Inspection Methods
1)Inspection of Remote Controller
Check whether the voltage of the battery inside the remote controller is above 2.9 V or not.If the remote controller is out of power,change the battery.
2)Inspection of Door Lock Motor
Take the left front door for example,use the positive pole and negative pole of the battery to connect with terminal 3 and 4 of door lock motor directly(as shown in Fig.3.75)and check the working condition of door lock motor,as shown in Table 3.15.
Fig.3.75 Inspection of Left Front Door Lock Motor
Table 3.15 Check the Working Condition of Door Lock Motor
Inspection methods of other doors are the same as that of front door.
3)Inspection of BCM Control Signal
BCM pin No.is shown in Fig.3.76,and use the universal meter to check the voltage of BCM pin A16,which should be 12 V.
Use the front door central control door lock switch to unlock and use the universal meter to check the voltage of BCM pin C05,which should be 0 V.And the voltage of BCM pin A17 should be 12 V.
On the contrary,when unlocking,use the universal meter to check the voltage of BCM pin C05,which should be 5 V.And the voltage of BCM pin A08 should be 12 V.
Fig.3.76 BCM Pin No.
4)Matching of Anti-theft Key(https://www.daowen.com)
The matching operation procedures of anti-theft key are as follows:
（1）Click“chang’an”,as shown in Fig.3.77.
Fig.3.77 Click“Chang’an”
（2）Choose Chang’an Micro-car-＞Chang’an CX70_R103＞BCM,as shown in Fig.3.78.
Fig.3.78 Choose the System of Vehicle Type
（3）After entering BCM,choose the system configuration and input the anti-theft code(namely,there are four letters in the PIN code,for example,DF02)obtained from Chang’an after-sale service,then confirm before entering,as shown in Fig.3.79
Fig.3.79 Input the PIN Code
（4）Entering the key programming,two keys can be copied at the same time,and in 10s,press the lock and unlock button of one key,and then press the lock and unlock button of another key,as shown in Fig.3.80.
Fig.3.80 Enter the Programming
（5）After 10s,the number of successfully matched keys will appear,as shown in Fig.3.81.
Fig.3.81 The Number of Matched Keys