B10EE

Code

LAND ROVER B — Body

rear double engine lock

Brand: LAND ROVER

Type: B — Body

Views: UK: 23 EN: 31 RU: 21

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Page language: EN

Causes

Failed rear double lock actuator or motor
Mechanical binding or foreign object preventing lock movement
Intermittent or failed connector at actuator
Damaged wiring harness (short to ground, open, or short to power)
Blown fuse or faulty relay feeding the lock circuit
Faulty body control module (BCM) or module software fault

Symptoms

Rear double engine lock will not lock or unlock on request
Intermittent operation or requires multiple attempts to operate
Associated warning lamp or message on the instrument cluster or infotainment
Noise (grinding or no sound) from rear lock area when command is given
Related central locking or immobiliser symptoms in some cases

What to check

Read and record freeze frame and any related DTCs with a manufacturer-level diagnostic scanner
Attempt lock/unlock while observing lock area for movement and listening for actuator noise
Visually inspect actuator, lock mechanism and nearby harness for damage, corrosion, contamination or foreign objects
Check fuses and relays for the lock circuit
Inspect and reseat connectors at the actuator and BCM
Check for technical service bulletins (TSBs) or software updates related to lock systems for the vehicle

Signal parameters

Actuator supply voltage (key/lock command): approx. 9–12 V when commanded (varies with vehicle architecture)
Ground continuity: near 0 Ω between actuator ground and chassis ground
Actuator coil/motor resistance: typically low ohms to tens of ohms (manufacturer-specific) — expect measurable resistance, not open circuit
Command/feedback switch: opens/closes on travel; should change state when operated
Current draw during operation: usually in the 0.1–3 A range depending on actuator size (watch for stalled-high current)

Diagnostic algorithm

Connect a manufacturer-level diagnostic tool and clear code, attempt operation and verify code reappears; capture any accompanying codes or live data
Visual inspection: examine actuator, lock mechanism and wiring for damage, moisture, corrosion or obstruction; free any binding components
Check power and ground at the actuator connector: with ignition and command active measure voltage on supply pin and continuity to ground
If supply or ground missing, trace wiring back to fuse/relay and BCM; inspect and test fuse and relay
Backprobe actuator connector while commanding lock: verify correct voltage/pulse and any feedback signal; compare to expected values from service data
Measure actuator resistance and current: if open circuit or excessive current (stall), remove actuator and bench-test with appropriate low-voltage supply and fuse
Inspect connector pins for corrosion or loose terminals; repair or replace connector as required
If wiring and actuator test good, check BCM outputs and input signals using diagnostic tool; consult wiring diagrams and perform module output tests
If BCM outputs are absent or erratic but wiring and actuator are good, consider BCM software update or replacement following manufacturer procedures
After repair, clear codes and verify repeated operation over multiple cycles; road-test or cycle lock to ensure reliability

Likely causes

Actuator motor failure
Wiring open or short to ground/power between actuator and BCM
Corroded/loose connector at the rear lock assembly
Blown fuse or failed relay supplying the lock

Fault status

⚠️ Status

Rear double engine lock fault — actuator/circuit not responding or reporting correctly. Check actuator, connectors, wiring, fuses/relay and BCM.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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Manual library for LAND ROVER

413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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