Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Heated Seats Schematics Connector End View Reference: Power Seat Connector End Views | ||||
1 | Did you review the Heated Seats Description and Operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 | Operate the rear heated seat system. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 11 |
4 | Connect a test lamp test from the battery voltage supply circuit terminal in the heated seat control module harness connector to ground. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 12 |
5 | Connect a test lamp from battery voltage to the ground circuit terminal in the heated seat control module harness connector. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 13 |
6 |
Does the test lamp illuminate only while the heated seat switch is pressed? | -- | Go to Step 7 | Go to Step 14 |
7 | Connect a fused jumper wire from battery voltage to the high indicator control circuit terminal in the heated seat control module harness connector. Does the heated seat switch high indicator illuminate? | -- | Go to Step 8 | Go to Step 16 |
8 | Connect a fused jumper wire from battery voltage to the low indicator control circuit terminal in the heated seat control module harness connector. Does the heated seat switch low indicator illuminate? | -- | Go to Step 9 | Go to Step 17 |
9 | Test the resistance through the heated seat thermistor from the heated seat control module harness connector. Refer to Circuit Testing in Wiring Systems. Is the resistance within the specified values? | 7K-12K ohms | Go to Step 10 | Go to Step 18 |
10 | Test the resistance through the seat cushion heater element from the heated seat control module harness connector. Is the resistance less than the specified value? | 5 ohms | Go to Step 23 | Go to Step 18 |
11 | Repair the ignition voltage supply circuit to the heated seat control module for an open or short to ground. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- |
12 | Repair the battery voltage supply circuit to the heated seat control module for an open or short to ground. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- |
13 | Repair the heated seat control module ground circuit for an open or high resistance. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 25 | -- |
14 |
Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 15 |
15 | Test the heated seat switch ground circuit for an open or high resistance. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 19 |
16 |
Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 19 |
17 |
Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 19 |
18 |
Did you find and correct the condition? | -- | Go to Step 25 | Go to Step 21 |
19 | 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 25 | Go to Step 20 |
20 | Replace the heated seat switch. Refer to Rear Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
21 | Inspect for poor connections at the seat cushion heater element connector. 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 25 | Go to Step 22 |
22 | Replace the seat cushion heater element. Refer to Rear Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 25 | -- |
23 | Inspect for poor connections at the heated seat control module. 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 25 | Go to Step 24 |
24 | Replace the heated seat control module. 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 |
