DTC B109F:87 [THEFT-DETERRENT SYSTEM]


id0902g7850200

DESCRIPTION

Communication error between intruder sensor and theft-deterrent control module

DETECTION CONDITION
•  Theft-deterrent control module detects the communication error between intruder sensor and theft-deterrent control module.
POSSIBLE CAUSE
•  Intruder sensor connector or terminals malfunction
•  Theft-deterrent control module connector or terminals malfunction
•  Short to ground in wiring harness between intruder sensor terminal C and theft-deterrent control module terminal C
•  Short to power supply in wiring harness between intruder sensor terminal C and theft-deterrent control module terminal C
•  Open circuit in wiring harness between intruder sensor terminal C and theft-deterrent control module terminal C
•  Intruder sensor malfunction
•  Theft-deterrent control module malfunction


Diagnostic Procedure

Step

Inspection

Action

1
INSPECT INTRUDER SENSOR CONNECTOR
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable.
•  Disconnect the intruder sensor connector.
•  Inspect the intruder sensor connector. (Corrosion, damage, and disconnected pins)
•  Is there any malfunction?
Yes
Repair or replace the intruder sensor connector or terminal, then go to Step 7.
No
Go to the next step.
2
INSPECT THEFT-DETERRENT CONTROL MODULE CONNECTOR
•  Disconnect the theft-deterrent control module connector.
•  Inspect the theft-deterrent control module connector. (Corrosion, damage, and disconnected pins)
•  Is there any malfunction?
Yes
Repair or replace the theft-deterrent control module connector or terminal, then go to Step 7.
No
Go to the next step.
3
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Verify that the intruder sensor and theft-deterrent control module connectors are disconnected.
•  Inspect for continuity between intruder sensor terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 7.
No
Go to the next step.
4
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the intruder sensor and theft-deterrent control module connectors are disconnected.
•  Reconnect the negative battery cable.
•  Turn the ignition switch to the ON position.
•  Measure the voltage at the intruder sensor terminal C (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
No
Go to the next step.
5
INSPECT INTRUDER SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
•  Verify that the intruder sensor and theft-deterrent control module connectors are disconnected.
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable.
•  Inspect for continuity between intruder sensor terminal C (wiring harness-side) and theft-deterrent control module terminal C (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 7.
6
INSPECT INTRUDER SENSOR
•  Inspect the intruder sensor.
•  Is there any malfunction?
Yes
Replace the intruder sensor, then go to the next step.
No
Go to the next step.
7
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear DTCs using the M-MDS.
•  Perform the theft-deterrent control module DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the theft-deterrent control module.
Go to the next step.
No
Go to the next step.
8
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.