Heated Seat Inoperative Driver
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Driver 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 normal? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Do the low and high switch indicators operate normal? | -- | Go to Step 6 | Go to Step 4 |
4 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 11 |
5 | Connect a test lamp from the ignition voltage supply circuit terminal to the ground circuit terminal in the heated seat switch harness connector. Does the test lamp illuminate? | -- | Go to Step 15 | Go to Step 12 |
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 13 |
7 | Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the C319 seat harness connector. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 14 |
8 |
Is the resistance at or near the specified values? | Hi 2.5K ohms Lo 4.9K ohms | Go to Step 10 | Go to Step 9 |
9 |
Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 15 |
10 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 16 | Go to Step 17 |
11 | Repair the open or short to ground in the ignition voltage supply circuit to the heated seat switch. Refer to Circuit Testing and to Wiring Repairs . Is the repair complete? | -- | Go to Step 21 | -- |
12 | Repair the open or high resistance in heated seat switch ground circuit. Refer to Circuit Testing and to Wiring Repairs . Is the repair complete? | -- | Go to Step 21 | -- |
13 | Repair the open or short to ground in the battery voltage supply circuit to the heated seat control module. Refer to Circuit Testing and to Wiring Repairs . Is the repair complete? | -- | Go to Step 21 | -- |
14 | Repair the open or high resistance in the heated seat control module ground circuit. Refer to Circuit Testing and to Wiring Repairs . Is the repair complete? | -- | Go to Step 21 | -- |
15 | Inspect for poor connections at the heated seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 18 |
16 | Inspect for poor connections at the seat cushion heater element. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 19 |
17 | Inspect for poor connections at the seat back heater element. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 20 |
18 | Replace the heated seat switch. Refer to Lumbar Switch Replacement . Is the repair complete? | -- | Go to Step 21 | -- |
19 | Replace the seat cushion heater element. Refer to Driver or Passenger Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 21 | -- |
20 | Replace the seat back heater element. Refer to Driver or Passenger Seat Back Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 21 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
Heated Seat Inoperative Passenger
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Passenger 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 normal? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Do the low and high switch indicators operate normal? | -- | Go to Step 7 | Go to Step 4 |
4 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 13 |
5 | Connect a test lamp from the ignition voltage supply circuit terminal to the ground circuit terminal in the heated seat switch harness connector. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 14 |
6 |
Does the test lamp go OFF when the seat belt is buckled? | -- | Go to Step 18 | Go to Step 15 |
7 |
Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 16 |
8 | Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the C318 seat harness connector. Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 17 |
9 |
Is the signal circuit voltage greater than the specified value in the Hi and Lo switch positions? | 7.5 V | Go to Step 12 | Go to Step 10 |
10 |
Is the resistance greater than the specified value? | 7K ohms | Go to Step 11 | Go to Step 19 |
11 |
Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 18 |
12 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 19 | Go to Step 20 |
13 | Repair the open or short to ground in the ignition voltage supply circuit to the heated seat switch. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | -- | Go to Step 25 | -- |
14 | Repair the open or high resistance in heated seat switch ground circuit. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | -- | Go to Step 25 | -- |
15 | Test the seat belt switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 24 |
16 | Repair the open or short to ground in the battery voltage supply circuit to the heated seat control module. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | -- | Go to Step 25 | -- |
17 | Repair the open or high resistance in the heated seat control module ground circuit. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | -- | Go to Step 25 | -- |
18 | Inspect for poor connections at 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 25 | Go to Step 21 |
19 | Inspect for poor connections at the seat cushion heater element. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 22 |
20 | Inspect for poor connections at 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 25 | Go to Step 23 |
21 | Replace the heated seat switch. Refer to Lumbar Switch Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
22 | Replace the seat cushion heater element. Refer to Driver or Passenger Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
23 | Replace the seat back heater element. Refer to Driver or Passenger Seat Back Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
24 | Replace the seat belt buckle. Refer to Front Seat Belt Buckle Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
25 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
