TOYOTA AVENSIS 2005 Service Repair Manual

−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −425
AVENSIS Supplement (RM 1045E)
DTC P0606 ECM/PCM PROCESSOR
DTC P0607 CONTROL MODULE PERFORMANCE
DTC P 1611 IC CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC No.DTC Detection ConditionTrouble Area
P0606ECM internal errorP0606
P0607ECM internal erro r
(1 trip detection logic)S ECMP0607
P 1611(1 trip detection logic)S ECM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the 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.
REPLACE ECM (See page 10− 29)
05CPY −05

A81010
12
E10
2 Engine Room R/B No. 1
IE37
BATT
Battery BB
33
FL MAIN1
1A
1 Engine Room R/B No. 3
EFI
IO17
B−YECM
(LHD) (RHD)
B−R (LHD)
B−Y (RHD)
05−422
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0560 SYSTEM VOLTAGE
CIRCUIT DESCRIPTION
While the ignition switch is OFF, the battery voltage is supplied to terminal BATT of the ECM for storing DTCs
and fuel injection feedback learning values.
DTC No.DTC Detection ConditionTrouble Area
P0560
Condition (a) or (b) continues:
(a) Significant decrease in battery voltage
(b) Open in back−up power source circuit
(1 trip detection logic)SOpen in back−up power source circuit
SLow battery voltage
SECM
HINT:
If DTC P0560 appears, the ECM does not store other DTCs.
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.
05CPX−05

A82884
Engine Room R/B No.1:
EFI Fuse
A80463
BATT (+)
E10E12
E1 ( −)
ECM Connector
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −423
AVENSIS Supplement (RM1045E)
1 CHECK FUSE(EFI FUSE)
(a) Remove the EFI fuse from the engine room R/B No. 1.
(b) Check for continuity in the EFI fuse.
Standard: Continuity
(c) Reinstall the EFI fuse.
NG CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO FUSE
OK
2 INSPECT ECM(BATT VOLTAGE)
(a) Measure the voltage between the specified terminals of the E10 and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
BATT (E10 −2) −E1 (E12 −7)9to14V
OK REPLACE ECM (See page 10− 29)
NG

A82885
Engine Room R/B No.1:
EFI Fuse
A80464
BATT
ECM ConnectorE10
05−424
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
3 CHECK HARNESS AND CONNECTOR(EFI FUSE−ECM, EFI FUSE−BATTERY)
(a) Check the harness and connectors between the EFI fuse
and ECM.
(1) Remove the EFI fuse from the engine room R/B
No.1.
(2) Disconnect the E10 ECM connector.
(3) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
EFI fuse (2)−BATT (E10−2)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
EFI fuse (2) or BATT (E10−2)−Body ground10 k
or higher
(4) Reinstall the EFI fuse.
(5) Reconnect the ECM connector.
(b) Check the harness and connectors between the EFI fuse
and battery.
(1) Remove the EFI fuse from the engine room R/B No.
1.
(2) Disconnect the positive battery cable.
(3) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Battery positive cable−EFI fuse (1)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
Battery positive cable or EFI fuse (1)−Body ground10 k
or higher
(4) Reinstall the EFI fuse.
(5) Reconnect the positive battery terminal.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
4 INSPECT BATTERY(VOLTAGE)
(See page19−26 of Pub. No. RM1018E AVENSIS REPAIR MANUAL)
NG REPAIR OR REPLACE BATTERY
OK
REPLACE JUNCTION BLOCK

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−411
AVENSIS Supplement (RM1045E)
DTC P0504 BRAKE SWITCH ”A”/”B” CORRELATION
CIRCUIT DESCRIPTION
In this system, the signal of the stop lamp switch is used to judge whether the brake system is abnormal or
not.
The stop lamp switch has a duplex system (signals STP and ST1−) to detect abnormality. When the signals
of depressing and releasing the brake pedal are detected simultaneously, the ECM interprets this as mal-
function of the stop lamp switch.
HINT:
Normal condition is as shown in the table below.
SignalBrake Pedal ReleasedIn TransitionBrake Pedal Depressed
STPOFFONON
ST1−ONONOFF
DTC No.DTC Detection ConditionTrouble Area
P0504
Conditions (a) and (b) continue for 0.5 second or more:
(1trip detection logic)
(a) Ignition switch is in ON
(b) STP signal is OFF when the ST1−signal is OFF (when
brake pedal is released)
SShort in stop lamp switch signal circuit
SStop lamp switch
SECM
05CPW−03

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