Contents Section: Testing & Diagnostics All sections

Waveform (injector) - 1.9l Tbi VIN [9] Ford Escort IV

Testing & Diagnostics 2 illustrations ~263 words

INTRODUCTION

Note. TBI (Throttle Body Injection) may also be referred to as CFI (Central Fuel Injection).

Note. For a tutorial on how to interpret injector waveforms, see WAVEFORMS - INJECTOR PATTERN TUTORIAL article in the GENERAL INFORMATION section.

Note. To see a list of the other year/make/models these waveform(s) apply to, go to the top of the article.

SOURCE OF WAVEFORMS

The Source Vehicle Information Table describes the vehicle the waveform came from. It is not needed for interpretation and is included for reference only.

Each waveform contains a note that links it to its related source table.

ApplicationSpecification
Year1989
MakeFord
ModelEscort
Engine1.9L In-Line 4 CFI VIN [9]
Ignition TypeDistributor w/Hall Effect Pickup
Trans TypeAutomatic Transaxle
Mileage43,611
VIN Code9 - K

SOURCE VEHICLE INFORMATION

  1. (Scheme 1)for the waveform.
  2. See the «WAVEFORM DATA»(/ford/escort/iv-1986-1990/remont/testing-diagnostics/#waveform-injector-19l-tbi-vin-9) for supporting data.

The Waveform Data Table is listed first. This table contains supporting information about the waveform illustration and should be used in conjunction with it.

The waveform illustration follows after the table.

Note. See the SOURCE VEHICLE INFORMATION in this article for a description of the vehicle the waveform came from.

ApplicationSpecification
Pattern TypeVoltage
Voltage Base10 Volts
Time Base2 Milliseconds
Oscilloscope UsedTektronix 222A
Pattern RepresentsSingle Injector
Injector Driver TypeCurrent Controlled
Side of Circuit That Driver SwitchesGround
Injector On-Time Shown6.0 mS
ConditionsUnknown
Cursors On-ScreenNo
Cursors Are MeasuringN/A
StatusKnown Good Pattern

WAVEFORM DATA

Injector Waveform (Voltage) - Known Good. Scheme 1

Scheme 1: Injector Waveform (Voltage) - Known Good
  1. (Scheme 2)for the waveform.
  2. See the «WAVEFORM DATA»(/ford/escort/iv-1986-1990/remont/testing-diagnostics/#waveform-injector-19l-tbi-vin-9) for supporting data.

The Waveform Data Table is listed first. This table contains supporting information about the waveform illustration and should be used in conjunction with it.

The waveform illustration follows after the table.

Note. See the SOURCE VEHICLE INFORMATION in this article for a description of the vehicle the waveform came from.

ApplicationSpecification
Pattern TypeVoltage
Voltage Base10 Volts
Time Base1 Millisecond
Oscilloscope UsedTektronix 222A
Pattern RepresentsSingle Injector
Injector Driver TypeCurrent Controlled
Side of Circuit That Driver SwitchesGround
Injector On-Time Shown6.18 mS
ConditionsUnknown
Cursors On-ScreenNo
Cursors Are MeasuringN/A
StatusKnown Good Pattern

WAVEFORM DATA

Injector Waveform (Voltage) - Known Good. Scheme 2

Scheme 2: Injector Waveform (Voltage) - Known Good