No CAN Bus v1.2 output

Products & Technology Shields
#1

I have just started playing around with CAN networks and have been having trouble receiving any data through my Arduino. I have tried three different input methods. I first connected my 2003 VW Jetta through an OBD2 to Serial cable, which yielded no RX light or incoming data. Second, I wired a serial connector directly to some CAN wires in the car which lead to a blinking RX light, but still no output. Finally, I have a temperature sensor that outputs a CANH and CANL signal. When powered up, it causes the RX light to flash rapidly but yields no data in the Serial Monitor. I have desoldered the default resistor as some have suggested, to no avail. I have also tries multiple example codes that people have posted on this forum as well as others. Here is the code that I have currently running, but I have seen the same problem with other iterations of similar coding. This was borrowed from cherkasoff, another user on the forum.

[code] // demo: CAN-BUS Shield, receive data
#include <mcp_can.h>
#include <SPI.h>

long unsigned int rxId;
unsigned char len = 0;
unsigned char rxBuf[8];

MCP_CAN CAN0(9);                               // Set CS to pin 9


void setup()
{
  delay(5000);
  Serial.begin(115200);
  if(CAN0.begin(CAN_500KBPS) == CAN_OK) Serial.print("can init ok!!\r\n");
  else Serial.print("Can init fail!!\r\n");                       // init can bus : baudrate = 500k
  pinMode(2, INPUT);                            // Setting pin 2 for /INT input
  Serial.println("MCP2515 Library Receive Example...");
}

void loop()
{
    if(!digitalRead(2))                         // If pin 2 is low, read receive buffer
    {
      CAN0.readMsgBuf(&len, rxBuf);              // Read data: len = data length, buf = data byte(s)
      rxId = CAN0.getCanId();                    // Get message ID
      Serial.print("ID: ");
      Serial.print(rxId, HEX);
      Serial.print("  Data: ");
      for(int i = 0; i<len; i++)                // Print each byte of the data
      {
        if(rxBuf[i] < 0x10)                     // If data byte is less than 0x10, add a leading zero
        {
          Serial.print("0");
        }
        Serial.print(rxBuf[i], HEX);
        Serial.print(" ");
      }
      Serial.println();
    }
}

/*********************************************************************************************************
  END FILE
*********************************************************************************************************/[/code]

Any help would be greatly appreciated!

#2

Hi, could you please post the connect image and the data log(Serial monitor), thanks.