B1987

Code

Other B — Body

Pedal Forward / Rearward Motor Stalled

Brand: Other

Type: B — Body

Views: UK: 29 EN: 41 RU: 25

AI status

Completed

ready

Completed 100%

Page language: EN

Mechanical obstruction in track or mechanism (debris, foreign object, bent track)
Worn or seized motor bearings or gearbox
Damaged motor windings or internal failure
High current draw due to jammed mechanism or binding linkage
Open, shorted or high-resistance wiring or poor connector/corrosion to motor
Faulty pedal/seat position switch or command input

Visually inspect seat/pedal track and mechanism for debris, obstructions, or physical damage
Check fuses and relays for the motor circuit
Inspect electrical connectors for corrosion, damage, or poor seating at motor and control module
Operate the control while watching the mechanism to attempt to reproduce fault
Listen for motor noise when a command is given (no noise may indicate open circuit; loud noise may indicate internal mechanical failure)
Scan vehicle for stored codes and live data from seat/position module and switches

When commanded: motor supply should be near battery voltage (~12 V) with ignition on/command active
Motor ground continuity to chassis or module ground should be present
Position/feedback sensor (if fitted) provides a variable signal (voltage or resistance) that changes as the seat/pedal moves
Normal operation shows a brief inrush current at motor start then lower running current; a stalled motor shows sustained high current (measure with clamp meter)
Control module outputs (command) should show a logical on/off or PWM signal when request is made

Confirm symptom and retrieve freeze frame and history with a scan tool; note when DTC set and any related codes
Attempt to reproduce: operate pedal/seat while observing track — look for binding or physical stops; clear obstructions if found and retest
Visually inspect wiring, connectors, and ground at the motor and control module; repair any damaged connectors or wires
Check fuses/relays for the motor circuit; replace if faulty
Measure voltage at motor connector while commanding movement. If no voltage, trace back to switch and control module; if voltage present, proceed
Measure motor resistance with ignition off and compare to specification or a known-good motor; very low or open resistance indicates internal failure
Measure current draw during a commanded move with a clamp meter. High sustained current suggests motor stall or mechanical jam
If motor does not receive correct command signals but switches are good, test/replace the seat/pedal control module or perform module software update per manufacturer guidance
If motor fails bench test (does not run or draws excessive current), replace motor/actuator assembly. After repairs, clear codes and verify proper operation and that B1987 does not return