Q: Hello, my car has no spark, no controlled ground for the fuel pump, and no injector pulse. Fuse link close to the battery and relays are good.

asked by on

Won't start, no spark,no injectors pulse, no controled ground on fuel pump,fuse link close to batt are good, how can i check ecu. The red light or green light in ecu dont work can you please tell me how to check it

My car has 170000 miles.
My car has a manual transmission.

Hello and thank you for contacting YourMechanic. The ECU is under your passenger’s side seat. You can gain access to it by simply sliding the seat all the way forward and removing the plastic cover from the ECU. You can also remove the seat if you want, it makes access a little easier.

The 4-cylinder ECU has a slotted switch that turns 1/4 or 1/2 turn clockwise and counterclockwise to do the same task. Turn the ignition switch on, but do not start the engine. All of the lights in the dash should be on. Turn the ’diagnostic mode selector’ screw on the ECU fully clockwise. The Check Engine Light will go out then wait 5 seconds, and turn the screw fully counter clockwise. The Check Engine Light will then begin to flash the trouble code (number of long flashes is the 1st digit, number of short flashes is the 2nd digit).

To clear all stored codes and turn the Check Engine Light off, turn the screw fully clockwise while it is in diagnostic mode. Wait 5 seconds, then turn the screw fully counter clockwise.

If you need assistance with your no spark issue, then seek out a professional, such as one from Your Mechanic to help you with your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Hello, my car has no spark, no controlled ground for the fuel pump, and no injector pulse. Fuse link close to the battery and relays are good.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 4l80E mechanical

TransGo makes a manual shift conversion kit for the 4L80-E. This shift kit installs inside the valve body and turns the 4L80-E into a purely mechanical transmission so no computer at all is required. This kit will require vacuum from...

Q: My car has no electrical power and there is a blown 80 amp fuse under the hood

It sounds like you have a ground issue. Check the ground wires from the battery to the fuse box. Make sure that the cables are tight and free of corrosion. Check the condition of the battery terminals for corrosion and...

Q: Can i put something down gas tank to see how much gas I have?

The filler neck on most vehicles will have a rollover valve that is connected to the end of the filler tube, on the inside of the tank. So, unless someone has removed the rollover valve, you will probably be unable...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.