HOW TO USE THIS ARTICLE
- For a tutorial on how to interpret injector waveforms, see «WAVEFORMS - INJECTOR PATTERN TUTORIAL»(/toyota/4runner/ii-1987-1995/remont/engine-performance/#waveforms-injector-pattern-tutorial-general-information) article in the GENERAL INFORMATION section.
- To see a list of the other year/make/models these waveform(s) apply to, go to the top of the article.
SOURCE OF WAVEFORM
The Source Vehicle Information Table describes the vehicle the waveform came from. It is not needed for interpretation and is included for reference only. (Scheme 157)
| Application | Specification |
|---|---|
| Year | 1987 |
| Make | Toyota |
| Model | Pickup |
| Engine | 2.4L In-Line 4 22R-E PFI VIN [R] |
| Ignition Type | Distributor w/Magnetic Pickup |
| Trans Type | Manual Transmission |
| Mileage | 59,769 |
| VIN Code | R N - - S - H |
SOURCE VEHICLE INFORMATION
QUICK HYPERLINKS
- (Scheme 157)for the waveform.
- See the «WAVEFORM DATA TABLE»(/toyota/4runner/ii-1987-1995/remont/testing-diagnostics/#waveform-injector-4-cyl-efi) for supporting data.
INTRODUCTION
The Waveform Data Table is listed first. This table contains supporting information about the waveform illustration and should be used in conjunction with it. (Scheme 157)
Note. See the SOURCE VEHICLE INFORMATION TABLE in this article for a description of the vehicle the waveform came from.
| Application | Specification |
|---|---|
| Pattern Type | Voltage |
| Voltage Base | 20 Volts |
| Time Base | 2 Milliseconds |
| Oscilloscope Used | Tektronix 222A |
| Pattern Represents | Bank Of Injectors |
| Injector Driver Type | Voltage Controlled |
| Side of Circuit That Driver Switches | Ground |
| Injector On-Time Shown | 2.4 mS |
| Conditions | Unknown |
| Cursors On-Screen | No |
| Cursors Are Measuring | N/A |
| Status | Known Good Pattern |
WAVEFORM DATA
