Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms - Seats |
2 |
Do the rear heated seats operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are both of the rear heated seats inoperative? | -- | Go to Step 4 | Go to Step 7 |
4 | Test and repair for an open or high resistance in the battery voltage circuit. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 5 |
5 | Test and repair for an open or high resistance in the ignition voltage circuit. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 6 |
6 | Test and repair for an open or high resistance in the rear heated seats ground circuit. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 7 |
7 | Are both the seat cushion and the seat back cushion heaters inoperative? | -- | Go to Step 8 | Go to Step 13 |
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 10 |
9 | Connect the test lamp across the rear seat cushion heater harness connector terminals. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 24 | Go to Step 19 |
10 |
Does the test lamp illuminate? | -- | Go to Step 15 | Go to Step 11 |
11 | Test and repair for an open or high resistance in the rear seat heater relay control circuit. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 12 |
12 |
Does the test lamp illuminate? | -- | Go to Step 26 | Go to Step 20 |
13 | Is the rear seat cushion inoperative only? | -- | Go to Step 24 | Go to Step 14 |
14 |
Does the test lamp illuminate? | -- | Go to Step 25 | Go to Step 24 |
15 | Connect a test lamp from the ignition voltage circuit terminal in the heater relay connector to ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 16 | Go to Step 21 |
16 | Connect a test lamp from the battery voltage circuit terminal in the heater relay connector to ground. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 17 | Go to Step 22 |
17 | Connect a test lamp from the battery voltage circuit terminal in the heater relay connector to the ground circuit terminal. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | -- | Go to Step 18 | Go to Step 23 |
18 | Test and repair for an open or high resistance in the rear seat cushion heater control circuit. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 27 |
19 | Repair the open or high resistance in the rear seat cushion heater ground circuit. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- |
20 | Repair the open or high resistance in the rear seat heater switch ignition voltage circuit. Refer to Wiring Repairs or Connector Repairs in Wiring System Is the repair complete? | -- | Go to Step 28 | -- |
21 | Repair the open or high resistance in the rear seat heater relay ignition voltage circuit. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- |
22 | Repair the open or high resistance in the rear seat heater relay battery voltage circuit. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- |
23 | Repair the open or high resistance in the rear seat heater relay ground circuit. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 28 | -- |
24 | Replace the rear seat cushion heater. Refer to Rear Seat Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 28 | -- |
25 | Replace the rear seat back cushion heater. Refer to Rear Seat Back Cushion Heater Replacement . Is the repair complete? | -- | Go to Step 28 | -- |
26 | Replace the rear seat heater switch. Refer to Rear Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 28 | -- |
27 | Replace the rear seat cushion heater relay. Refer to Rear Seat Cushion Heater Relay Replacement . 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 |
