U05C0

Code

Generic U — Network/User

Invalid Data Received From Interior Lighting Control Module B

Brand: Generic

Type: U — Network/User

Views: UK: 22 EN: 32 RU: 21

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Corrupted or out‑of‑range CAN/LIN messages from Interior Lighting Control Module B
Faulty Interior Lighting Control Module B (hardware or firmware)
Poor connections, damaged wiring, short to voltage/ground on module network lines
Bus termination or grounding problems on CAN/LIN network
Software/configuration mismatch, improper module programming or calibration
ECU or gateway translating messages incorrectly

Symptoms

Interior or courtesy lights flicker, fail, or behave erratically
Body control symptoms relating to interior lighting (dome, map, ambient)
Related dash warnings or communication error message(s)
Intermittent operation of multiple modules that rely on lighting data
DTC present in gateway or BCM and maybe stored in other modules

What to check

Read stored and pending codes in all network modules with a capable scan tool; record freeze frame and occurrence counts
Confirm module identity and software/calibration part number in scan tool
Check vehicle battery voltage and chassis grounds
Inspect connectors and wiring at Interior Lighting Control Module B for damage, corrosion, water intrusion, or loose pins
Verify CAN/LIN bus physical layer: check for proper termination resistors and measure for shorts/opens
Attempt to communicate with the module; note if module is awake or goes to sleep

Signal parameters

CAN nominal idle voltages ~2.5 V on CANH and CANL (verify differential waveform with scope)
CAN differential dominant amplitude typically ~2 V–3 V peak-to-peak (verify bus activity and bit timing)
Message frequency and ID for interior lighting messages (compare to factory spec)
Message payload structure: expected byte fields and valid ranges (checksum/CRC if used)
LIN frame timing and break/sync fields (if interior module on LIN)
Module supply voltage at connector (should be near battery voltage when awake) and ground continuity

Diagnostic algorithm

Retrieve codes and freeze frame from all modules; note any related U-codes or body module faults.
Verify basic power/ground to Interior Lighting Control Module B (battery voltage, ground continuity).
Attempt to communicate with the module using dealer-level or OEM-capable scan tool. If no response or corrupt data, proceed to wiring checks.
Visually inspect module connectors and harness for damage, corrosion, bent pins, or moisture; repair as needed.
With ignition on, measure CAN/LIN bus voltages and signals at the module connector. Use scope to check for proper waveform, bit timing, and absence of excessive noise.
Check bus termination resistors and measure for shorts to battery/ground or opens in the bus wiring. Repair wiring faults.
If wiring and bus physical layer are good, verify module software/calibration level. Reflash/update per OEM procedure or reprogram replacement module.
If reprogramming not possible or unsuccessful, swap with a known-good same-part module (if available) and retest.
After repairs, clear codes and perform functional tests; exercise interior lighting functions and monitor for recurrence.
If code returns, escalate to manufacturer-specific diagnostics or gateway module checks.

Likely causes

Loose, corroded, or damaged connector at Interior Lighting Control Module B
Damaged CAN or LIN wiring (chafing, pinched, water intrusion)
Failed interior lighting module after electrical event (overvoltage, water)
Bad network termination resistor or short causing message corruption
Module firmware mismatch after replacement or update

Fault status

⚠️ Status

Invalid data received from Interior Lighting Control Module B: messages from the module failed validation (corrupt, invalid format, out-of-range values, or bad checksum). This indicates a communication or module data integrity problem on the vehicle network (CAN/LIN) or a faulty module.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours