| Table 1: | Power Seat Inoperative-One |
Diagnostic Aids
Seat Adjustment Switch Test | ||
|---|---|---|
Switch Position | Switch Terminals | Value |
Position A | 10 and 5 | Continuity |
Position B | 7 and 5 | Continuity |
Position C | 9 and 5 | Continuity |
Position D | 8 and 5 | Continuity |
Position E | 6 and 5 | Continuity |
Position F | 3 and 5 | Continuity |
Position G | 2 and 5 | Continuity |
Position H | 4 and 5 | Continuity |
Switch in the neutral position | 1 and either 2-4 or 6-10 | Continuity |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Seats Schematics DEFINITION: This test is used by the technician to aid in the diagnosis of the seat adjustment switch when none of the switch functions operate. The test diagnoses the seat adjustment switch and associated power and ground circuits. | |||
1 | Did you perform the Diagnostic System Check-Vehicle? | Go to Step 2 | |
2 | Verify the fault is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Check the battery voltage. Refer to Measuring Voltage in Wiring Systems. Is the battery voltage more than 11.5 volts? | Go to Step 4 | Go to Battery Inspection/Test in Engine Electrical |
4 | Check the battery voltage supply circuit to the inoperative seat module with a test lamp connected to a known good ground. Refer to Measuring Voltage in Wiring Systems. Does the test lamp illuminate? | Go to Step 5 | Go to Step 10 |
5 | Ensure all seat ground points are secure and have good contact with the vehicle structure. Are all the ground points secure to the vehicle with good contact? | Go to Step 6 | Go to Step 12 |
6 | Check the voltage supply circuit to the inoperative seat switch assembly with a test lamp connected to a known good ground. Refer to Measuring Voltage in Wiring Systems. Does the test lamp illuminate? | Go to Step 7 | Go to Step 13 |
7 |
Does the driver seat adjustment switch test OK? | Go to Step 8 | Go to Step 14 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 11 |
9 | Replace the inoperative seat module. Did you complete the repair? | Go to Step 15 | -- |
10 | Repair an open in the battery voltage supply circuit between the vehicle battery and the inoperative seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
11 | Repair an open in the inoperative seat module ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
12 | Tighten all ground points. Did you complete the repair? | Go to Step 15 | -- |
13 | Repair an open in the positive voltage supply circuit between the seat switch and the seat module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
14 | Replace the inoperative seat switch. Refer to Power Seat Switch Replacement . Did you complete the repair? | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
