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.
| Application | Specification |
|---|---|
| Year | 1989 |
| Make | Ford |
| Model | Escort |
| Engine | 1.9L In-Line 4 CFI VIN [9] |
| Ignition Type | Distributor w/Hall Effect Pickup |
| Trans Type | Automatic Transaxle |
| Mileage | 43,611 |
| VIN Code | 9 - K |
SOURCE VEHICLE INFORMATION
Quick Hyperlinks
- (Scheme 1)for the waveform.
- 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.
| Application | Specification |
|---|---|
| Pattern Type | Voltage |
| Voltage Base | 10 Volts |
| Time Base | 2 Milliseconds |
| Oscilloscope Used | Tektronix 222A |
| Pattern Represents | Single Injector |
| Injector Driver Type | Current Controlled |
| Side of Circuit That Driver Switches | Ground |
| Injector On-Time Shown | 6.0 mS |
| Conditions | Unknown |
| Cursors On-Screen | No |
| Cursors Are Measuring | N/A |
| Status | Known Good Pattern |
WAVEFORM DATA
Injector Waveform (Voltage) - Known Good. Scheme 1
- (Scheme 2)for the waveform.
- 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.
| Application | Specification |
|---|---|
| Pattern Type | Voltage |
| Voltage Base | 10 Volts |
| Time Base | 1 Millisecond |
| Oscilloscope Used | Tektronix 222A |
| Pattern Represents | Single Injector |
| Injector Driver Type | Current Controlled |
| Side of Circuit That Driver Switches | Ground |
| Injector On-Time Shown | 6.18 mS |
| Conditions | Unknown |
| Cursors On-Screen | No |
| Cursors Are Measuring | N/A |
| Status | Known Good Pattern |
WAVEFORM DATA
Injector Waveform (Voltage) - Known Good. Scheme 2
See also:
• WAVEFORMS - INJECTOR PATTERN TUTORIAL
• WAVEFORM DATA