Power Seat Does Not Tilt Rearward (Chevy and GMC with Memory)
Power Seat Does Not Tilt Rearward (Chevy and GMC with Memory)
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Memory Seats Schematics
IMPORTANT:
This table assumes that all mechanical linkage and drivers are free from obstruction and not binding.
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| 1 | Did you review the power seats system Description and Operation and perform the necessary inspections? | - | Go to Step 2 | Go to Symptoms - Seats |
| 2 | Verify the fault is present. Does the system operate normally? |
- | Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS | Go to Step 3 |
| 3 | Does the rear vertical adjuster motor operate for approximately 1 revolution and stop? | - | Go to Step 4 | Go to Step 7 |
| 4 |
|
5 V | Go to Step 5 | Go to Step 13 |
| 5 |
|
5 V | Go to Step 6 | Go to Step 14 |
| 6 |
|
5 V | Go to Step 18 | Go to Step 15 |
| 7 |
|
- | Go to Step 8 | Go to Step 10 |
| 8 |
|
- | Go to Step 9 | Go to Step 11 |
| 9 |
|
- | Go to Step 17 | Go to Step 12 |
| 10 | Test the rear vertical up switch signal circuit for an open or short to ground. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 16 |
| 11 | Test the rear vertical down switch signal circuit for an open or short to ground. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 16 |
| 12 | Test the rear vertical motor control circuits for an open or short to ground. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 19 |
| 13 | Test the rear vertical motor position sensor 5-volt reference circuit for the following conditions:
Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 19 |
| 14 | Test the rear vertical motor position sensor signal circuit for the following conditions:
Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 19 |
| 15 | Test rear vertical motor position sensor low reference circuit for an open or short to voltage. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 19 |
| 16 | Inspect for poor connections at the power seat switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 20 |
| 17 | Inspect for poor connections at the rear vertical motor control circuit connector. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 21 |
| 18 | Inspect for poor connections at the rear vertical motor position sensor connector. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 21 |
| 19 | Inspect for poor connections at the memory seat module. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
- | Go to Step 23 | Go to Step 22 |
| 20 | Replace the power seat switch assembly. Refer to Seat Switch Replacement - Power Did you complete the replacement? |
- | Go to Step 23 | - |
| 21 | Replace the rear vertical adjuster motor. Refer to Seat Adjuster Motor Replacement - Front Did you complete the replacement? |
- | Go to Step 23 | - |
| 22 | Replace the memory seat module. Refer to Memory Seat Control Module Replacement . Did you complete the replacement? |
- | Go to Step 23 | - |
| 23 | Operate the system to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |