PIR Doesn't Respond

Hi,
I am using a pir (3 pin PIR) in my project and somehow the PIR is not responding. It doesn’t detect motion. I tried the PIR with a simple code that turns an LED when motion is detected and it worked fine on the same pin i am using (i.e. Pin 9) however when I upload the code below the pir doesn’t work. I hope someone could help me figure out the problem. I think the issue is purely software issue.

#include <Keypad.h>
const byte ROWS = 2;
const byte COLS = 2;
char keys[ROWS][COLS] =
{
  {
    '1','3'  }
  ,
  {
    '7','9'  }
  ,
};

byte rowPins [ROWS] = {
  5,6};
byte colPins [COLS] = {
  7,8};
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );


int pirPin = 9;
int dataPin1 = 13;     //Name Pin. Define which pins will be used for the Shift Register control
int dataPin2 = 10;     //Off Pin
int dataPin3 = 11;    //CVN Pin
int dataPin4 = 12;    //Vacation Pin
int dataPin5 = 2;    //Here Pin
int latchPin = 3;
int clockPin = 4;
int val = 0;

int seq[14] = {
  1,2,4,8,16,32,64,128,64,32,16,8,4,2};       //The byte sequence



void setup()
{
  Serial.begin (9600); 
  pinMode(dataPin1, OUTPUT);
  pinMode(dataPin2, OUTPUT);
  pinMode(dataPin3, OUTPUT);
  pinMode(dataPin4, OUTPUT);
  pinMode(dataPin5, OUTPUT);     
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(pirPin, INPUT);
}




void handleKeypress (const char key)
{
  Serial.println (key);
}



void loop()

{

  for (int n = 0; n < 14; n++)
  {
    digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
    shiftOut(dataPin1, clockPin, MSBFIRST, seq[n]);          //Send the data
    digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
    delay(20);
  }


  byte key = kpd.getKey();
  if (key)
    handleKeypress (key);

  val = digitalRead(pirPin);

  switch (key) {
  case '1':
//  Serial.println("entering loop");
    while(HIGH == val)
    {
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin1, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(20);
      }
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin2, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(50);
      }

    }
//Serial.println("exiting loop");
    break;
Serial.println("after break");
  case '3':
    while(HIGH == val)
    {
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin1, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(20);
      }
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin3, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(50);
      }

    }


    break;

  case '7':
    while(HIGH == val)
    {
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin1, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(20);
      }
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin4, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(50);
      }

    }


    break;

  case '9':
    while(HIGH == val)
    {
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin1, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(20);
      }
      for (int n = 0; n < 14; n++)
      {
        digitalWrite(latchPin, LOW);             //Pull latch LOW to start sending data
        shiftOut(dataPin5, clockPin, MSBFIRST, seq[n]);          //Send the data
        digitalWrite(latchPin, HIGH);            //Pull latch HIGH to stop sending data
        delay(50);
      }

    }


    break;

  }

}

Here is the code that I am using for the PIR you can find it scattered in the code above. I just copied it here below so you see what I am doing:

int pirPin = 9;
int val = 0;
pinMode(pirPin, INPUT);
val = digitalRead(pirPin);
 while(HIGH == val)

Thank you very much