Quectel GNSS Module Series User Manual page 14

Test points distributions are shown below:
J501 Pin Assignment:
NC
NC WHEELTICK
Table 3: J501 Pin Detailed Description
Pin Name
NC
NC
NC
NC
NC
WHEELTICK
FWD
GND
J302 Pin Assignment:
SPI_MOSI SPI_SCK
SPI_CS SPI_MISO
The LG69T (AA) module supports the OBD interface, and LG69T (AD) module does not support.
1
LG69T(AA,AD)_EVB_User_Guide
1
OBD
J302
Test Points
NC NC
FWD
I/O
-
-
-
-
-
DI
DI
-
TXD1
TXD2
Pins are detailed in Table 4 below.
NC
GND
Description
-
-
-
-
-
Odometer wheel-tick input.
Forward/Backward signal input.
Low level: Forward.
Ground
RXD1 1PPS
RXD2 GND
GNSS Module Series
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