Diagnosis System

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: DIAGNOSIS SYSTEM

DIAGNOSIS SYSTEM

1. DESCRIPTION
(a) The main body ECU RH controls the functions of the wireless door lock control 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 Techstream to check for a malfunction and perform repairs.
2. DLC3 CHECK





(a) The main body ECU RH uses ISO 9141-2 BEAN for its communication protocol. The terminal arrangement of the DLC3 complies with SAEJ1962 and matches the ISO 9141-2 format.






(b) Connect the cable of the Techstream (with CAN VIM) to the DLC3, turn the engine switch on (IG) and attempt to use the Techstream. 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.

3. CHECK BATTERY VOLTAGE
Voltage:
11 to 14 V
If voltage is below 11 V, replace the battery.