2005 TOYOTA AVENSIS wiring

A78602
Reference (Sensor 2 System Diagram):Heated Oxygen Sensor
EFI Relay
Heater
Sensor OX1B
HT1BECM
From
Battery EFI Fuse
E2MREL
OX
HT
E1
+B
05–46
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0037 OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0037Heated current is 0.25 A or less when heater operates
(1 trip detection logic)
 Open in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
P0038Heater current exceeds 2 A when heater operates
(1 trip detection logic)
Short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 2)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNW–02

A78602
EFI RelayHeater
Sensor OX1A
HT1AECM
From
Battery EFI Fuse
E2
MREL
Reference (Sensor 1 System Diagram):
Heated Oxygen Sensor
OX
HT
E1
+B
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–43
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0031 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 1)
DTC P0032 OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05–74.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0031Heated current is 0.8 A or less when heater operates
(1 trip detection logic)
 Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
P0032Heated current exceeds 10 A when the heater operates
(1 trip detection logic)
Open or short in heater circuit of heated oxygen sensor
 Heated oxygen sensor heater (sensor 1)
 EFI relay
 ECM
HINT:
Sensor 1 refers to the sensor mounted in front of the Three–Way Catalytic Converter (TWC) and lo-
cated near the engine assembly.
Sensor 2 refers to the sensor mounted behind the TWC and located far fro\
m the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05–74.
05KNV–02

05–42
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0016 CRANKSHAFT POSITION – CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR
A)
CIRCUIT DESCRIPTION
Refer to DTC P0335 and P0339 on page 05–136.
DTC No.DTC Detection ConditionTrouble Area
P0016Deviation in crankshaft position sensor signal and camshaft
position signal (2 trip detection logic)Mechanical system (Jumped tooth of timing chain or chain
stretched)
 ECM
WIRING DIAGRAM
Refer to DTC P0335 and P0339 on page 05–136.
INSPECTION PROCEDURE
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition\
when
malfunctions are detected. When troubleshooting, freeze frame data can h\
elp determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean \
or rich, and other data
from the time the malfunction occurred.
1 CHECK VALVE TIMING(CHECK FOR LOOSENESS AND JUMPED TEETH ON
TIMING CHAIN) (See page 14–49 of Pub. No. RM1018E AVENSIS)
(a) Check for looseness or a jumped tooth of the timing chain.
OK: The matchmarks of the crankshaft pulley and camshaft pulley are alig\
ned.
NG ADJUST VALVE TIMING (See page 14–49 of Pub.No. RM1018E AVENSIS)
(REPAIR OR REPLACE TIMING CHAIN)
OK
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)
05B57–07

A79123
I13
Ignition Switch
4
6
IE4B–R
IP1 1
1(LHD)
B–R
11B–Y B–R
DHIGN
DA18 2Driver Side J/B
22
EFI
1 AM2
1
1A 1
B–GEngine Room
R/B No.1
Engine Room
J/B No.1 (RHD)
14A
14BEngine Room
J/B No.4
B–G
FL MAIN
BatteryB–W
(LHD)B–W
(LHD)
J8
J/C CC B–W
(RHD)B–W
(RHD)
J/C J26 J27AE
ECM
IGSW
E99
GR
IE12
GR
E104
MREL
44
51
EFI
Relay+B 1
E9 B–R
Engine Room
R/B No.4
Engine Room
R/B No.444
4
4E1 5
E13
IK1 8
1
2
EH
ECW–B
B–RBR B–W
EFI
No.132
B–R
EA1 12
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–195
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
ECM POWER SOURCE CIRCUIT
CIRCUIT DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to terminal IGSW of the ECM. The
ECM ”MREL” output signal causes a current to flow to the coil, closing the contacts of the EFI relay and sup-
plying power to terminal +B of the ECM.
WIRING DIAGRAM
05KOF–02

05–192
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P2121 THROTTLE/PEDAL POSITION SENSOR/SWITCH ”D” CIRCUIT
RANGE/PERFORMANCE
HINT:
This DTC is related to the accelerator pedal position senso r.
CIRCUIT DESCRIPTION
Refer to DTC P2120 on page 05–184.
DTC No.DTC Detection ConditionTrouble Area
P2121
Conditions (a) and (b) continue for 0.5 seconds:
(a) Difference between VPA1 and VPA2 exceeds the threshold
(b) IDL is OFF Accelerator pedal position sensor circuit
 Accelerator pedal position sensor
 ECM
HINT:
When DTC P2121 is detected, check the output voltage of the accelerator peda\
l position sensor by selecting
Powertrain / Engine and ECT / Data List / Accelerator POS No. 1 and Accelerator POS No. 2 on the int\
elligent
tester ll.
Reference:
Accelerator Pedal Position (Voltage Output)
Trouble AreaAccelerator Pedal ReleasedAccelerator Pedal DepressedTrouble AreaAccelerator POS
No. 1Accelerator POS No. 2Accelerator POS No. 1Accelerator POS No. 2
Normal condition0.5 to 1.1 V1.2 to 2.0 V2.6 to 4.5 V3.4 to 5.0 V
VCP circuit open0 to 0.2 V0 to 0.2 V0 to 0.2 V0 to 0.2 V
VPA circuit open or ground short0 to 0.2 V1.2 to 2.0 V0 to 0.2 V3.4 to 5.0 V
VPA2 circuit open or ground short0.5 to 1.1 V0 to 0.2 V2.6 to 4.5 V0 to 0.2 V
EPA circuit open4.5 to 5.0 V4.5 to 5.0 V4.5 to 5.0 V4.5 to 5.0 V
WIRING DIAGRAM
Refer to DTC P2120 on page 05–184.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition\
when
malfunctions are detected. When troubleshooting, freeze frame data can h\
elp determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean \
or rich, and other data
from the time the malfunction occurred.
05B5S–05

