Honda HR-V: Waveforms - Injector Pattern Tutorial
Honda HR-V (2015-2021) Service Manual / General Information / Waveforms - Injector Pattern Tutorial
- Purpose of this Article
- Is a Lab Scope Necessary?
- The Two Types of Injector Drivers
- Interpreting Injector Waveforms
- Current Waveform Samples
- Voltage Waveform Samples
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Purpose of this Article
NOTE: This is GENERAL information. This article is not intended to be
specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles whe
Introduction, Overview of Noid Light
INTRODUCTION
You probably have several tools at your disposal to diagnose injector
circuits. But you might have questioned
"Is a lab scope necessary to do a thorough job, or will a set of noid lights
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Abnormal Noise (AT Accelerate) (AWD)
Probable Cause
Gear noise
Poor gear mesh between ring gear and drive pinion
Hypoid gear (wear or damage)
Poor pre-road (drive pinion)
Debris in hypoid gear area
Fluid level too low
Distortion of the differential carrier case
Excessive backlash (hypoid gear)
Excessive backlash (differential
PGM-FI System Description - On-board Snapshot
Overview
For an easy analysis of problems caused by engine stalls and starting
problems, the powertrain control module
(PCM) uses an on-board snapshot to record the operational conditions at the time
of occurrence of engine stalls
and engine starting problems.
There are three types of on-board sn
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