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Diagnostic procedure

DTC B2721 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT TRUNK LID LATCH SWITCH CONNECTOR 
  • Disconnect the trunk lid latch switch connector.
  • Inspect the trunk lid latch switch connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 5.
No Go to the next step.
2 INSPECT PJB CONNECTOR 
  • Disconnect the PJB connector.
  • Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to Step 5.
No Go to the next step.
3 INSPECT TRUNK LID LATCH SWITCH SIGNAL CIRCUIT FOR SHORT TO GND 
  • Inspect for continuity between PJB terminal J-06 Z (wiring harness-side) and body GND.
  • Is there continuity?
 Yes Repair or replace the wiring harness for a possible short to GND, then go to Step 5.
No Go to the next step.
4 INSPECT TRUNK LID LATCH SWITCH 
 Yes Replace the trunk lid latch switch, then go to the next step.
(See TRUNK LID LATCH REMOVAL/INSTALLATION .)
No Go to the next step.
5 VERIFY TROUBLESHOOTING COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PJB memory using the M-MDS.
  • Perform the self-test.

    (See PJB SELF-TEST ).

  • Is the same DTC present?
 Yes Replace the PJB.
(See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION .)
No DTC troubleshooting completed.
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