DTC B2177


B3E090200200W05

DTC B2177

Intruder sensor circuit failure

DETECTION CONDITION

Intruder sensor malfunction or circuit malfunction

POSSIBLE CAUSE

• Open circuit in wiring harness between PJB terminal J-06 R and intruder sensor terminal B
• Short to power supply in wiring harness between PJB terminal J-06 R and intruder sensor terminal B
• Short to GND in wiring harness between PJB terminal J-06 R and intruder sensor terminal B
• Intruder sensor malfunction
• PJB malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT INTRUDER SENSOR CONNECTOR
• Turn the ignition switch off.
• Disconnect the intruder sensor connector.
• Inspect the intruder sensor 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 6.
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 6.
No
Go to the next step.
3
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between PJB terminal J-06 R (wiring harness-side) and intruder sensor terminal B (wiring harness-side)
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 6.
4
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR SHORT TO GND
• Inspect for continuity between PJB terminal J-06 R (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 6.
No
Go to the next step.
5
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (Engine off).
• Measure the voltage between PJB terminal J-06 R (wiring harness-side) and body GND.
• Is the voltage B+?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to the next step.
No
Replace the intruder sensor, then go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the WDS or equivalent.
• Turn the ignition switch to off then ON.
• Is the same DTC present?
Yes
Replace the PJB.
No
Troubleshooting completed.