For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Power Seats Schematics
1 | Did you review the Power Seat System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Seats
2 |

1. Verify that the power seat inoperative complaint is present.
2. Attempt to operate all of the power seat motors through their full range of adjustment.

Does the power seat system operate as described in the system description and operation?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3 | Are all of the power seat motors inoperative? | Go to Step 4 | Go to Step 6
4 |

1. Disconnect the seat adjuster switch.
2. Connect a test lamp from the battery positive voltage circuit of the switch connector to a good ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 10

5 | Connect a test lamp between the battery positive voltage circuit of the switch connector and the ground circuit of the switch connector. Does the test lamp illuminate? | Go to Step 9 | Go to Step 11
6 |

1. Disconnect the inoperative seat motor.
2. Connect a test lamp between the motor control circuits of the harness connector.
3. Operate the appropriate seat switch in both directions.

Does the test lamp illuminate in both directions?

Go to Step 8

Go to Step 7

7 | Test the motor control circuits for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 9
8 | Inspect for poor connections at the harness connector of the inoperative seat motor. 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 14 | Go to Step 13
9 | Inspect for poor connections at the harness connector of the seat adjuster 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 14 | Go to Step 12
10 | Repair the short to ground or open in the battery positive voltage circuit of the seat adjuster switch. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | --
11 | Repair the open in the ground circuit of the seat adjuster switch. Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | --
12 | Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | Go to Step 14 | --
13 | Replace the seat motor Refer to Front Seat Adjuster Motor Replacement . Is the repair complete? | Go to Step 14 | --
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2