Search found 50 matches

by vasek
Tue Aug 04, 2020 4:15 pm
Forum: Diagnostic discussion
Topic: Shogun Hydraulic brake booster waveform
Replies: 3
Views: 81

Re: Shogun Hydraulic brake booster waveform

A conventional electric motor with brushes is used. The fact that the high peak is replaced by a low value on the oscillogram - confirms this. Similarly, there is a wave - shaped change in the current at the fuel pump if the motor is with brushes. The number of pairs of contacts in the motor can be ...
by vasek
Tue Aug 04, 2020 9:27 am
Forum: Diagnostic discussion
Topic: Shogun Hydraulic brake booster waveform
Replies: 3
Views: 81

Re: Shogun Hydraulic brake booster waveform

Hi. The check can be performed when the motor is activated from the scanner, or when the power supply is activated by a jumper. You should see a sharp increase in current when starting the pump, then switching to normal pumping mode. Be careful to turn off the power when the emergency pressure valve...
by vasek
Thu Jul 30, 2020 12:21 pm
Forum: Diagnostic discussion
Topic: 2004 Rover 75 2L Diesel no start
Replies: 8
Views: 262

Re: 2004 Rover 75 2L Diesel no start

Taking into account the details of the case in question. If the standard injector control scheme is implemented in this example, then there are two series of pulses per injector. The first series is the main one ,with a rated current. This series follows in the first cylinder after the TDC timing pu...
by vasek
Tue Jul 28, 2020 6:54 pm
Forum: Diagnostic discussion
Topic: 2004 Rover 75 2L Diesel no start
Replies: 8
Views: 262

Re: 2004 Rover 75 2L Diesel no start

Hi. It seems that there was an error in the installation of the chain. The injection timing is broken by 360 degrees. If you look at the location of the injectors connectors,you can see that it is easy to recross the connector of the injector 1 to the injector 4. So on - the connector of the injecto...
by vasek
Fri Jun 12, 2020 8:50 am
Forum: Diagnostic discussion
Topic: Ford Galaxy strange CAM waveform
Replies: 2
Views: 679

Re: Ford Galaxy strange CAM waveform

Hi.
A faulty camshaft sensor reads the reference signal with an error.
The position of the TDC of the fourth cylinder determines a single narrow pulse.
The position of the TDC of the third cylinder is determined by two narrow pulses with a minimum gap.
Here is the correct signal :
by vasek
Thu May 21, 2020 10:09 pm
Forum: Diagnostic discussion
Topic: Scv/drv
Replies: 2
Views: 665

Re: Scv/drv

HP3 pump:
by vasek
Thu May 21, 2020 9:38 am
Forum: Diagnostic discussion
Topic: Mitsubishi L200 FRP Waveform
Replies: 8
Views: 981

Re: Mitsubishi L200 FRP Waveform

Hi.
If it's useful.
by vasek
Thu May 14, 2020 11:24 pm
Forum: Diagnostic discussion
Topic: source of noise on sensor signals
Replies: 11
Views: 1398

Re: source of noise on sensor signals

Unfortunately, there is no way to view the diagram for this car.
Typically, the ECU has a power ground and sensor ground.
In this case, it is convenient to connect the ground of the oscilloscope to the PIN ground of the AFS.
With this connection, you will see TPS and AFS signals without noise.
by vasek
Thu May 14, 2020 9:52 pm
Forum: Diagnostic discussion
Topic: source of noise on sensor signals
Replies: 11
Views: 1398

Re: source of noise on sensor signals

I'm not sure what you mean by "mass" though. Could you clarify that? Mass - ground (machine translation ).:) Already corrected it. These traces were captured by backprobing the ECU connector inside the passenger compartment of the car. If there's a place I can probe the sensor that will give me a c...
by vasek
Thu May 14, 2020 9:23 pm
Forum: Diagnostic discussion
Topic: source of noise on sensor signals
Replies: 11
Views: 1398

Re: source of noise on sensor signals

Hi. The noise that is present in the signals does not affect the problem with the engine operation in your example. Such noises may be caused, as indicated above, the operation of the generator, drives the coils and injectors, fuel pump, electric motors, etc. To more precisely, you need the file its...