Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
SCHEMATIC REFERENCE: Heated Seats Schematics | ||||
1 | Did you review the heated seat operation and perform the necessary inspection? | -- | Go to Symptoms | |
2 | Check HTDST LR Fuse (LH) or HTDST RR Fuse (RH) for an open. Does the fuse test OK? | -- | ||
3 |
Does the scan tool indicate that the suspect switch is ON when pressed and OFF when not pressed? | -- | ||
4 |
Does the test lamp illuminate? | -- | ||
5 | Measure the voltage from the battery positive voltage circuit of the heated seat module to a good ground. Does the voltage measure within the specified range? | 9-16 V | ||
6 | Measure the voltage from the battery positive voltage circuit of the heated seat module to the ground circuit of the heated seat module. Does the voltage measure within the specified range? | 9-16 V | ||
7 |
Does the voltage measure within the specified range? | 9-16 V | ||
8 |
Does the resistance measure less than the specified value? | 10 ohms | ||
9 |
Does the resistance measure less than the specified value? | 10 ohms | ||
10 | Measure the resistance from the temperature sensor input circuit of the temperature sensor to the ground circuit of the temperature sensor. Important: If the resistance is measured with the seat still warm, the resistance may vary outside of the specified range since the thermistor resistance varies with temperature. Does the resistance measure within the specified value? | 850 - 1150 ohms | ||
11 |
Does the resistance measure less than the specified value? | 5 ohms | ||
12 | Test the heated seat switch input circuit between the door module and the heated seat switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
13 | Test the ground circuit between the heated seat switch and the door module for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
14 | Test the temperature sensor input circuit and the sensor ground circuit between the heated seat module and the heating element temperature sensor for a high resistance or an open. Refer to Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
15 | Test the heater control circuit and the controlled ground circuit between the heated seat module and the heated seat cushion heating element for a high resistance or an open. Refer to Refer to Circuit Testing and Wiring Repairs in wiring Systems. Did you find and correct the condition? | -- | ||
16 | Test the heater control circuit and the controlled ground circuit between the heated seat module and the heated seat back heating element for a high resistance or an open. Refer to Refer to Circuit Testing and Wiring Repairs in wiring Systems. Did you find and correct the condition? | -- | ||
17 | Test the heated seat switch input circuit between the heated seat module and the rear integration module (RIM) for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
18 | Inspect for poor connections at the harness connector of the heated seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
19 | Inspect for poor connections at the harness connector of the heated seat module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
20 | Inspect for poor connections at the harness connector of the heated seat back heating element. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
21 | Inspect for poor connections at the harness connectors of the heated seat cushion heating element and the temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
22 | Inspect for poor connections at the harness connector of the door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
23 | Inspect for poor connections at the harness connector of the rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
24 | Repair the short to ground in the battery positive voltage circuit of the heated seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
25 | Repair the open in the battery positive voltage circuit of the heated seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
26 | Repair the open in the IGN 3 voltage circuit of the heated seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
27 | Repair the open in the ground circuit of the heated seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
28 | Replace HTDST LR Fuse (LH) or HTDST RR Fuse (RH). Refer to Circuit Testing in Wiring Systems. Did you complete the replacement? | -- | -- | |
29 | Replace the heated seat switch. Refer to Rear Seat Heater Switch Replacement in Doors. Did you complete the replacement? | -- | -- | |
30 | Replace the heated seat module. Refer to Rear Seat Heater Control Module Replacement . Did you complete the replacement? | -- | -- | |
31 | Replace the heated seat back element. Refer to Rear Seat Back Cushion Cover and Pad Replacement . Did you complete the replacement? | -- | -- | |
32 | Replace the heated seat cushion heating element. Refer to Rear Seat Cushion Cover and Pad Replacement . Did you complete the replacement? | -- | -- | |
33 | Replace the door module. Refer to Door Control Module Replacement in Doors. Did you complete the replacement? | -- | -- | |
34 | Replace the rear integration module (RIM). Refer to Rear Integration Body Control Module Replacement in Body Control System. Did you complete the replacement? | -- | -- | |
35 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | |
