2005 TOYOTA AVENSIS diagnostic

A81009
STP E10 G−W
6
4B−RDriver
Side J/B
1
ED1 21
1
2 AM2
ALT B
2IR1
B−L15
B
BatteryDriver
Side J/B Engine Room
R/B No. 3
FL MAIN 3
STOP 1
11A
3
3
W Engine Room
R/B No.1
22 DA
1 DN 11IE3
R−W
(LHD)R−W
(LHD)
R−W
(RHD)R−W
(RHD)
3IR1
B−W
(RHD)B−W
(RHD)
20 IE1
B−W
(LHD)B−W
(LHD) 3 24 1
S13
Stop Lamp Switch
B−W B−W
C J9 (LHD)
E J27 (RHD)
J/C
C J8 (LHD)
A
J26 (RHD) Driver
Side J/BIGN I13
Ignition Switch
AM2 IG2
B−R
B−R(LHD)
(RHD) 1IE4
1IP1
18 DA2 DHECM
ST1− E10 14 DA2
DC10
1IR1 6 IE3
G−W
(LHD)G−W
(LHD)
G−W
(RHD)G−W
(RHD)
4IR1
G−W
(RHD)G−W
(RHD)
14 IE2
G−W
(LHD)G−W
(LHD) 05−412
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data usingthe hand−held tester.Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, 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.

A72924
Free Pushed in
432
1
Stop Lamp Switch
Component Side:
S13
A80995
Brake Pedal
Depressed Brake Pedal
Released
ST 1− (+)
E 1 (− )
ECM Connector E
12
E 10
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −413
AVENSIS Supplement (RM 1045E)
1 CHECK OPERATION OF STOP LAMP
(a) Check if the stop lamps go on and off normally when the brake pedal is depressed and released.
NG REPAIR OR REPLACE STOP LAMP SWITCHCIRCUIT
OK
2 INSPECT STOP LAMP SWITCH ASSY
(a) Remove the S 13 stop lamp switch.
(b) Check for continuity between each pair of the terminals.
Standard:
Switch PositionTester ConnectionSpecified Condition
Switch pin free1−2ContinuitySwitch pin free3− 4No continuity
Switch pin pushed in1− 2No continuitySwitch pin pushed in3− 4Continuity
(c) Reinstall the stop lamp switch.
NG REPLACE STOP LAMP SWITCH ASSY
OK
3 READ VALUE OF HAND −HELD TESTER(STP SIGNAL AND ST 1− VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / STOP LIGHT SW” and read its value displayed on
the hand −held tester.
Standard:
Brake PedalSpecified Condition
DepressedSTP signal ON
ReleasedSTP signal OFF
(c) Measure the voltage between the specified terminals of the E10 and E 12 ECM connectors.
Standard:
Tester ConnectionBrake PedalSpecified Condition
ST 1− (E10−1 4)DepressedBelow 1.5 VST 1(E10 14)
− E1 (E 12− 7)Released7.5 to 14V
OK CHECK FOR INTERMITTENT PROBLEMS
(See page 05 −270)
NG

A56986
Wire Harness Side:Stop Lamp Switch Connector
S 13
Front View
A8 1090
E 10
ECM Connector ST
1−
STP
05
−414
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
4 CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH − ECM)
(a) Disconnect the S 13 stop lamp switch connector.
(b) Disconnect the E 10 ECM connector.
(c) Measure the resistance between the wire harness side
connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Stop lamp switch (S 13−1 )− STP (E 10−1 5)Below1
Stop lamp switch (S 13− 3) − ST 1− (E10−1 4)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
Stop lamp switch (S 13−1 ) or STP (E 10 −1 5)− Body ground10 k
or higherStop lamp switch (S 13− 3) or ST 1− (E10−1 4)− Body ground10k
or higher
(d) Reconnect the ECM connector.
(e) Reconnect the stop lamp switch connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM (See page 10− 29)

