2001 TOYOTA PRIUS ABS

DI±682
± DIAGNOSTICSCOMBINATION METER SYSTEM
2001 PRIUS (RM778U)
4 Check the corresponding switch or ECU.
CHECK:
Check if the corresponding switch or ECU is normal or not.
Ye s
No Corresponding switch or ECU faulty.
Combination meter ECU faulty.
*:
Multiplex communication inputSingle Communication Input
OPEN DOOR WARNINGHI±BEAM INDICATOR
BRAKE WARNINGTURN SIGNAL IND
OUTPUT CONTROL INDICATORSRS WARNING
SHIFT POSITION INDICATORABS WARNING
SEAT BELT WARNINGCHECK ENGINE WARNING
READY INDICATOR
WATER TEMPERATURE WARNING
OIL PRESSURE WARNING
CRUISE CONTROL INDICATOR
TAIL INDICATOR
DISCHARGE WARNING

Physical address: 190 Radio receiver assembly
Diagnosis item
ROM Error
Absence of
MasterDiagnosis contentCountermeasure and
inspected parts
Error is detected in internal ROM. Logical address
01
(Communication
Control)
01 *2
(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 recorded,
multi±display assembly was discon-
nected.
Check harness for power supply
system of multi display.

Check harness for communica-
tion system of multi display.

Check harness for power supply
system of radio receiver assembly.

Check harness for communica-
tion system of radio receiver as-
sembly.
DTC
21
D6Replace radio receiver assembly.
RAM Error Error is detected in internal RAM. 01
(Communication
Control)22Replace radio receiver assembly.
No Response
to Connection
Check 01 *3
(Communication
Control)Component shown by auxiliary code
is or had been disconnected from
system after engine start.
D9
Check harness for power supply
system of component shown by
auxiliary code.

Check harness for communica-
tion system of component shown by
auxiliary code. D8
Last Mode Error 01 *2
(Communication
Control)Component operated (sounds and/
or images were provided) before en-
gine stop is or has been discon-
nected with ignition switch in ACC or
ON.Check harness for power supply
system of component shown by
auxiliary code.
Check harness for communication
system of component shown by
auxiliary code. D9
No Response
to ON/OFF
Instruction
Mode Status
ErrorNo response is identified when
changing mode (audio and visual
mode change). Detected when
sound and picture does not change
by button operation. DA
DB 01
(Communication
Control)
01 *2
(Communication
Control)Dual alarm is detected.
Check harness for power supply
of component shown by auxiliary
code.

Check harness for communica-
tion system of component shown by
auxiliary code.
Check harness for power supply
of component shown by auxiliary
code.

Check harness for communica-
tion system of component shown by
auxiliary code.

If error occurs again, replace
component shown by auxiliary
code.
Transmission
Error DC 01 *4
(Communication
Control)Transmission to component shown
by auxiliary code has been failed.
(Detecting this DTC does not nec-
essary mean actual failure.)

If same auxiliary code is recorded
in other component, check harness
for power supply and communica-
tion system of components shown
sub code.
Master Reset
(Momentary
Interruption) DD 01 *5
(Communication
Control)After engine is started, multi±dis-
play assembly was disconnected
from system.
If this error occurs frequently, re-
place multi±display assembly.
± DIAGNOSTICSNAVIGATION SYSTEM
DI±815
2001 PRIUS (RM778U)

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.
Check harness for power supply
system of multi display.

Check harness for communica-
tion system of multi display.

Check harness for power supply
system of navigation ECU.

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
Check harness for power supply
system of multi display.

Check harness for communica-
tion system of multi display.

Check harness for power supply
system of navigation ECU.

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)
Check harness for power supply
system of multi±display assembly.

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

If error occurs frequently, replace
multi±display assembly.
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 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.
Registration Request command
is output from slave component.

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.
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.
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.
*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±818
± DIAGNOSTICSNAVIGATION SYSTEM
2001 PRIUS (RM778U)

EM173±04
A13942
Hood to Cowl Top
seal
VSV for EVAPR/B (ABS) Air Cleaner
Assembly
RH Engine Mounting
Insulator Engine Coolant
Reservoir Tank
Engine Under
Cover RH
N´m (kgf´cm, ft´lbf) : Specified torqueOuter Front Cowl
Top Panel Air Inlet
60 (612, 44)
52 (530, 38)
52 (530, 38)
26 (265, 19)Brake Reservoir
Tank
Wiper Motor and
Wiper Link
Assembly
Cowl Top Ventilator
Lower LH
Cowl Top Ventilator
Lower RH
Wiper Arm
7 (71, 62 in. lbf)
26 (265, 19)
± ENGINE MECHANICALTIMING CHAIN
EM±13
1129 Author: Date:
2001 PRIUS (RM778U)
TIMING CHAIN
COMPONENTS

