Body computer Peugeot Bipper KFV TU3A/TU3JP BCM

Faults Detected on BCM and Lighting System - Peugeot Bipper

Issues Identified:

• Position lights not turning on or staying on.
• Low beam headlights remaining on.
• LOW BEAM HEADLIGHTS STAY ON EVEN WITH IGNITION OFF.
• Low beams not functioning.
• Malfunctioning windows or wipers.

Significant Customer Reports:

• LEFT REAR STOP LIGHT REMAINS ON (EVEN WITH IGNITION OFF).
• The vehicle does not start, ABS pump motor always active. IPC (Instrument Panel Cluster) lights up, no warning lights displayed. "Fuel cut-off" displayed on IPC. No diagnostics possible on any ECU (using Autel). Possibly caused by reversed booster connection to a flat battery.
• Wipers occasionally activate spontaneously and restart when tapping the body computer.

Collected Fault Codes from Completed Repairs:

• B1011: Left stop light.
• B1033: Daytime running lights.
• B1021: Right rear position lights.
• B1049: Rear hatch relay stuck.
• B1016: Wiper command - electrical fault, open circuit.
• B1018: Wiper command (low speed) - electrical fault, open circuit.
• B1021: Right side or rear position lights - electrical fault, low current.
• B1022: Left front position lights - electrical fault, low current.
• B1033: Daytime running lights - electrical fault, low current.
• P0657: Main relay, low on-board network voltage.
• P068A: Battery, main relay, low on-board network voltage (not always recorded).
• U0422: Fuel supply safety cutoff - invalid data.
• U0426: Immobilizer signal timeout.

Additional Information:
The BCM (Body Control Module) manages various cabin systems and driver-assistance functions such as wipers and lights.

Location in the Vehicle:
The body computer is located on the driver’s side, under the left panel. It is easily accessible by removing part of the cabin upholstery.

Body Computer Location in Alfa Romeo Giulietta:
Position similar to Fiat Fiorino, near the driver’s side panel.