Honda HR-V: Is a Lab Scope Necessary?
Honda HR-V (2015-2021) Service Manual / General Information / Waveforms - Injector Pattern Tutorial / Is a Lab Scope Necessary?
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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
Overview of DVOM
A DVOM is typically used to check injector resistance and available voltage
at the injector. Some techs also use
it check injector on-time either with a built-in feature or by using the
dwell/duty f
The Two Types of Injector Drivers
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 a rtic
SEE MORE:
DTC Advanced Diagnostics: VSA Related DTCS
NOTE
Initial Diagnosis:
The initial on-board diagnosis occurs right after the vehicle condition is
turned to the ON mode, and the
ABS/VSA indicator comes on, and continues until the indicator goes off.
Regular Diagnosis:
The regular on-board diagnosis begins right after the ABS/VSA indicator
EGR Function Testing
TEST 1
1980-87 (PORTED EGR VALVE)
Check vacuum hoses for correct routing. Disconnect vacuum hose from EGR
valve. Run engine to operating
temperature. Apply 6 in. Hg to EGR valve. Ensure engine runs roughly or dies.
Reconnect vacuum hose.
VACUUM CONTROL
EGR valve is controlled by a combination of e
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