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peter2019
Senior Member
125 Posts |
 Posted - 10/24/2019 : 5:24:10 PM
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| DT466 shut down when close to stop, sometime happened while driving, no engine light warning, when restart, engine light came on, code 525 and 534 which IDM relay voltage low and IDM fault, incorrect CKP signal fault sometime came out too, changed IPR, ICP sensor, CMP sensor, and FICM bottom part, none of them helps, looks electric problem, not really sure, please help! Thanks! |
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Bluenozer
Top Member
Canada
644 Posts |
Posted - 10/25/2019 : 03:14:23 AM
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| the idm relay gets it power from that battery cable with the two 3 prong plugs i would check that harness from batteries to firewall , problem is probably at the plugs by starter |
OEM trained in wiring and all engine platforms for over 20 years
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RonF
Top Member
867 Posts |
Posted - 10/25/2019 : 03:22:26 AM
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quote:
Originally posted by Bluenozer
the idm relay gets it power from that battery cable with the two 3 prong plugs i would check that harness from batteries to firewall , problem is probably at the plugs by starter
Either that or the relay itself. |
US Army retired CMBT |
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Dvorak
Senior Member
United States
95 Posts |
Posted - 10/25/2019 : 04:14:24 AM
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| What Bluenozer and RonF said. The only thing I would add is that the fuse holders themselves have been problematic as well. |
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peter2019
Senior Member
125 Posts |
Posted - 10/25/2019 : 5:29:05 PM
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Thanks Guys, here are more information, let the bus idling this morning and I unplug IDM relay, wiring pin 30 to pin 87 to be able to do voltage drop, actually pin 30 to battery positive was keeping 0.15 voltage for more than 20 minutes, and keep 5.95 to 6.05Amp,so I guess my battery cable to IDM relay are OK, then I plug IDM relay back for another half hours, bus shut down, it looks like bus doesnot want to keep idling more than an hour:) few second, engine light came out, of cause it doesnot restart right way,I guess the fault code should be IDM relay voltage low, I unplug relay, wiring pin 30 to pin 87 again, it get spark, but guess what?,it start right away, and I replug relay again, it works, it looks the spark helps current went through, why? I just want to find out the reason. Thanks!
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2007 international DT466 shut down randomly
