For 1990-2009 cars

### Circuit Description

An internal failure within the driver seat adjuster memory module will set DTC 55.

### Conditions for Setting the DTC

Driver seat adjuster memory module hardware failure (EEPROM, RAM, or ROM are defective).

### Action Taken When the DTC Sets

DTC 55 will set and the driver seat adjuster memory module will become disabled.

### Conditions for Clearing the DTC

1. DTC 55 will clear when the fault is no longer present.
2. DTC 55 can be cleared by using the scan tool.

### Diagnostic Aids

Replace the driver seat adjuster memory module.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Power Seats System Check performed? | -- | Go to Step 2 | Go to Power Seats System Check
2 | Replace and program the driver seat adjuster memory module. Refer to Memory Seat Control Module Replacement and Memory Seat Operation . Is the repair complete? | -- | Go to Step 3 | --
3 |

1. Operate the system in order to verify the repair.
2. Use the scan tool to check for any DTCs.

Are any DTCs present?

--

Go to Power Seats System Check

System OK