Test C: DTCs B1987, B2871 and B2972 - Pedal Forward/Rearward Motor Stalled and Pedal Position Input Circuit Failure

Pinpoint Test C: DTCs B1987, B2871 and B2972 - Pedal Forward/Rearward Motor Stalled and Pedal Position Input Circuit Failure
Refer to Vehicle/Diagrams, Adjustable Pedals for schematic and connector information.

Normal Operation
The driver seat module (DSM) uses a Hall-effect position sensor attached to the adjustable pedal motor to identify the current pedal position. The DSM sends a reference voltage to the sensor along circuit LPP06 (YE/BU), the reference voltage passes through the sensor and returns to the DSM along circuit RPP06 (GN). A sensor circuit fault will cause the motor to activate for one second then stop regardless of how long the switch is pressed.
^ DTC 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 position sensor during this attempt, DTC B1987 will be set.
^ DTC B2971 Pedal Position Input Short to Ground - If during normal operation or an on-demand self test, the DSM detects a short to ground on circuit LPP06 (YE/BU) or RPP06 (GN), DTC B2971 will be set.
^ DTC B2972 Pedal Position Input Short to Battery - If during normal operation or an on-demand self test, the DSM detects a short to battery voltage or an open circuit on circuit LPP06 (YE/BU) or RPP06 (GN), DTC B2972 will be set.

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

C1-C2:

C2 (Continued)-C3:

C4-C5: