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Chapter 2 Troubleshooting
FIP-1.6 010-397: IOT Fusing Unit Failure
Step Check
Remedy
Yes No
Possible causative parts:
FUSING UNIT (PL6.1.1)
HARNESS ASSY FUSING UNIT MG AIO (PL6.1.2)
PWBA LVPS (PL8.2.12)
PWBA MCU (PL8.3.6)
HARNESS ASSY LVPS MAIN MG AIO (PL9.1.3)
1
Does the error still occur when the power is turned OFF and
ON?
Go to step 2. End of work.
2
Checking after resetting the FUSING UNIT.
Reseat the FUSING UNIT.
Warning: Start the operation after the FUSING UNIT has
cooled down.
Does the error still occur when the power is turned OFF and
ON?
Go to step 3. End of work.
3
Checking the connectors for connection.
Remove the FUSING UNIT.
Warning: Start the operation after the FUSING UNIT has
cooled down.
Check the connections between the PWBA MCU (P/J17)
and FUSING UNIT (P/J171).
Check the connections between the FUSING UNIT (P/J171)
and PWBA LVPS (P/J47).
Check the connections between the PWBA LVPS (P/J501
and P/J502) and PWBA MCU (P/J14 and P/J15).
Are these connectors connected correctly?
Go to step 5.
"Reconnect the
connector(s) P/
J17, P/J47, P/
J171, P/J501, P/
J502, P/J14 and/
or P/J15 correctly,
then go to step 4."
4
Does the error still occur when the power is turned OFF and
ON?
Go to step 5. End of work.
5
Checking the HARNESS ASSY FUSING UNIT MG AIO for
continuity.
Disconnect J17 from the PWBA MCU.
Disconnect J47 from the PWBA LVPS.
Is each cable of J17 and J47 <=> P171 continuous?
NOTE: P171 is attached to the frame.
Go to step 6.
Replace the
HARNESS ASSY
FUSING UNIT MG
AIO.
6
Checking the HARNESS ASSY LVPS MAIN MG AIO for
continuity.
Disconnect J14 from the PWBA MCU.
Disconnect J501 from the PWBA LVPS.
Is each cable of J14 <=> J501 continuous?
Go to step 7.
Replace the
HARNESS ASSY
LVPS MAIN MG
AIO.
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