Reading and Clearing Diagnostic Trouble Codes

In order to enter the manual diagnostic modes of the memory seat/mirror module, turn the ignition switch to the OFF position. If the ignition is set to RUN or START while the module is in a diagnostic mode, the module exits the diagnostics and sounds 3 beeps.

The mode 1 diagnostics of the memory seat/mirror module is used in order to test the following inputs:
- Memory
- Seat
- Mirror switch

In order to enter mode 1 of the manual diagnostics, ensure that the memory seat diagnostic connector is grounded. You may tape the diagnostic connector into the harness. When the connector is grounded, the module beeps once in order to acknowledge entrance into the mode 1 diagnostics. Ensure that the connector remains grounded throughout the mode 1 diagnostics. If ground at the connector is lost for more than 5 seconds, the module exits the diagnostics and sounds 3 beeps. The following functions are disabled during mode 1:
- Memory
- Seat Mirror

In order to test the inputs, the memory, seat, or mirror switch is operated as if performing that function. Each time the memory seat/mirror module sees an input from a switch, the module beeps once. If a switch is operated and the module does not beep, the module did not receive the input. There may be a problem with the switch or wiring from the switch to the module.

The mode 2 diagnostics is used in order to test the seat and mirror position sensor inputs. In order to enter mode 2 of the manual diagnostics while in the mode 1 diagnostics, the ground is removed from the memory seat diagnostic connector. Then, ground is reapplied within 5 seconds. The module beeps twice in order to acknowledge that the module has entered the mode 2 diagnostics. If ground at the connector is lost for more than 5 seconds, the module exits the diagnostics and sounds 3 beeps. The seats and mirrors move during the mode 2 diagnostics. In order to test the inputs, one of the following components is operated to command the seat or mirror to move:
- Manual seat
- Mirror switch

The position sensor input for that direction is tested. For example, if the seat is commanded to move forward, the module tests the forward/back position sensor. If the module sounds a beep when a switch is being operated, the module senses a discontinuity in that direction's position sensor. This means that there may be a problem with the position sensor or the wiring from the switch to the position sensor. In order to exit the diagnostic mode, perform one of the following actions:
- Remove ground from the memory seat diagnostic connector for more than 5 seconds.
- Put the ignition in RUN or START.

When the module exits the diagnostic mode, the module sounds 3 beeps in order to acknowledge that the module is no longer in the diagnostic mode.