Hi everyone,
I have a 2000 ford mondeo and I wanted to connect it to the FORScan software with an ELM327 interface but it says cannot connect to the car.
The problem comes from the car connector I think because pins 4 and 5 show almost 2 ohms to the ground, is this value OK or it's too much?
(I have 12.6 V on pin 16)
Can the problem come from the protocol (j1850 pwm), I have tested it on a hyperterminal it's OK (ATSP 1 then ATDP).
Thank you
Basile
OBD2 connector pins
Re: OBD2 connector pins
Pins 4 and 5 are GND (signal and chasis ground, usually they are connected on the adapter side), so it is normal.
Mondeo 2000 has J1850 PWM protocol, so there is some problem with this protocol. J1850 circuit is a separate one on ELM327 board, some china clones may have some components from this circuit missing, or there may be wire/connector problem.
If you use terminal to check, you may try as the following:
>ATSP1
OK
>0100
....
If it answers to the last command with BUS ERROR or FB ERROR, it for sure means the wiring/connection/circuit problem mentioned above.
Mondeo 2000 has J1850 PWM protocol, so there is some problem with this protocol. J1850 circuit is a separate one on ELM327 board, some china clones may have some components from this circuit missing, or there may be wire/connector problem.
If you use terminal to check, you may try as the following:
>ATSP1
OK
>0100
....
If it answers to the last command with BUS ERROR or FB ERROR, it for sure means the wiring/connection/circuit problem mentioned above.