Meter / Gauge System Diagnosis System
Meter. Lexus Gs430, Gs300. Uzs190 Grs190
CHECK DLC3
Meter / Gauge System -- Diagnosis System |
The vehicle uses the ISO 15765 - 4 communication protocol. The terminal arrangement of the DLC3 complies with ISO 15031 - 03 and matches the ISO 15765 - 4 format.
Symbols
(Terminal No.)
| Terminal Description
| Condition
| Specified Condition
|
SIL (7) - 5 (SG)
| Bus "+" line
| During communication
| Pulse generation
|
CG (4) - Body ground
| Chassis ground
| Always
| Below 1 Ω
|
SG (5) - Body ground
| Signal ground
| Always
| Below 1 Ω
|
BAT (16) - Body ground
| Battery positive
| Always
| 11 to 14 V
|
CANH (6) - CANL (14)
| HIGH-level CAN bus line
| Engine switch off
| 54 to 67 Ω
|
CANH (6) - Battery positive
| HIGH-level CAN bus line
| Engine switch off
| 1 MΩ or higher
|
CANH (6) - CG (4)
| HIGH-level CAN bus line
| Engine switch off
| 3 KΩ or higher
|
CANL (14) - Battery positive
| LOW-level CAN bus line
| Engine switch off
| 1 MΩ or higher
|
CANL (14) - CG (4)
| LOW-level CAN bus line
| Engine switch off
| 3 KΩ or higher
|
- HINT:
- Connect the cable of the intelligent tester to the DLC3, turn the engine switch on (IG) and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.
