Quote:
Originally Posted by orange4boy
Bob, Do you know if the Prius block heater is the same between models? I'm imagining some astronomical price for the Gen 1 and I know the Dealer will tell me they are different regarldess.
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Then NHW11 and NHW20 have the same 1.5L engine block and the heater plugs into an obscure hole between the block and the firewall. The Echo and 1.5L Scions use the same block.
If you can get a hold of Wayne Mitchell, "firengineer" (?), at PriusChat, he would be the definitive source. Search the forums and you should locate him soon enough.
BTW, I like your circuit analysis. It makes sense that the other ECUs are only power enabled after the hybrid vehicle ECU comes up. Now there are two that probably have to be on 24x7:
- ignition key reader - queries the RFID and lets the HV ECU know it is "OK." I believe it is in the 'A/C amplifier' circuit.
- HV ECU - must respond to the "key is OK" signal to bring up the car
Bob Wilson