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
SEE MORE:
Keyless Access System Symptom Troubleshooting - The Key-In Reminder Sounds
In Vehicle OFF (lock) Mode When Door Is Open
1. PCU DTC check.
Turn the vehicle to the ON mode.
Connect the HDS to the data link connector (DLC).
Check for DTCs in the POWER CONTROL UNIT with the HDS.
DTC (POWER CONTROL UNIT)
Are there any DTCs?
YES
Go to indicated DTC troubleshooting.
NO
Go to step 2.
2. Shorted wire check (KEY SW line)
Interpreting A Current Controlled Pattern
NOTE: Current controlled drivers are also known as "Peak and Hold"
drivers. They
typically require injector circuits with a total leg resistance with less than
12
ohm.
NOTE: This example is based on a constant power/switched ground circuit.
See Fig. 3 for pattern that the following text describe
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