Theft Deterrent System (W/O Intrusion Sensor) Diagnosis System
DESCRIPTION
DLC3 CHECK
CHECK BATTERY VOLTAGE
Theft Deterrent System (W/O Intrusion Sensor) -- Diagnosis System |
The main body ECU RH controls the functions of the theft deterrent system on the vehicle. Wireless door lock control system data can be read in the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for a malfunction and perform repairs.
The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with ISO 15031-03 and matches the ISO 15765-4 format.
Symbol
| Terminal No.
| Name
| Reference terminal
| Result
| Condition
|
SIL
| 7
| Bus "+" line
| 5-Signal ground
| Pulse generation
| During transmission
|
CG
| 4
| Chassis ground
| Body ground
| 1 Ω or less
| Always
|
SG
| 5
| Signal ground
| Body ground
| 1 Ω or less
| Always
|
BAT
| 16
| Battery positive
| Body ground
| 9 to 14 V
| Always
|
Connect the cable of the intelligent tester to the DLC3, turn the engine switch on (IG) and attempt to use the intelligent tester. If the screen displays a communication error message, a problem exists in the vehicle side or with the tester side.
- If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself. Consult the Service Department listed in the tool's instruction manual.
If voltage is below 11 V, replace the battery.
- Voltage:
- 11 to 14 V
