Make : TOYOTA Model : 4A-FE
Signal Name : MAP/Fuel injection
Draw the pattern below :
( Use arrows at different points , and describe what happens theres )
A: Grounding /Dwell time
B: Voltage spike from collapsing magnefeild
C: stablizing voltage
D: Idle voltage
E: Throttle opening ( Increase in Air Pressure )
F: Throttle slat ( High vaccum )
Explain in detail how these two components relate each other
As air pressure increase & MAP voltage increase , so fuel injectors ground for a longer time so fuel is being injected
Signal Name RPM Sensor
Draw the pattern below :
( Use arrows at differebt points , and describe what happens there )
A: Highest voltage induced from magnels.
B: Change in polarity
C: No voltage induced
D: Dwell time
Explain in detail how tow components relate each other
As peaks form crank sensor become close or frequeng increases fuel injectors ground more other because the RPM in the engine increases.
Singal Name : Primary & Fuel Ignition
Draw the pattern below :
( Use arrows at differebt points , and describe what happens there )
A: Dwell time/charge time/Primars Coil
B: Firing KV when coil ungrounded
C: Dwell time of fuel injector
D: Voltage returning to 12V after voltage spike
Explain in detail how two components relate each other
The bigger DWELL Time the primars coil KV builds up then free. Fuel injectors fire first.
Signal Name : Ignition voltage & Ignition Current
Draw the pattern below :
Explain the operation of the sensor or Actuator using the Graph :
( Use arrows at differebt points , and describe what happens there )
A: No current in coil
B: Mas current builds up in the coil when coil is ungrounded current drops to 0 Amps
C: Ground time , Dwell time of ptimars coil
D: Firing KV
Explain in detail how these two components relate each other
When primary coils ground or driving dwell time , the current graduetly increase . In the primar coil, until coils is ungrounded the current drops to 0 Amps & the Firing KV is produced
Leo its ok but I'm pretty sure you can do better. Which blog is this? 2 or 3? Remember to get a pass mark you must include more in-depth analysis on the testing procedures you did. Add more info on why the two waveform patterns effect each other. Add more info on what could cause it to go bad and what are bad results
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