ecg electron combustion graph follow the bouncing electron
DESCRIPTION
ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON. UNDERSTANDING THE PATTERN. LAB SCOPE. PULSE WIDTH (P.W.) IS THE TIME THE CIRCUIT IS ON, COMPLETING ITS PATH TO GROUND MEASURED IN MILLISECONDS (m.s.) MEASURED FROM THE BEGINNING OF ON TO THE END OF ON. LAB SCOPE. PULSE WIDTH. ON. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/1.jpg)
STEVE ZACK 1
ECGELECTRON COMBUSTION GRAPH
FOLLOW THE BOUNCING ELECTRON
![Page 2: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/2.jpg)
2
UNDERSTANDING THE PATTERN
![Page 3: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/3.jpg)
LAB SCOPE
• PULSE WIDTH (P.W.) IS THE TIME THE CIRCUIT IS ON, COMPLETING ITS PATH TO GROUND
• MEASURED IN MILLISECONDS (m.s.)
• MEASURED FROM THE BEGINNING OF ON TO THE END OF ON
![Page 4: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/4.jpg)
4
LAB SCOPE
OFF OFF
ON
PULSEWIDTH
PULSE WIDTH
![Page 5: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/5.jpg)
LAB SCOPE
• FREQUENCY (Hz) IS THE NUMBER OF TIMES SOMETHING OCCURS WITH IN ONE SECOND
• MEASURED IN HERTZ (Hz)
![Page 6: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/6.jpg)
6
LAB SCOPE
0 10 20 30 40 50 60 70 80 90 1 10 20 30 40 50 60 70 80 90 2MILLISECONDS
FREQUENCY
2 OCCURENCES EVERY SECOND EQUALS 2 Hz
![Page 7: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/7.jpg)
7
HOOKING UP THE SCOPE
![Page 8: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/8.jpg)
LAB SCOPE
• TO TEST A SENSOR, BACK PROBE THE SENSOR SIGNAL RETURN WIRE
• TO TEST AN ACTUATOR, BACK PROBE THE COMPUTER CONTROLLED GROUND
![Page 9: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/9.jpg)
9
SENSOR - BACK PROBE SIGNAL RETURN
HALL EFFECT SWITCH
![Page 10: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/10.jpg)
10
ACTUATOR (INJECTOR) - BACK PROBE COMPUTER CONTROLLED GROUND
INJECTOR
![Page 11: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/11.jpg)
LAB SCOPE
• NOISE IN A WAVE FORM CAN BE CAUSED BY AN OUTSIDE SOURCE OR MAGNETIC FIELD
• ALWAYS USE THE SCOPES CHASSIS GROUND AND HOOK IT TO THE ENGINE BLOCK
• KEEP THE SCOPE LEADS AWAY FROM ELECTRICAL DEVISES
![Page 12: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/12.jpg)
12
GROUND
CHASSIS GROUND
NOICE
![Page 13: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/13.jpg)
13
PATTERNINTERPRETATION
![Page 14: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/14.jpg)
14
SENSOR SIGNAL RETURN - HI
PICK UP COIL
VSS, WSS, DISTRIBUTER
SENSOR SIGNAL RETURN - LO
![Page 15: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/15.jpg)
15
GOOD PATTERN
BAD PATTERN
BAD PATTERN
WEAK PICKUP COIL
MISALIGNED POLE PIECE
![Page 16: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/16.jpg)
16
SENSOR SIGNAL RETURN
TPS
CTS
![Page 17: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/17.jpg)
17
GOOD PATTERN
BAD PATTERN
BAD PATTERN
BAD PATTERN
OPEN IN SENSOR RESISTOR
LOW RESISTANCE IN SENSOR
HIGH RESISTANCE IN SENSOR
![Page 18: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/18.jpg)
18
SENSOR SIGNAL RETURN
HALL EFFECT SWITCH
DISTRIBUTER
CRANK SENSOR
MAF
![Page 19: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/19.jpg)
19
GOOD PATTERN
GOOD PATTERN
BAD PATTERN
BAD PATTERN
SIGNATURE PROFILE PIP #1 TDC
AS LOAD OR SPEED INCREASE, Hz INCREASE
TIME CHANGE WITHOUT LOAD CHANGE
OFF SIGNAL CRASH
![Page 20: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/20.jpg)
20
BAD PATTERN
BAD PATTERN
BAD PATTERN
ON SIGNAL NOT STABLE
LOOSE GROUND WIRE
LOOSE VOLTAGE WIRE
![Page 21: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/21.jpg)
21
COMPUTER CONTROLLED GROUND
INJECTOR
SOLENOID
![Page 22: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/22.jpg)
22
GOOD PATTERN
GOOD PATTERN
