B1144

Code

LAND ROVER B — Body

Heated steering wheel supply Glove lock motor Passive anti-theft supply

Brand: LAND ROVER

Type: B — Body

Views: UK: 18 EN: 32 RU: 22

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Page language: EN

Causes

Blown fuse or faulty fusible link for the affected supply circuit
Open or shorted wiring harness between power source and components
Corroded or loose connector at steering column, glove box or anti‑theft module
Faulty relay supplying the circuit
Poor or high‑resistance ground(s) for affected modules
Faulty body control module (BCM) / steering column module or internal power transistor

Symptoms

Heated steering wheel does not heat or is intermittent
Glove lock actuator/motor will not lock or unlock the glove box
Passive anti‑theft system may not arm, may show immobilizer/warning lamp or prevent engine start
Related warning or theft indicator lamps illuminated
Possible battery drain if short present
Stored related communications or supply DTCs in BCM or modules

What to check

Scan vehicle for all stored codes and module snapshots. Note module(s) reporting B1144 and any related codes.
Verify battery voltage with engine off and key on — should be ~12.0–12.8 V (or 13.5–14.5 V with engine running).
Inspect fuses and fusible links related to steering wheel heater, glove lock and anti‑theft supply. Replace if blown and investigate cause.
Visually inspect connectors and wiring at steering column, glove box, BCM and passive anti‑theft module for corrosion, damage, pin push‑out or water ingress.
Check for loose or damaged ground straps at body/BCM and steering column.
Perform wiggle tests on wiring while observing live data or re‑creating the symptom (safely).

Signal parameters

Battery/supply voltage at component pins: 11–14.5 V (key on/engine running as appropriate)
Ignition switched feed present when required (verify 12 V on feed pin with key on)
Ground continuity:
Fuse/relay continuity: fuse intact, relay coil and contacts functioning
CAN/serial comms: modules should show valid communication (CAN high/low ~2.5 V idle each) — check for missing messages if passive anti‑theft control relies on network

Diagnostic algorithm

Connect a diagnostic scanner and record B1144 plus any related codes and freeze frame data. Note which module(s) set the code.
Confirm battery state of charge and terminal connections. Low battery can cause spurious supply faults.
Identify the supply circuit(s) for heated steering wheel, glove lock motor and passive anti‑theft using vehicle wiring diagrams (BCM/relay/fuse locations).
Visually inspect fuses, relays and harnesses for the identified circuits. Replace any blown fuses; if fuse blows again, suspect short to ground and stop to avoid further damage.
With key on, backprobe the supply pin at the glove lock motor, heated steering wheel connector (if accessible) and passive anti‑theft module. Verify presence of correct supply voltage and good ground. If supply missing at multiple points, trace back toward fuse/relay/BCM.
Check continuity between affected component grounds and chassis. Repair any high resistance grounds.
If wiring and fuses are good, test the controlling relay and BCM output (measure control signal and supply switching). Use an oscilloscope or DVOM as needed to observe intermittent faults.
If BCM/module output is faulty and wiring/ground/fuses are confirmed good, follow manufacturer procedures for module reprogramming/replacement. Clear codes and retest after repairs.
After repair, perform full system test: operate heated steering wheel, glove lock, and verify passive anti‑theft behavior; confirm no return of faults and monitor for parasitic draw if battery issues were present.

Likely causes

Blown fuse or corroded connector at glove box/steering column
Open or high‑resistance feed wire to heated steering wheel or glove lock motor
Faulty BCM or module output supplying the passive anti‑theft/steering wheel circuit

Fault status

⚠️ Status

Supply voltage/fed circuit fault affecting heated steering wheel, glove lock motor and passive anti‑theft. Power feed missing, low or shorted; components may be inoperative.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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B1144 — Heated steering wheel supply Glove lock motor Passive anti-theft supply