2001 TOYOTA PRIUS CD player

Slave Reset
(Momentary
Interruption) DE 01 *5
(Communication
Control)After engine is started, slave com-
ponent was disconnected from sys-
tem.
Check harness for power supply
of component shown by auxiliary
code.

Check harness for communica-
tion system of component shown by
auxiliary code.
Master Error DF 01 *6
(Communication
Control)Due to defective condition of multi
display, master function is switched
to audio equipment.
Error occurs in communication be-
tween sub±master (audio) and mul-
ti display.
Check harness for power supply
of multi±display assembly.

Check harness for communica-
tion system of multi±display assem-
bly.

Check harness for communica-
tion system between multi±display
assembly and sub±master compo-
nent.
Registration
Completion
Instruction
Error E0 01
(Communication
Control)ºRegistration Completion Instruc-
tionº command from multi display
cannot be received.
Since this DTC is provided for en-
gineering purpose, it may be de-
tected when no actual failure exists.
Audio
processor ON
error E1 01 *2
(Communication
Control)While source equipment is operat-
ing, AMP output is stopped.
Check harness for power supply
of multi±display assembly.

Check harness for communica-
tion system of multi±display assem-
bly.
ON/OFF
Instruction
Parameter
Error E2 01
(Communication
Control)Error occurs in ON/OFF controlling
command from multi±display as-
sembly.
Replace multi±display assembly.
Registration
Request
Transmission E3 01
(Communication
Control)Registration Request command is
output from slave component.
Receiving Connection Check
Instruction, Registration Request
command is output from sub±mas-
ter component.
Since this DTC is provided for en-
gineering purpose, it may be de-
tected when no actual failure exists.
Plural Frame
Abort E4 01
(Communication
Control)
Since this DTC is provided for en-
gineering purpose, it may be de-
tected when no actual failure exists. Plural frame transmission is
aborted.
AM Tuner Error 43 60
(Radio receiver
assembly)Replace radio receiver assembly. Abnormal condition is detected in
AM tuner.
Inspect radio receiver assembly.
FM Tuner Error 44 60
(Radio receiver
assembly)Replace radio receiver assembly.
Abnormal condition is detected in
FM tuner.
Mechanical or
Media Error 40 61
(Cassette
switch)Inspect cassette tape.
Malfunction due to mechanical fail-
ure is identified. Or, cassette tape is
cut or entangled.
EJECT
Malfunction 41 61
(Cassette
switch)Malfunction due to mechanical fail-
ure.Replace radio receiver assembly.
No Disc
Readout 42 62
(CD player)Disc cannot be read.Inspect CD.
CD Error 44 62
(CD player)Error is detected in CD player.Replace radio receiver assembly. DI±816
± DIAGNOSTICSNAVIGATION SYSTEM
2001 PRIUS (RM778U)

EJECT Error 45 62
(CD player)Magazine cannot be ejected.
Scratched/
Reversed Disc 46 62
(CD player)Scratches or dirt is found on CD sur-
face or CD is set upside down.Replace radio receiver assembly.
Inspect CD.
Physical address: 178 Navigation ECU
Gyro Error Error in gyro sensor is detected.
(Abnormal value in voltage output
from sensor is detected for more
than specified time.)
Check the Gyro voltage in the
diagnosis system mode. 10 58
(Navigation ECU)
Map Disc Error Data cannot be read for a specified
time due to scratches or dirt on disc
surface or insertion of music CD.
Inspect disc and replace if neces-
sary. (Visually check disc surface
and wipe it with soft cloth.) 42 58
(Navigation ECU)
Vehicle speed
sensor Signal
ErrorInput error of vehicle speed sensor
signal is detected. (When no vehicle
speed sensor signal has been input
for a specified time.)
Check the vehicle speed signal in
the diagnosis system mode.

Inspect wire harness for vehicle
speed signal.

If wire harness is normal, replace
navigation ECU. 43 58
(Navigation ECU)
Player Error Malfunction of player continues for a
specified length of time.
Check if disc can be inserted/tak-
en out or not. If not , replace naviga-
tion ECU.

When the same code is detected
in recheck after deleting the DTC
memory. 44 58
(Navigation ECU)
GPS Receiver
ErrorOperation error of GPS receiver is
detected.
At an outdoor site with a clear
view, operate to display the GPS in-
formation screen of the diagnosis
system. If GPS time stamp is not
properly displayed after 15 min. or
more, replace navigation ECU. 11 58
(GPS receiver)
GPS Antenna
ErrorOperation condition of GPS anten-
na cable is detected. (Open circuit,
connection failure of connectors,
etc.)
Check if the GPS antenna is cor-
rectly connected or positioned or
not. After replacing the antenna, if
the error remains, replace the navi-
gation ECU. 40 58
(GPS receiver)
Power Supply
Error of GPS
AntennaAbnormal voltage of GPS antenna
cable or short circuit is detected.
Inspect GPS antenna and replace
if necessary. (When no continuity is
identified between connector's core
and sealed part, GPS antenna is
normal.)

If GPS antenna is normal, replace
navigation ECU. 41 58
(GPS receiver)
Player Temp.
Too HighReadout cannot be done because
temperature around player's pickup
(reading part) is too high.With IG switch OFF, leave vehicle in
cool shaded place for a while and
recheck. After deleting the DTC
memory, If same code detected, re-
place navigation ECU. 45 58
(Navigation ECU)
*2: Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.
*3: It is stored when 180 sec. has passed after the power supply connector is pulled out after engine start.
*4: It may be stored when the engine key is turned again 1 min. after engine start.
*5: It may be stored when the engine key is turned again after engine start.
*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.
± DIAGNOSTICSNAVIGATION SYSTEM
DI±817
2001 PRIUS (RM778U)

BE2820
Multipath
BE2821
Fade Out
N17398
Example :
HeadCapstan
Pinch Roller
BE4331
BE±96
± BODY ELECTRICALAUDIO SYSTEM
1763 Author: Date:
2001 PRIUS (RM778U)

Multipath
One type of interference caused by bouncing of ra-
dio waves off obstructions is called ºmultipathº. Mul-
tipath occurs when a signal from the broadcast
transmitter antenna bounces off buildings and
mountains and interferes with the signal that is re-
ceived directly.

Fade Out
Because FM radio waves are of higher frequencies
than AM radio waves, they bounce off buildings,
mountains, and other obstructions. For this reason,
FM signals often seem to gradually disappear or
fade away as the vehicle goes behind a building or
other obstructions. This is called ºfade outº.
4. Tape Player/Head Cleaning:
MAINTENANCE
(a) Raise the cassette door with your finger.
Next, using a pencil or similar object, push in the guide.
(b) Using a cleaning pen or cotton applicator soaked in clean-
er, clean the head surface, pinch rollers and capstans.
5. CD Player/Disc Cleaning:
MAINTENANCE
If the disc gets dirty, clean the disc by wiping the surface from
the center to outside in the radial directions with a soft cloth.
NOTICE:
Do not use a conventional record cleaner or anti±static pre-
servative.