GOOD PATTERN
BAD PATTERN
NARROW P.W. - LEAN WIDE P.W. - RICH
LOW FREQUENCY HIGH FREQUENCY LEAN RICH
LOOSE VOLTAGE WIRE
![Page 23: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/23.jpg)
23
BAD PATTERN
BAD PATTERN
LOOSE GROUND WIRE
WEAK SOLENOID COIL
![Page 24: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/24.jpg)
24
ALTERNATOR OUTPUT
ALTERNATOR
CHARGING SYSTEM - ALTERNATOR DIODE
TO BATTERY +
![Page 25: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/25.jpg)
25
GOOD PATTERN
BAD PATTERN
BAD PATTERN
BAD PATTERN
BAD PATTERN
BOUNCING BRUSH
POSITIVE DIODE SPIKE
NEGATIVE DIODE SPIKE
OPEN DIODE
![Page 26: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/26.jpg)
26
BAD PATTERN
BAD PATTERN
BAD PATTERN
FLAT DIODE
POOR BRUSH CONTACT
EXCESS AC VOLTAGE
![Page 27: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/27.jpg)
27
O2 SIGNAL RETURN
HO2S
HEGO
EGO
O2 SENSOR
![Page 28: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/28.jpg)
28
GOOD O2 PATTERN
SECONDARY OR LEAN MISFIRE
![Page 29: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/29.jpg)
LESS THAN 100ms
O2 SENSOR MUST SWITCH RICH TO LEAN AND LEAN TO RICH IN LESS THAN 100ms FOR CATALYST TO OPERATE
TEST AT 2000 RPM ENGINE AT OPERATING TEMPERATURE
O2 SENSOR TEST
![Page 30: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/30.jpg)
30
SINGLE SPARK PLUG WIRE TEST - POLARITY MAY NEED TO BE REVERSED TO INVERT PATTERN
![Page 31: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/31.jpg)
31
PERCEPTION SCOPE - SECONDARY IGNITION TEST
• ENGINE HOT
• 1000 RPM
• SPECIFICATIONS– BURN kV = 1.1 kV TO 2.1 kV– BURN TIME = 1.0 ms TO 1.8 ms– FIRING kV =
• 7.5 kV TO 12 kV DISTRIBUTER • 5 kV TO 12 kV DIS
![Page 32: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/32.jpg)
32
GOOD - PATTERNTURBULENCE, INTAKE VALVE, CARBON ON INTAKE VALVE, CARBON ON PLUG
FOULED PLUG - CARBON LOW COMPRESSION
![Page 33: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/33.jpg)
33
EXHAUST VALVE INTAKE VALVE, LEAN MISFIRE
FOULED PLUG - OIL, FUEL, CARBON
FUEL FOWLING, RICH CONDITION - CONDENSING AT CYLINDER WALLS
![Page 34: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/34.jpg)
34
TROUBLE TREE
CHART
![Page 35: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/35.jpg)
35
TROUBLE TREE CHART
STEP A:
TO TEST ALL CIRCUITS AND THE SENSOR.
BACK PROBE SIGNAL RETURN AT THE PCM.
NO PROBLEM - CIRCUIT OK
YES PROBLEM - GO TO STEP B
![Page 36: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/36.jpg)
36
STEP A
PCM
![Page 37: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/37.jpg)
37
TROUBLE TREE CHARTSTEP B:
TO TEST SENSOR, 5 VOLT AND GROUND CIRCUIT.
BACK PROBE SIGNAL RETURN AT THE SENSOR.
NO PROBLEM - REPAIR SIGNAL RETURN CIRCUIT
YES PROBLEM -ANALOG SENSOR - GO TO STEP C
DIGITAL SENSOR - GO TO STEP D
![Page 38: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/38.jpg)
38
STEP B SENSOR
![Page 39: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/39.jpg)
39
TROUBLE TREE CHART
STEP C:
ANALOG SENSOR
TO TEST 5 VOLT AND GROUND CIRCUIT.
BACK PROBE 5 VOLT AND GROUND CIRCUIT.
NO PROBLEM - REPLACE SENSOR
YES PROBLEM - REPAIR 5 VOLT OR GROUND CIRCUIT
![Page 40: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/40.jpg)
40
STEP C
5 VOLT
REFERENCESTEP C
SENSOR GROUND
![Page 41: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/41.jpg)
41
TROUBLE TREE CHARTSTEP D:
DIGITAL SENSOR
THREE AREAS
A - VOLTAGE SUPPLY CIRCUIT (PROBLEMS - REPAIR CIRCUIT)
B - SENSOR(PROBLEMS - REPLACE SENSOR)
C - GROUND CIRCUIT(PROBLEMS - REPAIR CIRCUIT)
![Page 42: ECG ELECTRON COMBUSTION GRAPH FOLLOW THE BOUNCING ELECTRON](https://reader036.vdocument.in/reader036/viewer/2022062322/56814336550346895dafa984/html5/thumbnails/42.jpg)
42
SUMMARYTROUBLE SHOOTING PROCEDURE
0 VOLT
5 VOLT
“A”
“B”
“C”