Ground and Object Jumping problem

Hey guys, Here is my problem. My Jumping works fine, however, lets say I jump when I am literally against the wall, as the photo shows. Like literally facing the wall and against it and press jump. Well it's disabling my canJump Bool and won't reactivate unless I climb up and object and fall off it and hit the ground again. No matter what order I put it in.

Is there something I am missing here?

I'll post both the player code and the Object Detection code.

PLAYER CODE.

 using UnityEngine;
 using System.Collections;
 // REQUIRED COMPONENTS TO WORK!
 [RequireComponent(typeof (Animator))]
 
 public class Controller : MonoBehaviour {
 
     private CapsuleCollider col; // This is the Collider for Player.
     private Animator anim;    // This is the Animator for Player.
     public float Speed = 5.0f;
     public float TurnSpeed = 5.0f;
     public float jumpHeight = 10.0f;
     public bool canJump;
     public bool grounded;
     public bool ObjDetected = false;
 
     // Use this for initialization
     void Start () {
         anim = gameObject.GetComponent<Animator>();                      
         grounded = true;
     }
     
     // Update is called once per frame
     void Update () {
         //if (grounded) {
         if (Input.GetKey (KeyCode.W)) {
                 transform.Translate (Vector3.forward * Speed * Time.deltaTime);
                 anim.SetFloat ("Speed", 1f);
             } else {
                 anim.SetFloat ("Speed", 0f);
             }
         if (Input.GetKey (KeyCode.S)){
                 transform.Translate (Vector3.back * Speed * Time.deltaTime);
                 anim.SetFloat ("WalkBack", -1f);
             } else {
                 anim.SetFloat ("WalkBack", 0f);
             }
         if(Input.GetKey (KeyCode.A)){
                 transform.Rotate (0,-5,0);
             }
         if(Input.GetKey (KeyCode.D)){
                 transform.Rotate (0,5,0);
             }
         if (ObjDetected) {
             transform.Translate(Vector3.back * 5 * Time.deltaTime);
                 }
     //}
 }
     void FixedUpdate(){
 
                 if (Input.GetKeyDown (KeyCode.Space) && canJump == true) {
                         if (canJump) {
 
                                 transform.rigidbody.AddForce (Vector3.up * jumpHeight);
                                 Physics.gravity = new Vector3 (0, -20, 0);
                                 canJump = false;
 
                         } else {
                                 canJump = true;
                         }
                 }
         }
     void OnCollisionEnter(Collision col){
          if (col.gameObject.tag == "Map") {
             canJump = true;
                 }
         }
 }
 

OBJECT DETECTION CODE (IT'S A BOX TRIGGER)

 using UnityEngine;
 using System.Collections;
 
 public class ObjectDetection : MonoBehaviour {
 
     public Controller controller;
     
     // Update is called once per frame
     void Update () {
     
     }
 
     void OnTriggerEnter(Collider col){
         if (col.gameObject.tag == "LvlObject" && Input.GetKey (KeyCode.Space)) {
             Debug.Log ("Object Detected");
             controller.ObjDetected = true;
             }
         }
     void OnTriggerExit(Collider col){
         if (col.gameObject.tag == "LvlObject") {
             Debug.Log ("Object no longer detected");
             controller.ObjDetected = false;
     }
     }
 }
 

Can you please help me figure out why this happens or at least guide me to the right path? I would do a raycast, but it got confusing with how to exactly implement it, as I've never really used Rays before.