Test C: Adjustable Brake Pedal Does Not Operate Correctly - Using the Memory Set Switch or the Remote Transmitter

Pinpoint Test C: Adjustable Brake Pedal Does Not Operate Correctly - Using the Memory SET Switch or the Remote Transmitter
Refer to Adjustable Pedals for schematic and connector information.

Normal Operation
When the desired memory position is selected using the memory switch or the remote transmitter, the driver seat module (DSM) sends voltage to the adjustable pedal motor along circuit CPP09 (VT/OG) to move the pedal forward and along CPP10 (BN/BU) to move the pedal rearward.

When voltage is sent to the motor along circuit CPP09 (VT/OG), it returns to the DSM along CPP10 (BN/BU). Likewise, when the voltage is sent to the motor along circuit CPP10 (BN/BU), it returns to the DSM along circuit CPP09 (VT/OG).

The DSM uses a Hall-effect switch attached to the pedal motor to identify the current pedal position.

The DSM sends a reference voltage along circuit RPP06 (GN), through the Hall-effect switch and back to the DSM along the signal return circuit, LPP06 (YE/BU).
^ B1987 Pedal Forward/Rearward Motor Stalled - This DTC is only set during a DSM on-demand self test. During the self-test, the adjustable pedal motor will be commanded to move forward and then rearward. If the motor encounters a hard stop while moving, the DSM will attempt to move the pedals in the same direction again. If the DSM does not see any pedal movement via the Hall-effect switch during this attempt, DTC B1987 will be set.
^ B1991 Pedal Forward/Rearward Potentiometer Feedback Circuit Short to Battery - If the DSM detects battery voltage on the Hall-effect feedback circuit during normal operation or during the DSM on-demand self test, DTC B1991 will be set.
^ B2275 Pedal Forward/Rearward Potentiometer Feedback Circuit Short to Ground - If the DSM detects a short to ground on the Hall-effect feedback circuit during normal operation or during the DSM on-demand self test, DTC B2275 will be set.

When DTC B1991 or B2275 are set, the adjustable pedal motor will operate in a "jog mode". While in jog mode, the DSM will ignore any memory switch or remote transmitter inputs. The DSM will still accept input from the adjustable pedal switch, but the motor will only move in the desired direction for one second and then stop, regardless of how long the switch is held in the desired direction.

This pinpoint test is intended to diagnose the following:
^ Wiring, terminals or connectors
^ Adjustable pedal motor
^ DSM

C1-C5:

C5:

C6-C9:

C9-C10:

C10-C12:

C12-C13: