Lexus RX300 (MCU15). Service manual - part 380
Absence of
Master
D6
01
(Communication
Control)
Component in which this code is re-
corded has been disconnected
from system with ignition in ACC or
ON. Or, when this code was re-
corded, multi–display assembly
was disconnected.
D Check harness for power supply
system of multi display.
D Check harness for communica-
tion system of multi display.
D Check harness for power supply
system of navigation ECU.
D Check harness for communica-
tion system of navigation ECU.
Connection
Check Error
D7
01 *6
(Communication
Control)
Component in which this code is re-
corded has been disconnected
from system after engine start.
Or, when this code was recorded,
multi–display assembly was dis-
connected.
D6
D Check harness for power supply
system of multi display.
D Check harness for communica-
tion system of multi display.
D Check harness for power supply
system of navigation ECU.
D Check harness for communica-
tion system of navigation ECU.
Transmission
Error
DC
01
(Communication
Control)
Transmission to component shown
by auxiliary code has been failed.
(This code does not necessarily
mean actual failure.)
If same auxiliary code is recorded in
other component(s), check harness
for power supply and communica-
tion system of components shown
sub code.
Master Reset
(Momentary
Interruption)
DD
01
(Communication
Control)
D Check harness for power supply
system of multi–display assembly.
D Check harness for communica-
tion system of multi–display assem-
bly.
D If error occurs frequently, replace
multi–display assembly.
Registration
Completion
Instruction
Error
E0
01
(Communication
Control)
”Registration Completion Instruc-
tion” command from multi display
cannot be received.
Since this DTC is provided for engi-
neering, it may be detected when
no actual failure exists.
ON/OFF
Instruction
Parameter
Error
E2
01
(Communication
Control)
Error is detected in ON/OFF control
command from multi–display as-
sembly.
Replace multi–display assembly.
Registration
Request
Transmission
E3
01
(Communication
Control)
Since this DTC is provided for engi-
neering, it may be detected when
no actual failure exists.
D Registration Request command
is output from slave component.
D By reception of connection check
Instruction, Registration Request
command is output from sub–mas-
ter component.
After engine is started, multi–dis-
play assembly was disconnected
from system.
Master Error
DF
01
(Communication
Control)
Due to defective condition of com-
ponent with a display, master func-
tion is switched to audio equip-
ment . Error occurs in communica-
tion between sub–master (audio)
and master component.
D Check harness for power supply
of multi–display assembly.
D Check harness for communica-
tion system of multi–display assem-
bly.
D Check harness for communica-
tion system between multi–display
assembly and sub–master compo-
nent.
Plural Frame
Abort
E4
01
(Communication
Control)
D Since this DTC is provided for en-
gineering purpose, it may be de-
tected when no actual failure exists.
Plural frame transmission is
aborted.
*6: When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition
switch in ACC or ON, this code is stored.
DI–750
–
DIAGNOSTICS
LEXUS NAVIGATION SYSTEM
LEXUS RX300 (RM785E)