Power Seat Does Not Move Forward/Rearward Escalade with Memory
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Memory Seats Schematics Important: This table assumes that all mechanical linkage and drivers are free from obstruction and are not binding. This table also assumes that all other directions are operational. | |||
1 | Did you perform the power seat diagnostic system check? | Go to Step 2 | |
2 | Attempt to operate the power seat horizontal adjustment in both directions. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the scan tool display the correct switch status in relation to the actual switch position? | Go to Step 11 | Go to Step 4 |
4 | Disconnect the power seat switch connector. Does the scan tool display the horizontal position switch status as Inactive? | Go to Step 5 | Go to Step 7 |
5 | Connect a 3 amp fused jumper wire from battery positive voltage to the horizontal forward switch signal circuit terminal in the power seat switch harness connector. Does the scan tool display the horizontal position switch status as Forward? | Go to Step 6 | Go to Step 8 |
6 | Connect a 3 amp fused jumper wire from battery positive voltage to the horizontal rearward switch signal circuit terminal in the power seat switch harness connector. Does the scan tool display the horizontal position switch status as Back? | Go to Step 10 | Go to Step 9 |
7 | Test the active horizontal switch signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11 |
8 | Test the horizontal forward switch signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11 |
9 | Test the horizontal rearward switch signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11 |
10 | Inspect for poor connections at the harness connector of the power seat 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 |
11 | Inspect for poor connections at the harness connector of the memory seat module. 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 |
12 | Replace the power seat switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | Go to Step 14 | -- |
13 | Replace the memory seat module. Refer to Memory Seat Control Module Replacement . Did you complete 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 |
Power Seat Does Not Move Forward/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. | ||||||||||
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 Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||
3 | Does the horizontal adjuster motor operate for approximately 1 revolution and stop? | -- | Go to Step 4 | Go to Step 7 | ||||||
4 |
Is the voltage at or near the specified value? | 5 V | Go to Step 5 | Go to Step 13 | ||||||
5 |
Is the voltage at or near the specified value? | 5 V | Go to Step 6 | Go to Step 14 | ||||||
6 |
Is the voltage at or near the specified value? | 5 V | Go to Step 18 | Go to Step 15 | ||||||
7 |
Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 10 | ||||||
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 11 | ||||||
9 |
Does the test lamp illuminate when the switch is activated in both directions? | -- | Go to Step 17 | Go to Step 12 | ||||||
10 | Test the horizontal forward switch signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 16 | ||||||
11 | Test the horizontal rearward switch signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 16 | ||||||
12 | Test the horizontal motor control circuits for an open or short to ground. Refer to Circuit Testing and Wiring Repairs and in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 19 | ||||||
13 | Test the horizontal motor position sensor 5-volt reference circuit for the following conditions:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 19 | ||||||
14 | Test the horizontal motor position sensor signal circuit for the following conditions:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 19 | ||||||
15 | Test horizontal motor position sensor low reference circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. 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 Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 20 | ||||||
17 | Inspect for poor connections at the horizontal motor control circuit connector. 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 23 | Go to Step 21 | ||||||
18 | Inspect for poor connections at the horizontal motor position sensor connector. 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 23 | Go to Step 21 | ||||||
19 | Inspect for poor connections at the memory seat module. 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 23 | Go to Step 22 | ||||||
20 | Replace the power seat switch assembly. Refer to Power Seat Switch Replacement Did you complete the replacement? | -- | Go to Step 23 | -- | ||||||
21 | Replace the horizontal adjuster motor. Refer to Front Seat Adjuster Motor Replacement 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 | ||||||
Power Seat Does Not Move Forward/Rearward w/o Memory
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Seats Schematics Important: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. | |||
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 | Operate the power seat in all directions. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test lamp illuminate when the switch is activated in both directions? | Go to Step 6 | Go to Step 4 |
4 | Test the horizontal motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
6 | Inspect for poor connections at the harness connector of the horizontal motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
7 | Replace the horizontal adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Did you complete the replacement? | Go to Step 9 | -- |
8 | Replace the power seat switch. Refer to Power Seat Switch Replacement . Did you complete the replacement? | Go to Step 9 | -- |
9 | Operate the system to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
