DTC B109F:49 [REAR BODY CONTROL MODULE (RBCM)]

id0902p4013100

Description

Intruder sensor internal malfunction

Detection condition

•  Rear body control module (RBCM) detects the intruder sensor internal malfunction for 1.5 s or more.

Fail-safe function

Not applicable

Possible cause

•  Intruder sensor malfunction

•  Rear body control module (RBCM) malfunction

System wiring diagram

Not applicable

Description	Intruder sensor internal malfunction
Detection condition	• Rear body control module (RBCM) detects the intruder sensor internal malfunction for 1.5 s or more.
Fail-safe function	Not applicable
Possible cause	• Intruder sensor malfunction • Rear body control module (RBCM) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY REAR BODY CONTROL MODULE (RBCM) DTCs AGAIN • Clear the DTC for the rear body control module (RBCM) using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)].) • Lock the door to go on theft-deterrent system standby. • Unlock the door to cancel theft-deterrent system standby. • Switch the ignition ON (engine on) and wait for 3 s or more. • Retrieve the rear body control module (RBCM) DTCs using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].) • Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 4.
2	INSPECT INTRUDER SENSOR • Inspect the intruder sensor. (See INTRUDER SENSOR INSPECTION.) • Is the intruder sensor normal?	Yes	Go to the next step.
2		No	Replace the intruder sensor, then go to the next step. (See INTRUDER SENSOR REMOVAL/INSTALLATION.)
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear the DTC for the rear body control module (RBCM) using the M-MDS. (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)].) • Lock the door to go on theft-deterrent system standby. • Unlock the door to cancel theft-deterrent system standby. • Switch the ignition ON (engine on) and wait for 3 s or more. • Retrieve the rear body control module (RBCM) DTCs using the M-MDS. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the rear body control module (RBCM). (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.) Go to the next step.
3		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [REAR BODY CONTROL MODULE (RBCM)].)
4		No	DTC troubleshooting completed.