engine coolant TOYOTA AVENSIS 2005 Service Manual PDF

A75743
Engine Coolant
Temp. SensorECM
A76786
Wire Harness Side
Engine Coolant Temperature
Sensor ConnectorE2
A75742
Engine Coolant
Temp. Sensor
ECM
A80457
THW
E2
E13
ECM Connector
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±595
AVENSIS REPAIR MANUAL (RM1018E)
2READ VALUE OF HAND±HELD TESTER(CHECK FOR OPEN IN WIRE HARNESS)
(a)Disconnect the E2 engine coolant temperature sensor
connector.
(b)Connect terminals 1 and 2 of the engine coolant tempera- ture sensor wire harness side connector.
(c)Turn the ignition switch ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COOLANT TEMPº and read its value displayed on
the hand±held tester.
Temperature: 140
C (284
F) or more
OKCONFIRM GOOD CONNECTION AT SENSOR. IF OK, REPLACE ENGINE COOLANT TEMP.
SENSOR
NG
3READ VALUE OF HAND±HELD TESTER(CHECK FOR OPEN IN ECM)
(a)Disconnect the E2 engine coolant temperature sensor connector.
(b)Connect terminals THW and E2 of the E13 ECM connec- tor.
HINT:
Before checking, do a visual and contact pressure check for the
ECM connector.
(c)Turn the ignition switch ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COOLANT TEMPº and read its value displayed on
the hand±held tester.
Temperature: 140
C (284
F) or more
OKREPAIR OR REPLACE HARNESS OR CONNECTOR
NG
CONFIRM GOOD CONNECTION AT ECM. IF OK, REPLACE ECM (See page 10±65)

A75766
Engine Coolant
Temp. SensorECM
A75744
Engine Coolant
Temp. SensorECM
A80458
E13
ECM Connector
THW
05±596
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
4READ VALUE OF HAND±HELD TESTER(CHECK FOR SHORT IN WIRE HARNESS)
(a)Disconnect the E2 engine coolant temperature sensor connector.
(b)Turn the ignition switch ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COOLANT TEMPº and read its value displayed on
the hand±held tester.
Temperature: ±40
C (±40
F)
OKREPLACE ENGINE COOLANT TEMPERATURE SENSOR
NG
5READ VALUE OF HAND±HELD TESTER(CHECK FOR SHORT IN ECM)
(a)Disconnect the E13 ECM connector.
(b)Turn the ignition switch ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COOLANT TEMPº and read its value displayed on
the hand±held tester.
Temperature: ±40
C (±40
F)
OKREPAIR OR REPLACE HARNESS OR CONNECTOR
NG
REPLACE ECM (See page 10±65)

A82939
+B2
+B1EGR2
EGR1 EGR4
EGR3
05±630
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK OTHER DTC OUTPUT(BESIDES P0400 AND/OR P0403)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed
P0400 and/or P0403 are outputA
P0400 and/or P0403 and other DTCs are outputB
HINT:
If any other codes besides P0400 and/or P0403 are output, perform the trou\
bleshooting for those DTCs first. BGO TO RELEVANT DTC CHART(See page 05±544)
A
2READ VALUE OF HAND±HELD TESTER(MASS AIR FLOW RATE)
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Start the engine.
(d)Warm up the engine, the engine coolant temperature should be above 75
C (167
F) and bellow 90
C
(194
F).
(e)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAFº.
(f)Check that the MAF reading during idling. Result: MAF greater than 4 g/s but less than 16 g/s
(g)Force the EGR valve to operate with a hand±held tester, make the valve opening 0, and check that
the AFM reading during idling.
Result: MAF greater than 10 g/s but less than 16 g/s
NGREPLACE EGR VALVE ASSY (See page 14±286)
OK
3INSPECT EGR VALVE ASSY
(a)Check the EGR valve for resistance. (1)Measure the resistance between the specified ter-minals.
Resistance:
Terminal No.Specified condition
+B1 ± EGR119.6
1.4

+B1 ± EGR219.6
1.4

+B2 ± EGR319.6
1.4

+B2 ± EGR419.6
1.4

NGREPLACE EGR VALVE ASSY
(See page 14±286)
OK

A81017
GeneratorGlow Plug ECMGLOW
Relay Battery
A81018
Ignition Switch
Glow Plug
Engine Speed
Starting EngineAfter Glow Time OFFOFF ON ON
OFF After Glow System
(sec.)
1
020
6840
104(
C)
(
F)
After Glow Time
Engine Coolant Temperature 120 05±622
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0380 GLOW PLUG/HEATER CIRCUIT ºAº
CIRCUIT DESCRIPTION
The glow plug is mounted inside the engine combustion room. To ensure efficient engine starting with a cold
engine, the ECM calculates time the current needs to flow into the glow plug depending on the engine cool-
ant temperature after the ignition switch is turned ON. The ECM then turns on the glow relay and permits
the current to flow into the glow plug. The glow plug is then heated and enhances fuel combustion with the
cold engine.
This DTC will be set if there is open in glow plug itself or its circuit.
The ECM performs the after glow for a certain period of time depending on the engine coolant temperature
after the engine has been started. After glow reduces a diesel engine knocking, a white smoke, and etc with
a cold engine.
05CPT±01

± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±623
AVENSIS REPAIR MANUAL (RM1018E)DTC No.
DTC Detection ConditionTrouble Area
P0380
When the glow plug is turned from ON to OFF, or vice±versa,
conditions (a) and (b) are satisfied:
(a) Battery voltage dos not change
(b) Duty signal from terminal M of the generator does not
change
Open or short in glow plug circuit

Glow fuse

Glow relay

Glow plug

ECM
MONITOR DESCRIPTION
When starting a cold engine, the ECM supplies the current to the glow plug for a certain period of time. As
the supplying current to the glow plug is terminated, the large current is suddenly cut off, therefore the battery
voltage then varies and also terminal M output (duty ratio) of the generator varies. If these variations are not
occurred when the glow plug is turned from ON to OFF, or vice±versa, the ECM realizes that the current has
not been supplied to the glow plug, and interprets this as open malfunction of the glow plug or glow plug
circuit.
MONITOR STRATEGY
Required sensorsGlow plug circuit
Frequency of operationTwice per driving cycle
Duration3 min.
CHK ENG operation2 driving cycles
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Battery voltage11 V±
Engine speed700 rpm2,000 rpm
Engine coolant temperature±40C (104F)
Engine speed is stable±
Time after engine start8 sec.±
Any switches that vary electrical load
have not been being operated±
The monitor will not run if the generator circuit is malfunctioning
TYPICAL MALFUNCTION THRESHOLDS
Threshold
When the battery voltage, or terminal M output (duty ratio) of the generator does not change, despite turning the glow plug from ON to OFF, or
vice±versa

A66060
E13E9
E2GREL
ECM Connector
A80463
BATT (+)
E10E12
E1 (±)
ECM Connector
05±628
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
8INSPECT ECM(GREL VOLTAGE)
(a)Turn the ignition switch START.
(b)Measure the voltage between the specified terminals of the E9 and E13 ECM connectors.
Voltage:
Symbols (Terminal No.)ConditionSpecified Condition
GREL (E9±14) ±
E2 (E13±28)Engine coolant temp. is40
C (104
F) or less9 to 14 V
NGREPLACE ECM (See page 10±65)
OK
9INSPECT ECM(BATT VOLTAGE)
(a)Measure the voltage between the specified terminals of the E10 and E12 ECM connectors.
Standard:
Symbols (Terminal No.)Specified Condition
BATT (E10±2) ± E1 (E12±7)9 to 14 V
NGREPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY ± ECM)
OK
CHECK FOR INTERMITTENT PROBLEMS (See page 05±528)

0567W±11
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±879
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the DTC check but the trouble still o\
ccurs, check the circuits for each
symptom in the order given in the charts on the following pages and proceed to \
the page given for trouble-
shooting.
The Matrix Chart is divided into 3 chapters.

