Blownginster

Vehicle is a 2002 grand cherokee larado 4L. Problem started when I hit the brakes hard for a second to avoid hitting a deer. I went to pick up speed again and noticed it had shut off. It hasn't restarted since. It cranks but won't start. Fuel pump isn't coming on but I jumped around the relay and the pump works fine. The gas gauge is also reading empty with the light on. It has gas in it and overhead console still says 90 miles until empty. The cel doesn't come on with the key until about 20 seconds after it is switched on. Key with a circle around it and a line through it comes kn also...not sure if that use to come on. If does nothing but show the mileage when I try to pull codes with the key and can't pull codes with scanner. All the fuses I can find are good. Before I start buying parts, lets hear some ideas. Jeep has ran flawless for first 117000 miles. Thanx for any ideas you can offer

Craig

marked1

One thing I do know is that the CEL has to come on when the key is switched on. That is what wakes up the ECM to let it know it's time to go to work. If It is not coming on instantly Then you have a voltage or ground issue going to your ECM. Good luck.