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 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 normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | 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 15 | ||||||
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 19 | Go to Step 16 | ||||||
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 17 | ||||||
7 | Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the heated seat module harness connector. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 18 | ||||||
8 |
Does the test lamp illuminate in the high and low switch positions? | -- | Go to Step 9 | Go to Step 10 | ||||||
9 |
Are the resistance measurements at or near the specified values? |
| Go to Step 12 | Go to Step 11 | ||||||
10 | Test the heated seat switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 27 | Go to Step 19 | ||||||
11 | Test the high/low switch signal circuit for the following conditions:
Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 27 | Go to Step 19 | ||||||
12 |
Is the resistance within the specified values? | 6-12 Kohms | Go to Step 13 | Go to Step 21 | ||||||
13 | Test the resistance through the seat cushion heater element. Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 14 | Go to Step 21 | ||||||
14 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 20 | Go to Step 22 | ||||||
15 | Repair the ignition voltage supply circuit to the heated seat switch for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 27 | -- | ||||||
16 | Repair the heated seat switch ground circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 27 | -- | ||||||
17 | Repair the battery voltage supply circuit to the heated seat module for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 27 | -- | ||||||
18 | Repair the heated seat module ground circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 27 | -- | ||||||
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 27 | Go to Step 23 | ||||||
20 | Inspect for poor connections at the heated seat 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 27 | Go to Step 24 | ||||||
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 27 | Go to Step 25 | ||||||
22 | Inspect for poor connections at the seat back 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 27 | Go to Step 26 | ||||||
23 | Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 27 | -- | ||||||
24 | Replace the heated seat module. Refer to Front Seat Heater Control Module Replacement . Is the repair complete? | -- | Go to Step 27 | -- | ||||||
25 | Replace the seat cushion heater element. Refer to Driver or Passenger Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 27 | -- | ||||||
26 | Replace the seat back heater element. Refer to Driver or Passenger Seat Back Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 27 | -- | ||||||
27 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 | ||||||
