B1339

Code

Other B — Body

Chime Input Request Circuit Short To Battery

Brand: Other

Type: B — Body

Views: UK: 18 EN: 34 RU: 22

AI status

Completed

ready

Completed 100%

Page language: EN

Damaged wiring harness with insulation worn and contacting +12V
Faulty or stuck switch (door, hood, seatbelt, ignition) that is tied to battery voltage
Poorly installed aftermarket accessory or alarm creating a feed to the chime circuit
Corroded or damaged connector at the body control module (BCM) or chime module
Internal short or failure inside the BCM/chime module
Incorrect or missing ground causing circuit to reference battery voltage

Constant or intermittent chime sounding without trigger condition
No chime when a legitimate condition is present (if control logic is confused)
Battery drain or parasitic draw when vehicle is off (if chime is energized constantly)
Multiple body module warnings or communication errors
Related switches (doors, seatbelt, hood) behave incorrectly on dash cluster

Retrieve freeze frame and other stored codes; confirm B1339 is current and note conditions when set
Visual inspection of wiring harnesses near doors, dash, glovebox, seat, and steering column for chafe, pinched wires, or aftermarket splices
Inspect connectors to BCM/chime module for corrosion, bent pins, or pushed-out terminals
Verify presence of aftermarket accessories and inspect any wiring ties into the chime circuit
Check for blown fuses related to chime or BCM circuits before applying power

Expected inactive input: open circuit or near 0 V (floating/ground reference) depending on design
Expected active input: switched to battery voltage (~11–14 V) only when a trigger occurs
Fault condition (short to battery): steady ~11–14 V on the input when it should be inactive
Resistance to battery when shorted: low ohms to B+ (near 0 Ω) when short to battery present

Confirm the code with a scan tool and record conditions (key on/off, doors open/closed, seatbelt status)
Perform a visual inspection of relevant harnesses and connectors for damage, corrosion, or aftermarket taps
With ignition off, disconnect the chime module/BCM connector for the specific input circuit and clear the code. If code does not return, the fault is in the wiring or downstream components
Backprobe the chime input with ignition cycles: measure voltage at the input pin. Verify whether voltage is present when it should be absent (indicates short to B+)
If voltage is present with the module disconnected, trace wiring toward the body (doors, consoles, switches) and disconnect/inspect intermediate connectors to isolate the short
Check related switches (door, seatbelt, hood) by disconnecting each switch and observing the input voltage; a stuck/shorted switch will remove the fault when disconnected
Perform a continuity/resistance test between the input circuit and battery positive to confirm a direct short to B+; if present, locate and repair wiring insulation, splice, or connector causing contact
If wiring and switches test good and the short is only present with the module connected, suspect an internal BCM/chime module failure and verify by swapping with known-good module where applicable or consult manufacturer procedures
After repair, clear the code and re-test multiple cycles of ignition and door/seatbelt operations to confirm the repair

Pin/harness short at a connector near door/dash where wires are routed
Door ajar or seatbelt switch mechanically stuck in the closed-to-battery position
Aftermarket alarm or stereo tapping chime wiring for accessory power
Wiring chafe through against metal causing contact with fused battery feed
BCM/chime module input driver failed and sourcing battery voltage internally

⚠️ Status

Chime Input Request Circuit detected short to battery (voltage present when circuit should be inactive).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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