DTC B2721[PJB]

id090208833300

DTC B2721

Liftgate/decklid ajar output short to ground

DETECTION CONDITION

Short to GND in wiring harness between PJB and trunk lid latch switch/liftgate latch switch

POSSIBLE CAUSE

•  Short to GND in wiring harness between PJB terminal J-06 Z and trunk lid latch switch terminal B (4SD)

•  Short to GND in wiring harness between PJB terminal J-06 X and liftgate latch switch terminal B (5HB)

•  Trunk lid latch switch malfunction (4SD)

•  Liftgate latch switch malfunction (5HB)

•  PJB malfunction

DTC B2721	Liftgate/decklid ajar output short to ground
DETECTION CONDITION	Short to GND in wiring harness between PJB and trunk lid latch switch/liftgate latch switch
POSSIBLE CAUSE	• Short to GND in wiring harness between PJB terminal J-06 Z and trunk lid latch switch terminal B (4SD) • Short to GND in wiring harness between PJB terminal J-06 X and liftgate latch switch terminal B (5HB) • Trunk lid latch switch malfunction (4SD) • Liftgate latch switch malfunction (5HB) • PJB malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT TRUNK LID LATCH SWITCH/LIFTGATE LATCH SWITCH CONNECTOR • Disconnect the trunk lid latch switch/liftgate latch switch connector. • Inspect the trunk lid latch switch/liftgate 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.
1		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.
2		No	Go to the next step.
3	INSPECT TRUNK LID LATCH SWITCH/LIFTGATE LATCH SWITCH SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between following terminals: ― PJB terminal J-06 Z (wiring harness-side) and body GND. ― PJB terminal J-06 X (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.
3		No	Go to the next step.
4	INSPECT TRUNK LID LATCH SWITCH/LIFTGATE LATCH SWITCH • Inspect the trunk lid latch switch/liftgate latch switch. (See TRUNK LID LATCH SWITCH INSPECTION.) (See LIFTGATE LATCH SWITCH INSPECTION.) • Is there any malfunction?	Yes	Replace the trunk lid latch switch/liftgate latch switch, then go to the next step. (See TRUNK LID LATCH AND OPENER REMOVAL/INSTALLATION.) (See LIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
4		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[PJB].) • Is the same DTC present?	Yes	Replace the PJB. (See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)
5		No	DTC troubleshooting completed.