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 | Go to Symptoms - Seats |
2 |
Does the heated seat system operate normal? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 Seat and Passenger Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 21 | -- |
20 | Replace the seat back heater element. Refer to Driver Seat and 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 | Go to Symptoms - Seats |
2 |
Does the heated seat system operate normal? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Wiring Systems. 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 in Seat Belts. 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 |