A79413
From
Speed SensorSkid
Control
ECU4−Pulse
Combination
Meter4−Pulse
ECM 05−408
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0500 VEHICLE SPEED SENSOR ”A”
CIRCUIT DESCRIPTION
The speed sensor for skid control ECU detects the wheel speed and sends the appropriate signals to the
skid control ECU.
The skid control ECU converts these signals into a 4−pulse signal and outputs it to the combination meter.
After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit in-
side the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based
on the frequency of these pulse signals.
DTC No.DTC Detection ConditionTrouble Area
P0500
Conditions (a), (b) and (c) continue for 7 seconds or more:
(2 trip detection logic)
(a) Engine coolant temperature is more than 70_C (158_F)
(b) Engine speed is between 2,000 and 3,500 rpm
(c) Speed signal is not entering to ECMSOpen or short in speed sensor circuit
SSpeed sensor
SCombination meter
SECM
SSkid control ECU
05B5L−07

A81008
ECM
E1017
V−W C11
Combination
Meter Assy
(RHD) V−W 18
J20HJ/C
SPD
(RHD)J20H
(LHD)J10H
(LHD)J10H
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−409
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data usingthe hand−held tester.Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, 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.
1CHECK OPERATION OF SPEEDOMETER
(a) Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG CHECK SPEEDOMETER CIRCUIT (INCLUDE
SPEED SENSOR)
OK

A80462
SPDE2ECM Connector
E13
E10
A62954
Turn Wheel
4.5
to 5.5V
0V
05−410
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
2 READ VALUE OF HAND −HELD TESTER(VEHICLE SPEED)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Start the engine.
(d) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / VEHICLE SPD”.
(e) Check the vehicle speed at the engine speed of 2,000 rpm or more when the vehicle is running. Standard: Same value as the actual vehicle speed.
YES CHECK FOR INTERMITTENT PROBLEMS(See page 05 −270)
NO
3 INSPECT ECM(SP 1 VOLTAGE)
(a) Shift the transmission gear selector lever to the neutral
position.
(b) Jack up the vehicle.
(c) Turn the ignition switch to ON.
(d) Check the voltage between the specified terminals of the E10 and E13 ECM connectors as the wheel is turned
slowly.
Standard:
Tester ConnectionSpecified Condition
SPD (E10 −17) − E2 (E13 −28)Generated intermittently
HINT:
The output voltage should fluctuate up and down similarly to the
diagram on the left when the wheel is turned slowly.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM (See page 10− 29)

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−403
AVENSIS Supplement (RM1045E)
DTC P0488 EXHAUST GAS RECIRCULATION
THROTTLE POSITION CONTROL
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The ECM opens and closes the intake shutter valve (throttle valve) using the rotary solenoid type actuator.
Upon opening and closing the valve, the exhaust gas recirculation volume is properly controlled. Also, en-
gine vibration and noise will be reduced by closing the valve when the engine is stopped.
DTC No.DTC Detection ConditionTrouble Area
P0488
Duty ratio during valve movement control stuck in its maximum
or minimum value for more than1second
(1trip detection logic)
SIntake shutter stuck
SIntake shutter does not move smoothly
SOpen or short in intake shutter circuit
SOpen or short in intake shutter position sensor circuit
SIntake shutter position sensor (built in intake shutter valve)
SECM
HINT:
After confirming DTC P0488, check the intake shutter position in the ”DIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / THROTTLE POS” using the hand−held tester.
Reference:
ConditionIntake Shutter (Throttle Valve) Position
Quickly accelerate the engine from idling to 3,000 rpmOpening angle varies smoothly
05I7P−01

A93021
Malfunction Detection:
Intake Shutter
(Throttle Valve)
Target Opening Angle
100 %
Duty Ratio
Malfunction Counter0% Normal
Abnormal
TimeThreshold
Intake Shutter
(Throttle Valve)
Actual Opening Angle
Duty RatioOpen
Close
Open
Close
Detect P0488Abnormal
Normal
05−404
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
MONITOR DESCRIPTION
ECM opens and closes the intake shutter (throttle valve) by adjusting duration of current flowing to the rotary
solenoid with the duty ratio. If the intake shutter does not move smoothly or stuck, the duty ratio during the
valve movement control increases or decreases largely, the ECM judges the intake shutter abnormal and
illuminates the CHK ENG.