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Home / DTC / B2352 — Antenna fail

B2352 — Antenna fail

Detailed page for trouble code B2352.

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Code

B2352

MITSUBISHI B — Body

Antenna fail

Brand: MITSUBISHI
Type: B — Body
Views: UK: 16 EN: 27 RU: 18
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in antenna power or ground wiring
  • Corroded or loose antenna connector
  • Failed antenna mast/motor (retractable antennas)
  • Failed antenna amplifier or antenna control module
  • Blown fuse or faulty relay supplying antenna
  • Damaged coaxial cable between antenna and radio

Symptoms

  • No or poor AM/FM reception
  • Antenna does not extend or retract (if motorized)
  • Audio unit displays antenna-related warning or error
  • Intermittent reception or complete loss on one band
  • Possible reduced performance of connected systems (e.g., GPS/telemetry) if combined antenna

What to check

  • Use a scan tool to read freeze frame and confirm B2352 and any related codes
  • Operate the radio/antenna (extend/retract) and observe behavior
  • Visually inspect antenna mast, base, and connector for corrosion or damage
  • Check fuses and relays for the radio/antenna circuit
  • Inspect coaxial cable and connector to head unit for damage or water ingress
  • Check for proper power (12 V) at the antenna power feed with ignition ACC/ON or when antenna activated

Signal parameters

  • Antenna power supply voltage: ~12 V when antenna is commanded (ACC/ON or drive signal active)
  • Ground continuity: near 0 ohms from antenna ground to chassis
  • Antenna motor resistance: low (motor coil resistance) when measured at the antenna motor terminals
  • Activation current draw: increased current when antenna motor runs (used to detect seized motor)
  • Coax continuity and shielding: low loss continuity between antenna coax center conductor and radio input
  • Communication bus status (if antenna amplifier uses LIN/CAN): verify presence of messages when radio is active

Diagnostic algorithm

  1. Record freeze frame and all stored codes with a scan tool. Note conditions when code set.
  2. Attempt to reproduce the fault (operate radio/antenna). Observe whether antenna extends/retracts and whether reception is present.
  3. Perform a visual inspection of the antenna mast, base, coax connector, and wiring for damage, corrosion, or water intrusion.
  4. Check relevant fuses and relays. Replace any blown fuses and retest.
  5. With connector connected, verify power and ground at the antenna harness while commanding the antenna. If no power, trace back to fuse/relay/radio output.
  6. Measure continuity between antenna and radio input for coax center conductor and shield. Repair or replace coax if open or shorted.
  7. If equipped with an antenna motor, measure resistance of the motor and apply 12 V briefly (bench test or direct) to see if motor runs. If motor is seized or draws excessive current, replace antenna assembly.
  8. If antenna has an inline amplifier, verify amplifier supply and signal; if amplifier is not responding or shows abnormal voltages, consider replacing amplifier or antenna assembly.
  9. Inspect connectors for corrosion; clean and apply dielectric grease after repair to prevent recurrence.
  10. If wiring and antenna check OK, verify radio/head unit outputs and communication lines. Replace or reprogram radio/control module only after confirming wiring and antenna component condition.
  11. Clear codes, cycle ignition, and retest operation. Road test and re-scan to confirm repair.

Likely causes

  • Physical damage or corrosion at antenna connector or mast
  • Loss of power or ground to the antenna motor/amplifier
  • Antenna amplifier internal failure
  • Faulty wiring (pinch, chafe, rodent damage) along harness to antenna
  • Faulty radio/head unit not driving the antenna
  • Intermittent connection causing intermittent fault code

Fault status

⚠️ Status
Antenna circuit fault detected. Diagnostic code stored when the antenna control detects loss of communication, open/short, or abnormal behavior in the antenna motor or amplifier. May result in loss of radio reception or failure of antenna extension/retraction.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B2350 B2351 B2353 B2370 B2900
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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