If the instruction ºProceed to next circuit inspection shown on matri\
x chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then ch\
eck
and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
SymptomSuspect AreaSee page
No up±shift (A particular gear, from 1st to O/D gear, is not up±
shifted)ECM01±32
No down±shift (A particular gear, from O/D to 1st gear, is not
down±shifted)ECM01±32
No lock±up or No lock±up off
4. Stop light switch circuit
5. Engine coolant temp. sensor circuit
6. Throttle position sensor circuit
7. ECM05±905
05±161
05±161
01±32
Shift point too high or too lowECM01±32
No gear change by shifting into º+º or º±º while the shif\
t lever is in
the Sposition1. Transmission control switch circuit
2. ECM05±91001±32
Up±shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ATF temp. sensor circuit
3. ECM05±161
05±88201±32
Harsh engagement (N
D)ECM01±32
Harsh engagement (Lock±up)ECM01±32
Harsh engagement (Any driving range)ECM01±32
Poor accelerationECM01±32
Engine stalls when starting off or stoppingECM01±32
No kick±down1. Kick±down switch circuit
2. ECM05±908
01±32

C54864
THOE2
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±943
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0711TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº PERFORMANCE
CIRCUIT DESCRIPTION
The ATF temperature sensor converts the fluid temperature into a resistance v\
alue which is input into the
ECM.
DTC No.DTC Detection ConditionTrouble Area
P0711
Both (a) and (b) are detected: (2±trip detection logic)
(a)After 12 sec. of engine start, temp. of atmosphere and that
of engine coolant is more than ±10
C
(b)After normal driving for over 20 min. and 10 km, ATF temp.
is less than 10
C

Open or short in ATF temperature sensor circuit

ATF temperature sensor

ECM
WIRING DIAGRAM
See page 05±941.
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminals THO and E2. OK:
Temperature: C ( F)Resistance: k

10 (50)6.4
110 (230)0.2
(c) Measure the resistance between body ground and that
THO as well as E2 of the transmission wire connector.
OK:
Resistance: 1M
or higher
NG REPAIR OR REPLACE TRANSMISSION WIRE
OK
05C98±01

0567W±12
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±935
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the DTC check but the trouble still o\
ccurs, check the circuits for each
symptom in the order given in the charts on the following pages and proceed to \
the page given for trouble-
shooting.
The Matrix Chart is divided into 3 chapters.

If the instruction ºProceed to next circuit inspection shown on matri\
x chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then ch\
eck
and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
SymptomSuspect AreaSee page
No up±shift (A particular gear, from 1st to O/D gear, is not up±
shifted)ECM01±32
No down±shift (A particular gear, from O/D to 1st gear, is not
down±shifted)ECM01±32
No lock±up or No lock±up off
1. Stop light switch circuit
2. Engine coolant temp. sensor circuit
3. Throttle position sensor circuit
4. ECM05±947
05±309
05±309
01±32
Shift point too high or too lowECM01±32
No gear change by shifting into º+º or º±º while the shif\
t lever is in
the Sposition1. Transmission control switch circuit
2. ECM05±97201±32
Up±shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ATF temp. sensor circuit
3. ECM05±309
05±941
05±94301±32
Harsh engagement (N
D)ECM01±32
Harsh engagement (Lock±up)ECM01±32
Harsh engagement (Any driving range)ECM01±32
Poor accelerationECM01±32
Engine stalls when starting off or stoppingECM01±32
No kick±down1. Kick±down switch circuit
2. ECM05±970
01±32

C54864
THOE2
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)05±1005
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0711TRANSMISSION FLUID TEMPERATURE
SENSOR CIRCUIT RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The ATF temperature sensor converts the fluid temperature into a resistance v\
alue which is input into the
ECM.
DTC No.DTC Detection ConditionTrouble Area
P0711
Both (a) and (b) are detected: (2±trip detection logic)
(a)After 12 sec. of engine start, temp. of atmosphere and that
of engine coolant is more than ±10 C
(b)After normal driving for over 20 min. and 10 km, ATF temp.
is less than 10 C

Open or short in ATF temp. sensor circuit

Transmission wire (ATF temperature sensor)

ECM
WIRING DIAGRAM
See page 05±1003.
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminals THO and E2.
OK:
Temperature: C ( F)Resistance: k

10 (50)6.4
110 (230)0.2
(c) Check the continuity between the wire harness side con-
nectors.
OK:
Standard (Check for a short):
SymbolsSpecified condition
THO ± Body groundNo continuityE2 ± Body groundNo continuity
NG REPAIR OR REPLACE TRANSMISSION WIRE
OK
05C8G±01