/Cooled Seat Schematics Connector End View Reference: Power Seat Connector End Views | ||||||||||
1 | Did you review the Heated Seat System Description and Operation and perform the necessary inspections? | -- | Go to Step 2 | |||||||
2 |
Does the Heated Seat System operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||
3 | Does the heated seat switch indicator operate normally? | -- | Go to Step 6 | Go to Step 4 | ||||||
4 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 21 | ||||||
5 | Connect a test lamp between the ignition voltage circuit and the ground circuit in the heated seat switch harness connector. Does the test lamp illuminate? | -- | Go to Step 25 | Go to Step 22 | ||||||
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 23 | ||||||
7 | Connect a test lamp between the battery positive voltage circuit and the ground circuit in the heated seat module harness connector. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 24 | ||||||
8 |
Does the test lamp illuminate in the high and low switch positions? | -- | Go to Step 9 | Go to Step 10 | ||||||
9 |
Does the resistance measure within the specified range? | High 100-1000 Low 2.0-3.0 K | Go to Step 12 | Go to Step 11 | ||||||
10 | Test the heated seat switch signal circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 25 | ||||||
11 | Test the heated seat high/low signal circuit for the following conditions:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 25 | ||||||
12 | Measure the resistance between the heated seat element temperature signal circuit and the ground circuit in the heated seat module harness connector. Does the resistance measure within the specified range? | 6-12 KΩ | Go to Step 13 | Go to Step 16 | ||||||
13 | Measure the resistance between the heated seat element supply voltage circuit and the ground circuit in the heated seat module harness connector. Does the resistance measure within the specified range? | 0.5-5 Ω | Go to Step 28 | Go to Step 14 | ||||||
14 |
Does the resistance measure within the specified range? | 0.5-2 Ω | Go to Step 15 | Go to Step 26 | ||||||
15 |
Does the resistance measure within the specified range? | 0.5-2 Ω | Go to Step 18 | Go to Step 27 | ||||||
16 | Test the signal circuit between the heated seat module and the heated seat temperature sensor for the following conditions:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 17 | ||||||
17 | Test the ground circuit between the heated seat temperature sensor and the heated seat module for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 26 | ||||||
18 | Test the supply voltage circuit between the heated seat module and the seat cushion heating element for the following conditions:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 19 | ||||||
19 | Test the supply voltage circuit between the seat cushion and the seat back heating element for the following conditions:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 20 | ||||||
20 | Repair the high resistance or open in the ground circuit between the seat back heating element and the heated seat module. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | -- | ||||||
21 | Repair the short to ground or open in the ignition voltage circuit of the heated seat switch. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 33 | -- | ||||||
22 | Repair the high resistance or open in the ground circuit heated seat switch. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 33 | -- | ||||||
23 | Repair the short to ground or open in the battery positive voltage circuit of the heated seat module. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 33 | -- | ||||||
24 | Repair the high resistance or open in the ground circuit of the heated seat module. Refer to Wiring Repairs . Did you complete the repair? | -- | Go to Step 33 | -- | ||||||
25 | Inspect for poor connections at the harness connector of the heated seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 29 | ||||||
26 | Inspect for poor connections at the harness connector of the seat cushion heater 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 33 | Go to Step 31 | ||||||
27 | Inspect for poor connections at the harness connector of the seat back heater element. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 32 | ||||||
28 | Inspect for poor connections at the harness connector of the heated seat module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 30 | ||||||
29 | Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 33 | -- | ||||||
30 | Replace the heated seat module. Refer to Front Seat Heater Control Module Replacement . Is the repair complete? | -- | Go to Step 33 | -- | ||||||
31 | Replace the seat cushion heater element/temperature sensor. Refer to Driver or Passenger Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 33 | -- | ||||||
32 | Replace the seat back heater element. Refer to Driver or Passenger Seat Back Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 33 | -- | ||||||
33 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 | ||||||
