TOYOTA AVENSIS 2005 Service Repair Manual

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DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–191
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
6 CHECK IF DTC OUTPUT RECURS(ACCELERATOR PEDAL POSITION SENSOR
DTCS)
(a) Connect the intelligent tester ll to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Clear the DTC(s) ( see page 05–18).
(d) Start the engine.
(e) Run the engine at idling speed for 15 seconds or more.
(f) Select the following menu items: Powertrain / Engine and ECT / DTC.
(g) Read DTCs ( see page 05–18 ).
Result:
Display (DTC Output)Proceed To
P2120, P2122, P2123, P2125, P2127, P2128 and/or P2138A
No outputB
B NORMAL
A
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)

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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

05–178
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DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
B GO TO RELEVANT DTC CHART (See page 05–27 )
A
2 INSPECT THROTTLE BODY ASSY(VISUAL LY CHECK THROTTLE VA LVE)
(a) Check for contamination between the throttle valve and the housing. If n\
ecessary, clean the throttle
body. And check that the throttle valve moves smoothly.
OK: The throttle valve is not contaminated with foreign objects and can \
move smoothly.
NG REPLACE THROTTLE BODY ASSY(See page 10–6 )
OK
3 CHECK IF DTC OUTPUT RECURS(DTC P2111 AND/OR P2112)
(a) Clear the DTC(s) ( see page 05–18).
(b) Start the engine, and depress and release the accelerator pedal quickly (to fully open and fully clos\
e the throttle valve).
(c) Connect the intelligent tester II to the DLC3.
(d) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(e) Select the following menu items: Powertrain / Engine and ECT / DTC.
(f) Read DTCs.
Result:
Display (DTC Output)Proceed To
No DTCA
P2111 and/or P2112B
B REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)
A
CHECK FOR INTERMITTENT PROBLEMS ( See page 05–9)

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

05–172
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DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
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 READ VALUE OF INTELLIGENT TESTER II(STA SIGNAL)
(a) Connect the intelligent tester ll to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / Data List\
/ Starter SIG.
(d) Check the result when the ignition switch is turned to the ON and START positions. Standard:
Ignition Switch PositionONSTART
STARTER SIGOFFON
OK PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05–12 )
NG

A65743
STA E13
ECM Connector
A79097
ST Relay Driver Side R/B LHD:
A79098
ST Relay Driver Side R/B RHD:
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–173
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
2 CHECK HARNESS AND CONNECTOR(ECM – ST RELAY)
(a) Disconnect the E13 ECM connector.
(b) Remove the ST relay from the driver side R/B.
(c) Check the resistance.
Standard (Check for open):
Tester ConnectionSpecified Condition
ST relay (1) – STA (E13–12)Below 1 Ω
Standard (Check for short):
Tester ConnectionSpecified Condition
ST relay (1) or STA (E13–12) – Body ground10 kΩ or higher
(d) Reconnect the ECM connector.
(e) Reinstall the ST relay.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)

05–170
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0604 INTERNAL CONTROL MODULE RANDOM
ACCESS MEMORY (RAM) ERROR
DTC P0606 ECM/PCM PROCESSOR
DTC P0607 CONTROL MODULE PERFORMANCE
DTC P0657 ACTUATOR SUPPLY VOLTAGE
CIRCUIT/OPEN
CIRCUIT DESCRIPTION
The ECM continuously monitors its internal memory status, internal circuits, and output signals to the throttle
actuator. This self–check ensures that the ECM is functioning properly. If any malfunction is detected, the
ECM will set appropriate DTCs and illuminate the MIL.
The ECM memory status is diagnosed by internal ”mirroring” of the main CPU and the sub CPU to detect
Random Access Memory (RAM) errors. The two CPUs also perform continuous mutual monitoring.
DTC No.DTC Detection ConditionTrouble Area
P0604
P0606
P0607
P0657
ECM internal errorECM
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.
REPLACE ECM (See page 10–65 of Pub. No. RM1018E AVENSIS)
05B5M–07

A79413
From
Speed SensorSkid
Control
ECU4–Pulse
Combination
Meter4–Pulse
ECM 05–158
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0500 VEHICLE SPEED SENSOR ”A”
CIRCUIT DESCRIPTION
The speed sensor detects the wheel speed and sends appropriate signals to the skid control ECU. The skid
control ECU converts these wheel speed signals into a 4–pulse signal and outputs it to the ECM via the com-
bination meter. 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 8 seconds or more
(2 trip detection logic):
(a) Engine coolant temperature is more than 60C (140F)
(b) Engine speed is between 2,000 rpm and 3,000 rpm
(c) No speed signal is input to ECMOpen or short in speed sensor circuit
Speed sensor
Combination meter
ECM
Skid control ECU
05B5L–14

A93655
17
E10SPDECM
V–W 18
C11 Combination Meter
J/C
5
E13 E15 V
BR
EHJ10H
V–W
(LHD) J20H
(RHD)J10H
(LHD) J20H
(RHD)
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–159
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 CHECK 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 reading is normal.
NG CHECK SPEEDOMETER CIRCUIT
(See page 05–1510 of Pub. No. RM1018E AVEN-
SIS)
OK

A18294
SPD (+)
E1 (–)
E10
ECM Connector
E13
A62954
Turn Wheel
4.5
to 5.5V
0V
05–160
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
2 READ VALUE OF INTELLIGENT TESTER II(VEHICLE SPEED)
(a) Connect the intelligent tester ll to the DLC3.
(b) Start the engine and turn the intelligent tester ll ON.
(c) On the intelligent tester ll, select the following menu items: Powertrai\
n / Engine and ECT / Data List / Vehicle SPD.
(d) Check the vehicle speed at the engine speed of 2,000 rpm or more when th\
e vehicle is running. Standard: Same value as the actual vehicle speed.
YES CHECK FOR INTERMITTENT PROBLEMS (See page 05–9 )
NO
3 INSPECT ECM(SPD 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) Measure the voltage between the terminals of the E10
and E13 ECM connectors as the wheel is turned slowly.
Standard:
Tester ConnectionSpecified Condition
SPD (E10–17) – E1 (E13–5)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 10–65 of Pub. No. RM1018E AVENSIS)