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?
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: Q: Not starting

Hi there. If the relay is clicking, then there is power to the glow plug controller. Remove one of the glow plugs and look at it. If the glow plug is white and has some blue on the rod, then...

Q: No start with fuel pressure regulator 2012 Nissan Juke

Hello - I believe you have a fuel supply problem, which may or may not be the fuel pressure regulator. Monitoring fuel pressure while the engine is being cranked, and while it's running, will help you determine the real problem...

Q: What does it mean if the Check Fuel Cap message is displayed?

A common misconception is that the only purpose of a fuel cap is for it to be a top for the fuel tank. It actually has many purposes and is a critical component of the evaporative emissions (EVAP) system. If...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.