MULTI-CENTER DISPLAY
TSB Revision
CHASSIS ELECTRICAL
54A-228
DTC 011: Powertrain Control Module Time-out (Related to Engine) DTC 012: Powertrain Control
Module Time-out (Related to A/T)
CAUTION
If DTC 011 or 012 is set in the multi-center dis-
play, always diagnose the CAN bus lines.
CAUTION
Whenever the ECU is replaced, ensure that the
communication circuit is normal.
.
CIRCUIT OPERATION
Refer to
P.54A-225
.
.
DTC SET CONDITION
011
• The multi-center display unit (middle grade type)
receives engine control system-related signals
from the powertrain control module via CAN bus
lines. If the display unit can not receives the nec-
essary signals, DTC 011 will be set.
012
• The multi-center display unit (middle grade type)
receives A/T control system-related signals from
the power control module via CAN bus lines. If
the display unit can not receive the necessary
signals, DTC 012 will be set.
.
TECHNICAL DESCRIPTION (COMMENT)
CAUTION
If the ignition switch is turned to the ON position
without starting the engine, DTC (past trouble)
013 and 014 may be set on the combination
meter (incorporating meter-ECU) after three min-
utes.
Current trouble
• Connector(s) or wiring harness in the CAN bus
lines between the powertrain control module and
the multi-center display unit (middle grade type),
the power supply system to the display unit, the
display unit itself, or the powertrain control mod-
ule may be defective.
Past trouble
• Carry out diagnosis with particular emphasis on
connector(s) or wiring harness in the CAN bus
lines between the powertrain control module and
the multi-center display unit (middle grade type),
and the power supply system to the powertrain
control module. For diagnosis procedures, refer
to "How to cope with past trouble" (Refer to
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points
P.00-14
).
NOTE: For a past trouble, you may not find it by
the MUT-III CAN bus diagnostics even if there is
any failure in CAN bus lines. In this case, refer to
GROUP 00, How to Use Troubleshooting/Inspec-
tion Service Points - How to Cope with Intermit-
tent Malfunction
P.00-14
.) and check the CAN
bus lines. You can narrow down the possible
cause of the trouble by referring to the DTC,
which is set regarding the CAN communica-
tion-linked ECUs (Refer to GROUP 54C, CAN
bus line Diagnostics Flow
P.54C-6
).
.
TROUBLESHOOTING HINTS
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.
• Malfunction of powertrain control module.
• Malfunction of multi-center display unit (middle
grade type)