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#1 (permalink) Old 01-31-2012, 04:03 PM
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Default prius won't start.

so my 2004 prius has been through quite a bit lately. a few months ago I hit a car and bent up my fender and a little bit of the hood and bumper on the drivers side. aside from the cosmetic damage I don't think it did any significant damage. had a small tree fall on the back hatch and destroy the window in a storm, usaa covered the repairs. when i got it back the 12v battery finally died so I replaced it. then 2 days ago i drove it maybe 40 miles out of town and the triangle with the exclamation mark poped up on the dash and "problem" and a red box with an exclamation in it came up on the top left corner of the display. the next day driving home it disappeared half way home. now this morning I tried to start it to take it to the shop and instead of powering on to ready it flashes 5 boxes over the drive, neutral, park, ect. the battery gauge on the display is completely empty so I tried giving it a jump like when the 12v battery was dying before but it didn't help. I borrowed one of the obd scanners from autozone and it gave me a U0293 code. tried disconnecting the 12v battery for 5 minutes but it didn't change anything. I was considering replacing the inverter pump or picking up a usb can-bus adapter to get more details. Any ideas as to what might be wrong?
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#2 (permalink) Old 02-01-2012, 11:10 AM
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Default Re: prius won't start.

DTC U0100, U0293: LOST COMMUNICATION WITH ECM/PCM "A" & LOST COMMUNICATION WITH HYBRID VEHICLE CONTROL SYSTEM
The battery ECU receives signals from the HV control ECU, ECM, and gateway ECU via CAN (Controller Area Network) communication.


DTC U0293 LOST COMMUNICATION WITH HV ECU
The Controller Area Network (CAN) is a serial data communication system for real-time application. It is a multiplex communication system designed for on-vehicle use that provides a superior communication speed of 500 kbps and a capability to detect malfunction. Through the combination of the CANH and CANL bus lines, the CAN is able to maintain communication based on differential voltage.
HINT:
• Malfunction in the CAN bus (communication line) can be checked through the DLC3 connector, except in case of an open circuit in the DLC3 sub bus line.
• DTCs pertaining to CAN communication can be accessed through the use of the intelligent tester II (with CAN extension module).
• Malfunction in the DLC3 sub bus line cannot be detected through CAN communication, even though the DLC3 connector is connected to CAN communication.
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