Toyota Prius 2010 Repair Manual page 139

The hybrid control system and air conditioning system output DTCs separately. Inspect DTCs following the flow
chart for the hybrid control system first if any DTCs from those systems are output simultaneously.
Depending on the timing of the power supply to the 12 V power supply circuit and high-voltage circuit when the
power switch is turned on (READY), an abnormal information signal may be output, causing this DTC to be
stored. If the output DTC is a code that was memorized in the past, check the fuses and wire harnesses. If there
is no malfunction, clear the DTC.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(a) Using the Techstream to check if the CAN communication system is functioning normally.
Result:
CAN DTC is not output
CAN DTC is output
B
GO TO CAN COMMUNICATION SYSTEM
A
2. CHECK DIAGNOSTIC TROUBLE CODE
(a) Check if DTCs for the hybrid control system are output using the Techstream.
Result:
DTC is not output
Only DTC P3108 is output
DTCs other than P3108 are output
B
GO TO HYBRID CONTROL SYSTEM
A
CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - BODY
3.
GROUND)
CAUTION:
Do not disconnect the connector on the high-voltage side.
2010 Toyota Prius
Result
Result
Proceed to
A
B
Proceed to
A
A
B
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