B1331

Code

LAND ROVER B — Body

Tampa of the open luggage compartment rear door - failure of circuit

Brand: LAND ROVER

Type: B — Body

Views: UK: 37 EN: 48 RU: 46

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Page language: EN

Causes

Damaged or chafed wiring in the tailgate harness (hinge area)
Corroded or loose connector at the luggage compartment switch or BCM
Failed luggage compartment/tailgate open switch (mechanical or water-damaged)
Short to battery or short to ground in the sensor feed or return circuit
Blown related fuse or poor ground at the body control module (BCM)
Water ingress or contamination in switch/connector

Symptoms

Trunk/tailgate open warning lamp or message illuminated
Central locking may not operate correctly for the rear door
Interior lights or luggage compartment lamp may remain on or behave intermittently
Vehicle may not register tailgate closed — alarm or immobiliser may prevent arming
Intermittent faults that appear when moving/operating the tailgate

What to check

Use a diagnostic scan tool to read and record fault code(s) and live data for the luggage compartment switch input
Attempt to reproduce the fault by opening/closing the tailgate while monitoring the switch status in live data
Visually inspect tailgate wiring harness especially at hinge areas and flexible boot for chafing, pinching or breaks
Inspect tailgate switch connector and BCM connector for corrosion, bent pins, moisture or poor seating
Check related fuses and body grounds for continuity and proper seating
Perform wiggle test on harness and connectors while watching live data for intermittent changes

Signal parameters

Type: discrete switch input to BCM (open/closed) — not a high frequency signal
Expected voltage states: logical LOW (~0 V) and logical HIGH (near battery voltage) depending on vehicle wiring/pull-up — signal should switch cleanly when door moves
Continuity: closed switch ≈ near 0 Ω between signal and ground (or between signal and supply depending on circuit), open switch ≈ high/∞ Ω
No PWM or CAN-level signalling expected on the switch line itself; BCM reports state via network

Diagnostic algorithm

Connect a compatible diagnostic scan tool and record all related B-codes and live data. Note if code is permanent or intermittent.
Clear the code, then operate the tailgate several times to attempt to re-create the fault while watching the live input for the luggage compartment switch.
Visually inspect the tailgate switch, latch area and harness boot for damage, corrosion or water. Check connectors at both the switch and BCM.
Locate the tailgate switch connector and measure with a multimeter: verify supply voltage, ground reference and signal voltage changes as the switch is operated. If uncertain, back-probe the wiring harness while operating the tailgate.
If the signal does not change correctly, disconnect the switch and measure continuity across the switch body (or between signal and ground/supply as appropriate) to confirm mechanical switch operation.
Perform a continuity check from the switch connector to the BCM pin to rule out wiring open/short. Check for short to ground or to battery on the signal wire.
Repair any damaged wiring, clean or replace corroded connectors, or replace the tailgate switch/latch assembly as indicated by tests.
After repair, clear stored faults and confirm correct operation over multiple open/close cycles. If the circuit checks good but fault persists, investigate BCM input circuit or module fault (may require module testing/replacement and programming by a dealer).

Likely causes

Chafed wiring at the tailgate hinge causing intermittent open/short
Faulty/contaminated tailgate open switch (latch microswitch)
Corroded/poor connector at the tailgate or BCM pins
Short to ground/battery in the switch feed or return

Fault status

⚠️ Status

BCM detected a circuit failure on the luggage compartment (rear door) open sensor — open/short/intermittent signal.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.5 hours

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B1331 — Tampa of the open luggage compartment rear door - failure of circuit