EM1IW±02
A13929
N´m (kgf´cm, ft´lbf)
Gasket
: Specified torque VSV for EVAPR/B (ABS) Air Cleaner
Assembly
RH Engine Mounting
Insulator Engine Coolant
Reservoir Tank
Engine Under
Cover RHOuter Front Cowl
Top Panel Air Inlet
60 (612, 44)
52 (530, 38)
52 (530, 38)
26 (265, 19)Brake Reservoir
Tank
Wiper Motor and
Wiper Link
Assembly
Cowl Top Ventilator
Lower LH
Cowl Top Ventilator
Lower RH
Wiper Arm
7 (71, 62 in. lbf)
26 (265, 19)
Hood to Cowl Top
Seal
62 (630, 46)
Front Exhaust Pipe
EM±26
± ENGINE MECHANICALCYLINDER HEAD
1142 Author: Date:
2001 PRIUS (RM778U)
CYLINDER HEAD
COMPONENTS

EM1IZ±02
A13904
Front BumperR/B (ABS)
Air Cleaner
Assembly Engine Coolant
Reservoir Tank
Engine Under
CoverOuter Front Cowl
Top Panel Air Inlet
Brake Reservoir
Tank
Wiper Motor and
Wiper Link
Assembly
Cowl Top Ventilator
Lower LH
Cowl Top Ventilator
Lower RH
Wiper Arm
Hood to Cowl Top
Seal
N´m (kgf´cm, ft´lbf) : Specified torque
26 (265, 19)
7 (71, 62 in. lbf)
26 (265, 19)
11.5 (117, 8)
Head Light RH
EM±50
± ENGINE MECHANICALENGINE UNIT
1166 Author: Date:
2001 PRIUS (RM778U)
ENGINE UNIT
COMPONENTS

EC0HW±01
F12396
TOYOTA
Hand±held Tester
DLC3
B11812
B11813
± EMISSION CONTROLTHREE±WAY CATALYTIC CONVERTER (TWC)
SYSTEMEC±13
1213 Author: Date:
2001 PRIUS (RM778U)
THREE±WAY CATALYTIC
CONVERTER (TWC) SYSTEM
INSPECTION
1. CHECK TWC FOR DENTS OR DAMAGE
If any port of the heat insulator is damaged to the extent that it
contacts the three±way catalytic converter, repair or replace it.
2. CHECK EXHAUST PIPE CONNECTIONS FOR LOOSE-
NESS OR DAMAGE
3. CHECK EXHAUST PIPE CLAMPS FOR WEAKNESS,
CRACKS OR DAMAGE
4. CHECK HEAT INSULATOR FOR DAMAGE
5. CHECK FOR ADEQUATE CLEARANCE BETWEEN
EXHAUST SYSTEM AND HEAT INSULATOR ON THE
BODY
6. INSPECT HC ABSORBER AND CATALYST SYSTEM
(a) Warm up the engine.
(b) TOYOTA hand±held tester:
Forced driving of the VSV for the HC absorber and cata-
lyst system.
(1) Connect a TOYOTA hand±held tester to the DLC3.
(2) Start the engine.
(3) Push the TOYOTA hand±held tester mode on the
TOYOTA hand±held tester to operate the VSV for
the HC absorber and catalyst system.
(c) If you have no TOYOTA hand±held tester:
Forced driving of the VSV for the TOYOTA HC absorption
catalyst system.
(1) Disconnect the VSV connector for the TOYOTA HC
absorption catalyst system.
(2) Connect the positive (+) and negative (±) leads from
the battery to the VSV.
(3) Start the engine.
(d) Check that the rod of the actuator is pulled and the valve
is operating.
If not in operation, check the vacuum hose line or VSV, actuator.

LU02M±08
A13942
Wiper Arm
VSV for EVAPAir Cleaner
Assembly
RH Engine Mounting
Insulator
Engine Under
Cover RH
N´m (kgf´cm, ft´lbf) : Specified torqueOuter Front Cowl
Top Panel
26 (265, 19)
52 (530, 38)
60 (612, 44)
52 (530, 38)
Air Inlet
Engine Coolant
Reservoir TankBrake reservoir
Tank
Wiper Motor and
Wiper Link
AssemblyHeat to Cowl Top
Seal
Cowl Top Ventilator
Lower LH Cowl Top Ventilator
Lower LH
R/B (ABS)
26 (265, 19)
7 (71, 62 in. lbf)
LU±4
± LUBRICATIONOIL PUMP
1310 Author: Date:
2001 PRIUS (RM778U)
OIL PUMP
COMPONENTS