Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Driver Seat Schematics , Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the scan tool display On while the switch is in the high and low positions? | -- | Go to Step 4 | Go to Step 5 |
4 |
Is the Seat Heat Sensor parameter greater than the specified value? | 1 V | Go to Step 7 | Go to Step 6 |
5 |
Is the voltage at or near the specified value? | 5 V | Go to Step 10 | Go to Step 9 |
6 |
Is the resistance within the specified values? | 3K-11K ohms | Go to Step 11 | Go to Step 15 |
7 |
Is the resistance within the specified values? | 2-4 ohms | Go to Step 12 | Go to Step 8 |
8 |
Is the resistance within the specified values? | 1-2 ohms | Go to Step 15 | Go to Step 16 |
9 | Test the 5-volt supply circuit to the heated seat switch for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 14 |
10 | Test the heated seat switch high/low signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 13 |
11 | Test the seat heat sensor low reference circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 14 |
12 | Test the seat heater element voltage supply and control circuits in the seat harness for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 14 |
13 | 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 in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 17 |
14 | Inspect for poor connections at the harness connector of the seat module. 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 21 | Go to Step 18 |
15 | Inspect for poor connections at the harness connector of 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 21 | Go to Step 19 |
16 | 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 in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 21 | Go to Step 20 |
17 | Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 21 | -- |
18 | Replace the driver seat module (DSM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. 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 2 |
