Heated Seat Inoperative Impala
Step | Action | Values | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Driver Seat Schematics or 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 heated seat operate in low and high modes? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||
3 |
Important: The body control module (BCM) is programed to supply voltage to the heated seat switch only while the engine is running.
Does the test lamp illuminate in the LOW and HIGH switch positions? | -- | Go to Step 5 | Go to Step 4 | ||||||
4 |
Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 15 | ||||||
5 |
Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 6 | ||||||
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 16 | ||||||
7 | Connect a test lamp from the battery positive voltage supply circuit terminal to the ground circuit terminal in the heated seat relay connector. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 17 | ||||||
8 | Test the resistance from the heated seat thermistor signal circuit terminal to the ground circuit terminal in the heated seat relay harness connector. Is the resistance within the specified values? | 7K-11K ohms | Go to Step 9 | Go to Step 12 | ||||||
9 |
Is the resistance at or near the specified values? |
| Go to Step 24 | Go to Step 14 | ||||||
10 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 11 | Go to Step 22 | ||||||
11 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 18 | Go to Step 23 | ||||||
12 |
Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 21 | ||||||
13 | Test the heated seat switch signal circuit for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 19 | ||||||
14 | Test the high/low switch signal circuit in the seat harness 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 28 | Go to Step 19 | ||||||
15 | Test 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. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 26 | ||||||
16 | Repair the open or short to ground in the battery positive voltage supply circuit to the seat heater relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- | ||||||
17 | Repair the open or high resistance in the seat heater relay ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- | ||||||
18 | Repair the open or short to ground in the heater element supply or ground circuits in the seat harness. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- | ||||||
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 28 | Go to Step 20 | ||||||
20 | Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 28 | -- | ||||||
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 28 | Go to Step 22 | ||||||
22 |
Does the system operate normally? | -- | System OK | Go to Step 11 | ||||||
23 | Replace the seat back heater element. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 28 | -- | ||||||
24 | Inspect for poor connections at the heated seat relay. 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 28 | Go to Step 25 | ||||||
25 | Replace the heated seat relay. Refer to Relay Replacement in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- | ||||||
26 | Inspect for poor connections at the BCM. 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 28 | Go to Step 27 | ||||||
27 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Is the repair complete? | -- | Go to Step 28 | -- | ||||||
28 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||||
Heated Seat Inoperative Monte Carlo
Step | Action | Values | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Driver Seat Schematics or 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 heated seat operate in low and high modes? | -- | 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 properly? | -- | Go to Step 6 | Go to Step 4 | ||||||
4 |
Important: The body control module (BCM) is programed to supply voltage to the heated seat switch only while the engine is running.
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 17 | ||||||
5 | Connect the 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 22 | Go to Step 18 | ||||||
6 |
Does the test lamp illuminate? | -- | Go to Step 12 | Go to Step 7 | ||||||
7 |
Does the test lamp illuminate in the HIGH and LOW switch positions? | -- | Go to Step 8 | Go to Step 15 | ||||||
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 19 | ||||||
9 | Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the heated seat relay harness connector. Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 20 | ||||||
10 | Test the resistance from the heated seat thermistor signal circuit terminal to the ground circuit terminal in the heated seat relay harness connector. Is the resistance within the specified values? | 7K-11K ohms | Go to Step 11 | Go to Step 14 | ||||||
11 |
Is the resistance at or near the specified values? |
| Go to Step 27 | Go to Step 16 | ||||||
12 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 13 | Go to Step 25 | ||||||
13 |
Is the resistance within the specified values? | 0.5-2 ohms | Go to Step 21 | Go to Step 26 | ||||||
14 |
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 24 | ||||||
15 | Test the heated seat switch 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 31 | Go to Step 22 | ||||||
16 | Test the high/low switch signal 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 31 | Go to Step 22 | ||||||
17 | Test the ignition voltage 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 31 | Go to Step 29 | ||||||
18 | Repair the open or high resistance in heated seat switch ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
19 | Repair the open or short to ground in the battery positive voltage supply circuit to the seat heater relay. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
20 | Repair the open or high resistance in the seat heater relay ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
21 | Repair the open or short to ground in the heater element supply or ground circuits in the seat harness. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
22 | 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 31 | Go to Step 23 | ||||||
23 | Replace the heated seat switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 31 | -- | ||||||
24 | 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 31 | Go to Step 25 | ||||||
25 |
Does the system operate normally? | -- | System OK | Go to Step 13 | ||||||
26 | Replace the seat back heater element. Refer to Front Seat Heater Element Replacement . Is the repair complete? | -- | Go to Step 31 | -- | ||||||
27 | Inspect for poor connections at the heated seat relay. 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 31 | Go to Step 28 | ||||||
28 | Replace the heated seat relay. Refer to Relay Replacement in Wiring Systems. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
29 | Inspect for poor connections at the BCM. 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 31 | Go to Step 30 | ||||||
30 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Is the repair complete? | -- | Go to Step 31 | -- | ||||||
31 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||||
