B1C24

Code

LAND ROVER B — Body

Passenger's switch descendant Relay of the pedal motor pedal

Brand: LAND ROVER

Type: B — Body

Views: UK: 12 EN: 20 RU: 14

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Blown fuse supplying the seat/pedal motor circuit
Open or shorted wiring between switch, relay, motor or control module
Faulty passenger-side descent switch (internal contact failure)
Faulty relay or relay socket for the pedal/footrest motor
Failed pedal/footrest motor or excessive mechanical binding
Poor connector pin contact or corrosion

Symptoms

Passenger pedal/footrest will not lower (descend) when commanded
Intermittent or no response from the pedal/footrest control
Clicking from relay box or no clicking when attempting descent
DTC B1C24 stored in BCM or seat control module
Related electrical anomalies (blown fuse, error lamp or other body codes)

What to check

Read and record stored DTCs and freeze-frame data with a diagnostic tool
Check for other related DTCs (seat, BCM, communication errors)
Visually inspect fuses and replace if blown
Inspect connectors at switch, relay, motor and BCM for corrosion or damage
Operate the switch while listening for relay click and observing motor
Measure supply voltage to relay coil and motor feed with switch operated

Signal parameters

Battery supply to relay/motor: approx. 11–14 V with ignition on
Relay coil activation voltage: ~12 V when switch requests descent
Switch output: near battery voltage when closed, open circuit when released
Motor current: typical motor stall or run current in amps (manufacturer spec required)
Continuity: near 0 Ω for closed switch, OL (open) when open; relay contacts

Diagnostic algorithm

Connect a diagnostic scanner, confirm B1C24 and note any other related codes. Record freeze frame and attempt data streaming for seat/pedal channels.
Verify basic power and ground: check battery voltage at fuse/relay feed and confirm good ground at motor and BCM/seat module ground points.
Inspect and test fuses protecting the pedal/seat motor circuit; replace if blown and check for immediate re-blow (indicates short or motor fault).
With ignition on, operate the passenger descend switch while observing the relay. Listen for relay click; if no click, measure relay coil voltage when switch is pressed.
If relay coil receives proper voltage but relay does not actuate, swap with a known-good identical relay or bench-test the relay.
If relay operates but motor does not move, measure voltage at motor feed during command. No voltage indicates wiring/switch/relay contact issue; voltage present with no motor movement indicates motor/mechanical fault.
Measure motor current while operating (use appropriate clamp meter). Excessive current indicates binding or failing motor; zero current with voltage present suggests open circuit in motor windings.
Check switch continuity and resistance. Replace switch if contacts are intermittent or out of specification.
Inspect wiring harness for chafing, pinched sections, or corrosion—repair any damaged wiring and retest.
If wiring, switch, relay and motor test good, check seat/seat control module and BCM for software updates, reprogramming needs or module faults; consult manufacturer technical data.
After repairs, clear codes, cycle ignition and re-test pedal/footrest operation. Confirm code does not return and perform a functional test.

Likely causes

Faulty passenger descent switch or its connector
Open/short in harness to motor or relay
Failed relay (no coil activation or stuck contacts)
Motor draws excessive current due to binding or internal fault
Blown fuse or poor ground connection

Fault status

⚠️ Status

Passenger-side descent switch/relay circuit for pedal motor — electrical fault detected (open, short, relay/switch failure or motor/ground issue). Pedal/footrest may not lower.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

Repair manuals

Manual library for LAND ROVER

320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email

B1C24 — Passenger's switch descendant Relay of the pedal motor pedal