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DTC Description
 
 
DTC DETECTION LOGIC
DTC No.M.U.T.-III SE screen items
(Trouble diagnosis content)
DTC detection condition
B20D4–11TAIL LIGHT LH PWR SPLY CIRC
(Tail light left hand power supply circuit)
[CIRCUIT SHORT TO GROUND]Diagnosis conditionWhen side marker light, license plate light and tail light ON conditions are satisfied (smart FET inside IPDM E/R is ON)
Signal (terminal) The following power supply circuit
  • Side marker light
  • Tail light
  • License plate light
ThresholdOvercurrent is detected
Diagnosis delay time1 second or less
 
 
POSSIBLE CAUSE
  • Harness or connector
  • Front side marker light LH bulb
  • Front side marker light LH bulb socket
  • Front side marker light RH bulb
  • Front side marker light RH bulb socket
  • Rear combination light (body side) LH
    • LED (Tail light)
    • Harness
  • Rear combination light (body side) RH
    • LED (Tail light)
    • Harness
  • Rear combination light (power liftgate side) LH
    • LED (Tail light)
  • Rear combination light (power liftgate side) RH
    • LED (Tail light)
  • Rear side marker light LH bulb
  • Rear side marker light LH bulb socket or harness
  • Rear side marker light RH bulb
  • Rear side marker light RH bulb socket or harness
  • License plate light LH bulb
  • License plate light LH bulb socket
  • License plate light RH bulb
  • License plate light RH bulb socket
  • IPDM E/R
 
 
FAIL-SAFE
Shuts off the power supply to the following power supply circuits until the side marker light, license plate light and tail light ON conditions are no longer satisfied.
  • Side marker light
  • Tail light
  • License plate light
 
 
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
With M.U.T.-III SE
  1. Ignition switch ON.
  2. Select “T LIGHT LH CIRC MALFUNCTN” and “T LIGHT RH CIRC MALFUNCTN” in “Data List” mode of “IPDM E/R” using M.U.T.-III SE.
  3. Check the monitor status.
    Monitor itemMonitor status
    T LIGHT LH CIRC MALFUNCTN0
    1
    T LIGHT RH CIRC MALFUNCTN0
    1
What is the monitor status?
: .
: A short circuit is detected multiple times in the side marker light, tail light or license plate light power supply circuit, and damage accumulates at the smart FET inside the IPDM E/R. For this reason, IPDM E/R does not turn ON the smart FET. Because the DTC cannot be reproduced in this state, perform Diagnosis Procedure and replace IPDM E/R after the malfunctioning part is repaired. Refer to Removal and Installation.
 
2.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Ignition switch OFF.
  2. Ignition switch ON.
  3. Turn lighting switch 1ST.
  4. Select “Self Diagnostic Result” mode of “IPDM E/R” using M.U.T.-III SE.
  5. Check DTC.
Is DTC detected?
Refer to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END