Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: One or more of the power seat functions are inoperative. | |||
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 |
Does the power seat system operate as described in the system description and operation? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Are all of the power seat motors inoperative? | Go to Step 4 | Go to Step 6 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 10 |
5 | Connect a test lamp from the battery positive voltage circuit of the switch connector to the ground circuit of the switch connector. Does the test light illuminate? | Go to Step 9 | Go to Step 11 |
6 |
Does the test light 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 . Did you find and correct the condition? | Go to Step 14 | Go to Step 9 |
8 | Inspect for poor connections at harness connector of the inoperative seat motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . 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 . 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 Wiring Repairs or Connector Repairs . Is the trouble corrected? | Go to Step 14 | -- |
11 | Repair the open in the ground circuit of the seat adjuster switch. Refer to Wiring Repairs or Connector Repairs . Did you complete the repair? | Go to Step 14 | -- |
12 | Replace the seat adjuster switch . Refer to Front Seat Adjuster Replacement . Have you finished the replacement? | Go to Step 14 | -- |
13 | Replace the seat motor. Refer to Front Seat Adjuster Replacement . Have you finished the replacement? | Go to Step 14 | -- |
14 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
The memory seat module (MSM) is also referenced as the driver position module (DPM) for this vehicle.
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: One or more of the power seat functions are inoperative. | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Does the power seat system operate as described in the system description and operation? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Are all of the power seat motors inoperative? | Go to Step 4 | Go to Step 8 |
4 | Probe the battery positive voltage circuit of the memory seat module connector C1 Pin-B with a test lamp that is connected to a good ground. Does the test light illuminate? | Go to Step 5 | Go to Step 16 |
5 | Connect the test lamp between the battery positive voltage circuit and the ground circuit of the memory seat module connector C1. Does the test lamp illuminate? | Go to Step 6 | Go to Step 17 |
6 | Probe the battery positive voltage circuit of the seat adjuster switch with a test lamp that is connected to a good ground. Does the test light illuminate? | Go to Step 7 | Go to Step 18 |
7 |
Does the test light illuminate? | Go to Step 15 | Go to Step 14 |
8 |
Does the seat switch parameters change state in both directions? | Go to Step 10 | Go to Step 9 |
Does the seat parameter change state? | Go to Step 14 | Go to Step 11 | |
10 |
Does the test light illuminate in both directions? | Go to Step 13 | Go to Step 12 |
11 | Test the suspect switch signal circuit between the seat adjuster switch and the memory seat module for an open. Refer to Circuit Testing and Wiring Repairs or Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
12 | Test the motor control circuits between the memory seat module and the inoperative seat motor for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs or Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
13 | 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 . Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
14 | 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 . Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
15 | Inspect for poor connections at the harness connector of the memory seat module (MSM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
16 | Repair the short to ground or open in the battery positive circuit of the memory seat module. Refer to Wiring Repairs or Connector Repairs . Did you find and correct the condition? | Go to Step 22 | -- |
17 | Repair the open in the ground circuit of the memory seat module. Refer to Wiring Repairs or Connector Repairs . Did you find and correct the condition? | Go to Step 22 | -- |
18 | Repair the open in the battery positive voltage circuit of the seat adjuster switch. Refer to Wiring Repairs or Connector Repairs . Did you find and correct the condition? | Go to Step 22 | -- |
19 | Replace the seat adjuster switch. Refer to Front Seat Adjuster Replacement . Have you finished the replacement? | Go to Step 22 | -- |
20 | Replace the inoperative seat motor. Refer to Front Seat Adjuster Replacement . Have you finished the replacement? | Go to Step 22 | -- |
21 | Replace the MSM. Refer to Control Module References for replacement, setup and programming. Have you finished the replacement? | Go to Step 22 | -- |
22 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |