B1524

Code

Other B — Body

Keyless Entry Circuit Open

Brand: Other

Type: B — Body

Views: UK: 29 EN: 34 RU: 32

AI status

Completed

ready

Completed 100%

Page language: EN

Blown fuse or removed fuse for keyless entry/receiver power
Disconnected, corroded or damaged connector at keyless entry module or antenna
Broken or chafed wiring harness (open circuit) between receiver/antenna and module or ground
Failed keyless entry receiver/antenna module
Poor or missing ground at module
Water intrusion or corrosion at receiver/antenna or connector

Remote key fob will not lock/unlock doors or operate trunk remotely
No LED/activity from receiver or antenna module when pressing remote
Keyless entry/remote functions intermittent or completely inoperative
Possible vehicle alarm/immobilizer warnings or inability to use passive keyless entry
DTC stored in body/control module for keyless entry circuit

Verify vehicle and remote key fob batteries are good
Scan for stored codes and freeze frame data; note other related body or communication codes
Inspect fuse(s) for keyless entry/receiver for continuity and correct rating
Visually inspect receiver/antenna, module, and harness for damage, corrosion, or water ingress
Check connector pins for corrosion, bent pins or pushed-out terminals
Measure battery voltage at module power pin (with harness connected)

Module power pin: battery voltage ~11–14.5 V (key off or on depending on design)
Module ground: near 0 V, continuity to chassis
Remote press should produce a transient/radio input to receiver (RF waveform; measurable with specialized RF equipment)
No continuity (open) expected on a broken circuit; continuity should be

Retrieve the code with a scan tool and note any related codes (body/BCM, U-codes).
Verify remote key fob battery is good and attempt operation while observing module LED or response.
Check fuses and relays related to keyless entry/receiver power; replace any blown fuses and retest.
Visually inspect the receiver/antenna module, connectors and harness for damage, corrosion, or water intrusion; repair as needed.
With ignition off, measure battery voltage at the module power terminal and verify good ground at module ground terminal. If no power or ground, trace back to fuse/ground point.
Perform continuity checks on wiring between the module and the antenna/remote receiver and between module and BCM/switches. Repair any open wires or poor terminals.
If wiring and connectors test OK, swap or bench-test the receiver/antenna module if a known-good unit or follow manufacturer bench test procedures for the module.
After repair or replacement clear codes, retest remote/keyless functions multiple times and road test as required to confirm the fault does not return.
If fault remains and wiring/connectors are good, consider module replacement and check for software/firmware updates from manufacturer.