2005 TOYOTA AVENSIS diagram

F44864
D5
DLC3Power Steering
ECU Assy
TC13 W±L W±L
J8 J21 J9 J20
(*1) (*2) (*1) (*2)J/C
E15 TC4 B D D B
CG4 W±B (*2) W±B (*2)
CBCenter J/B
3
CA6
W±B (*1)
IO IPA
A J16
J/C
W±B (*1)
*1: LHD
*2: RHD 05±1084
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
When the terminals Tc and CG of DLC3 are connected, the power steering ECU assy displays the DTC.
WIRING DIAGRAM
050X7±04

F44861
B±W22
C11Combination Meter
Driver Side J/B
Engine Room R/B No.4 Engine Room R/B No.1 and
Engine Room J/B No.1Power Steering
ECU Assy
6
C11
17
C10B±W
W±B
W±B
B±WP/S
J8C
AM2 J26A
J8C
J26A J/C
B±WB±R
B±R B±R B±R
B±RB±GB±G
B±G (*1) (*2) (*1) (*2)(*1)
(*2)
18
DA2
DH IGN
IE41
IP11
(*1) (*2)
1
1A1
111
4A
4B
2AM2 IG2 I13
Ignition SWE159
WL
46
FL MAIN
BatteryJ15
J/CJ16
J/C
IK
IO AA
*1: LHD
*2: RHDA
AJ17
J/C
A W±B
(*2)
W±B
(*1) 05±1082
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
EMPS Warning Light Circuit
CIRCUIT DESCRIPTION
If the power steering ECU assy detects a trouble, the PS warning lights up. At this time, the power steering
ECU assy records a DTC in memory.
WIRING DIAGRAM
05C5I±01

F44862
Engine Room R/B No.1 and
Engine Room J/B No.1Power Steering
ECU Assy
Engine Room R/B No.4 EMPS Relay
W±R
FL MAIN
BatteryPIG
RLY
PGND R
R
RIE1L
1 1 11
1
1A
1 22 1
1
EMPS 53
51
E14
3
E15
2
E14 W±R
W±B
B±G
4B1
4A1
IM B±G 05±1080
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1555/55 EMPS Motor Relay Circuit
CIRCUIT DESCRIPTION
If a malfunction occurs in the system, the system prohibits the steering assist by interrupting the circuits of
the EMPS relay and the motor relay (built in the power steering ECU assy).
DTC No.DTC Detecting ConditionTrouble Area
C1555/55Open or short circuit of EMPS motor relay in the ECU circuit is
detected.Power steering ECU assy
WIRING DIAGRAM
0579Q±02

F44862
Engine Room R/B No.1 and Engine Room J/B No.1Power Steering
ECU Assy
Engine Room R/B No.4 EMPS Relay
W±R
FL MAIN
BatteryPIG
RLY
PGND R
R
RIE1L
1 1 1
1
1
1A
1 22 1
1
EMPS 53
51
E14
3
E15
2
E14 W±R
W±B
B±G
4B1
4A1
IM B±G 05±1076
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1552/52 PIG Power Source Circuit
DTC C1554/54 EMPS Relay Circuit
CIRCUIT DESCRIPTION
When turning the ignition switch to ON, battery voltage is supplied to terminal PIG of the power steering ECU
assy by EMPS relay operations. If a malfunction occurs in the system, the system prohibits the steering as-
sist by interrupting the circuits of the EMPS relay and the motor relay (built in the power steering ECU assy).
DTC No.DTC Detecting ConditionTrouble Area
C1552/52Unusual motor power source voltage value which is not within
the specification is input to power steering ECU assy.
EMPS fuse

EMPS relay

PIG power source circuitC1554/54Open or short circuit of EMPS relay circuit is detected.
PIG power source circuit

Power steering ECU assy
WIRING DIAGRAM
0579O±02

F44867
Engine Room R/B No. 4 I13
Ignition SWDriver Side J/B
ECU±IG
AM1
ALT
FL MAIN
BatteryIG1Relay
AM1 IG1IG
PGND R±W
R±WR±W
W±B
W±B
W±B B±G B±GG±Y
G±RJ10G
J20C
J11G
J21C
E156
E142 DB 18
DH5
DH1
DN1 DA9
4B1
4D1
IJ IM 12125 3
31J/C
(*1)
(*2)(*1)
(*2)
*1: LHD
*2: RHDPower Steering
ECU Assy
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
05±1073
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1551/51 IG Power Source Circuit Malfunction
CIRCUIT DESCRIPTION
The power steering ECU assy identifies ON or OFF status of the ignition switch by this circuit.
DTC No.DTC Detecting ConditionTrouble Area
C1551/51Unusual IG voltage value which exceeds the specification is
inputed to power steering ECU assy.

ECU±IG fuse

IG power source circuit

Charging system

Power steering ECU assy
WIRING DIAGRAM
0579N±02

F44865
ECMPower Steering ECU
TACH E95
(*1) GR±R
(*2) (*1) (*2)GR±R
J9A
J27B
J9A
J27B
E1512
*1: LHD
*2: RHDJ/C
TACH 05±1070
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1544/44 Engine Revolution Signal Malfunction
DTC C1545/45 Engine Revolution Signal Malfunction
DTC C1573/73 Engine Revolution Signal Malfunction (Test
Mode)
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1544/44Engine revolution signal malfunction
Engine revolution signal circuit
C1545/45Engine revolution signal malfunction
Engine revolution signal circuit

ECM
C1573/73Engine revolution signal malfunction (Test mode)
Power steering ECU assy
WIRING DIAGRAM
0579M±02

F44865
Combination Meter Power Steering ECU
C11V±W 18
SPD J10H
J10H
J20H
J20H
E155
V±W
(*1) (*2) (*1) (*2)
*1: LHD
*2: RHDJ/C
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
05±1067
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1541/41 Speed Sensor Malfunction
DTC C1542/42 Speed Sensor Malfunction
DTC C1571/71 Speed Sensor Malfunction (Test mode)
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1541/41
Speed sensor malfunction

Speed sensor

Speed sensor circuit
C1542/42
Speed sensor malfunction
Speed sensor circuit

Skid control ECU assy
Cbiti tC1571/71Speed sensor malfunction (Test mode)
Combination meter assy

Power steering ECU assy
WIRING DIAGRAM
0579L±02

I35378
A23
Air Mix Control Servo Motor (Driver Side) A/C Control Assembly
M
MAX
HOT4P±L
A15 AMDH12
MAX
COOL5B
A15 AMDC11
PT 3GR
A16 TPD8
VZ 2Y±B
A16 S5±22
GND 1Y±R
A15 SG±214
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1139
AVENSIS REPAIR MANUAL (RM1018E)
DTC 46 AIR MIX DAMPER CONTROL SERVOMOTOR
CIRCUIT (DRIVER SIDE)
CIRCUIT DESCRIPTION
The air mix damper servo sub±assy is controlled by the A/C amplifier and moves the air mix damper to the
desired position.
DTC No.Detection ItemTrouble Area
46Air mix damper position sensor value does not change even if
A/C amplifier operated air mix damper control servomotor.

Air mix damper servo sub±assy (air mix damper control )

Harness or connector between air mix damper servo sub±
assy (air mix damper control servomotor) and A/C amplifier

A/C amplifier assy
WIRING DIAGRAM
05A8A±02