A96013
A20
Accelerator Pedal
Position Sensor
VPA2
VPA1
EP1 VCP1 VCP2
6
EP2E927ECM
VPA2
VPA
EPA VCPA EPA2 VCP2 4
22
13
64
55
31
(LHD)(RHD)
B (RHD)
W (RHD)
Y (RHD)
B (RHD)
G (RHD)
Y (RHD)G (LHD) W (LHD) W (LHD)
Y (LHD) Y (LHD) B (LHD) B (LHD)
B (LHD)
Y (LHD) Y (LHD) G (LHD) B (LHD)IG2
IG2
IG2
IG2
IG2
IG27
2
3
5
6
1
E928 E922 E926 E929 E923
FI7052DepressedReleased
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–187
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 READ VALUE OF INTELLIGENT TESTER II(ACCELERATOR POS NO.1 AND
ACCELERATOR POS NO.2)
(a) Connect the intelligent tester ll to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tes-
ter ll ON.
(c) Select the following menu items: Powertrain / Engine and
ECT / Data List / Accelerator POS No. 1 and Accelerator
POS No. 2.
(d) Read the value.
Standard:
Accelerator PedalAccelerator POS No. 1Accelerator POS No. 2
Released0.5 to 1.1 V1.2 to 2.0 V
Depressed2.6 to 4.5 V3.4 to 5.0 V

–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–177
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P2111 THROTTLE ACTUATOR CONTROL SYSTEM
– STUCK OPEN
DTC P2112 THROTTLE ACTUATOR CONTROL SYSTEM – STUCK CLOSED
CIRCUIT DESCRIPTION
The throttle actuator is operated by the ECM and it opens and closes the thr\
ottle valve using gears. The
opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttl\
e
body. And, it provides feedback to the ECM to control the throttle actuator \
in order to control the throttle valve
opening angle properly in response to the driving condition. If this malfunctio\
n is detected, the ECM shuts
down the power for the throttle actuator, and the throttle valve is locked at a certain angle by the return spring.
Also, the whole electronically controlled throttle operation is cancelled until th\
e system returns to normal and
the ignition switch is turned to OFF.
HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle\
cable.
DTC No.DTC Detection ConditionTrouble Area
P2111Throttle actuator locked during ECM ordering it to close (1 trip
detection logic) Throttle actuator
 Throttle body assembly
 Throttle valve
P2112Throttle actuator locked during ECM ordering it to open (1 trip
detection logic)Throttle actuator
 Throttle body assembly
 Throttle valve
WIRING DIAGRAM
Refer to DTC P2102 on page 05–174.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition\
when
malfunctions are detected. When troubleshooting, freeze frame data can h\
elp determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean \
or rich, and other data
from the time the malfunction occurred.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P2111 AND/OR P2112)
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester II ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d) Read DTCs. Result:
Display (DTC Output)Proceed To
P2111 or P2112A
P2111 or P2112 and other DTCsB
HINT:
If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.
05JOM–03

A93656
ECM
STA E1312
B–Y
IJW–BJ12 BB J13J/C W–B 1 5
32 1AM2 2
B–G
B–R1
S51S4
Starter
Battery7
IK1
FL MAIN 4B 4A
Engine Room
J/B No. 4
BB 55
5 1
11A
B–GB–R
IE41
(LHD)IP11
(RHD)B–R
Engine
Room
R/B No. 1
Engine
Room
J/B No.1
Driver
Side R/BST
Relay
2DJ
9DA Driver
Side J/B B–R
B–RI13
Ignition Switch
4 5 B–Y
B–Y
6
2ST 1
6 Fuse
Block
B–WB–YB–Y
J12 AC J13
A J12 1
1
(M/T)
B–W
(A/T)
N1
Neutral Start Switch96B–Y
(A/T)E1 E13
EH BR
55
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–171
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0617 STARTER RELAY CIRCUIT HIGH
CIRCUIT DESCRIPTION
While the engine is being cranked, the positive battery voltage is applied to terminal STA of the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0617
When conditions (a), (b) and (c) are met when the battery volt-
age of 10.5 V or more is applied for 20 seconds
(a) Vehicle speed greater than 20 km/h (12 mph)
(b) Engine RPM greater than 1,000 rpm
(c) STA signal ONShort in park/neutral position switch circuit (MMT)
Short in STA circuit
Park/neutral position switch (MMT)
ECM
WIRING DIAGRAM
05KOC–02