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ECM reset command erases all stored DTC codes, Freeze Data and all specific data to correct the system.Ĭlear the DTC with the HDS with the engine stopped. This must be done with the HDS after reproducing DTC during troubleshooting. DTC clear command erases all stored DTC codes and Freeze Data. HDS has three kings of clear command to meet the purpose. But stored data based on failure parts should be cleared by using the ‘‘CLEAR COMMAND'' of the HDS, if parts are replaced.
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The inside ECM stores various specific data to correct the system even when there is no electrical power such as the battery negative terminal or No. To do so will only result in confusion and possibly, a needless replaced ECM. If the problem is intermittent and you can't duplicate the DTC, do not continue through the procedure. If you can't duplicate the DTCSome of the troubleshooting requires you to reset the ECM and try to duplicate the DTC. If the MIL and/or the glow plug indicator does not come onIf the MIL and/or the glow plug indicator does not come on but there is a drivability problem, do the symptom troubleshooting. If you can't check the DTC and the glow plug indicator stays on, do the glow plug indicator circuit troubleshooting. If you can't check the DTC and the MIL stays on, do the MIL circuit troubleshooting. Turn the ignition switch ON (II), select DIESEL system and observe the DTCs in the DTC MENU on the screen.ĭo the troubleshooting for the indicated DTCs.
HONDA HDS HIM DO IMMOBLIZER MANUAL
If the MIL or the glow plug indicator has been reported on, or if a drivability problem is suspected, follow this procedure:Ĭonnect the HDS to the DLC (see the HDS user's manual for specific instructions). When the ECM senses a malfunction in the system, the MIL (A) or the glow plug indicator (B) in the gauge assembly will come on. This is normal: it shows the self-testing condition of the diagnostics for the emissions control systems. It then goes off or blinks 5 times under various conditions. On these models, if you turn the ignition switch to the ON (II) position, without starting the engine, the malfunction indicator lamp will come on for about 20 seconds. With complex electronics (such as ECMs) this can sometimes mean something works, but not the way it's supposed to. In simple electronics, this usually means something won't work at all. A short is an accidental connection of a wire to ground or to another wire. An open is a break in a wire or at a connection. ‘‘Open'' and ‘‘Short'' are common electrical terms.
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If the malfunction indicator lamp (MIL) or the glow plug indicator on the dash does not come on, check for poor connections or loose pins at all connectors related to the circuit that you are troubleshooting. The term ‘‘intermittent failure'' means a system may have had a failure, but it checks OK now.
HONDA HDS HIM DO IMMOBLIZER HOW TO
How to Troubleshoot Fuel and Emissions Systems (N22A) How to Troubleshoot Fuel and Emissions Systems Intermittent Failures