2005 TOYOTA AVENSIS sensor

A88251N·m (kgf·cm, ft·lbf)
: Specified torqueKnock Sensor
Knock Sensor
Connector
Intake Manifold Insulator No. 2
Surge Tank Stay No. 1
x2 Fuel Injector
ConnectorFuel Pressure Sensor
Connector
20 (204, 15)
21 (210, 15)
9.8 (100, 7)
− ENGINE CONTROL SYSTEMKNOCK SENSOR (2AZ−FSE)
10−15
AVENSIS Supplement (RM1045E)

A84677
Ohmmeter
−20 0 20 40 60 80
(−4) (32) (68) (104)(140)(176)
Temperature_C(_F) 30
0.2 0.515 1020
Resistance k

A84678
Ohmmeter
−20 0 20 40 60 80
(−4) (32) (68) (104)(140)(176)
Temperature_C(_F) 30
0.2 0.515 1020
Resistance k

− ENGINE CONTROL SYSTEMSFI SYSTEM (2AZ−FSE)
10−3
AVENSIS Supplement (RM1045E)
(b) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester connectionSpecified Condition
4 (THA)−5 (E2)13.6 to 18.4 k
at−20_C(−4_F)
4 (THA)−5 (E2)2.21 to 2.69 k
at 20_C (68_F)
4 (THA)−5 (E2)0.493 to 0.667 k
at 60_C (140_F)
If the resistance is not as specified, replace the mass air flow
meter.
3. INSPECT ENGINE COOLANT TEMPERATURE
SENSOR
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester connectionSpecified Condition
1 (E2)−2 (THW)2.32 to 2.59 k
at 20_C (68_F)
1 (E2)−2 (THW)0.310 to 0.326 k
at 80_C (176_F)
NOTICE:
In case of checking the engine coolant temperature sensor
in water, be careful not to allow water to go into the termi-
nals, and after checking, dry the engine coolant tempera-
ture sensor.
If the resistance is not as specified, replace the engine coolant
temperature sensor.

A88283
Ohmmeter
A84680
Ohmmeter
A88282
Ohmmeter
Voltmeter 10−4
− ENGINE CONTROL SYSTEMSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
4. INSPECT THROTTLE BODY ASSY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1(M−)−2 (M+)0.3 to 100
at 20_C (68_F)
3 (E2)−5 (VC)1.2 to 3.2 k
at 20_C (68_F)
If the resistance is not as specified, replace the throttle body.
5. INSPECT KNOCK SENSOR
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
1 (Ground)−2 (Output)120 to 280 k
at 20_C (68_F)
If the resistance is not specified, replace the knock sensor.
6. INSPECT ACCELERATOR PEDAL ROD ASSY
(a) Inspect the resistance.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Standard:
Tester ConnectionSpecified Condition
3 (EP1)−6 (VCP1)2.25 to 4.75 k

1 (EP2)−4 (VCP2)2.25 to 4.75 k

If the resistance is not as specified, replace the accelerator ped-
al rod.
(b) Inspect the voltmeter.
(1) Using a voltmeter, measure the voltage between
the terminals.
Standard:
Tester ConnectionSpecified Condition
3 (EP1)−5 (VPA1)0.4 to 4.6 V
1 (EP2)−2 (VPA2)0.9 to 4.7 V
If the voltage is not as specified, replace the accelerator pedal
rod.

05−610−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
DTC P0796 PRESSURE CONTROL SOLENOID ”C”
PERFORMANCE (SHIFT SOLENOID VALVE
SL3)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
troubles of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0796The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve SL3 remains open or closed
S Valve body is blocked
S Shift solenoid valve SL3
S Automatic transaxle (clutch, brake or gear etc.)
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position ( 1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand −held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CW2 −02

GND
C93866
1 V/DIV
1 ms/DIV
G31763
ECM
NC+
NC−
E1234 26
LG
LG−B 2 1 C5
Counter Gear Speed Sensor
E12
5V
E1
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−607
AVENSIS Supplement (RM1045E)
DTC P0793 INTERMEDIATE SHAFT SPEED SENSOR
”A”
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC)
with the direct clutch speed sensor signal (NT), the ECM detects the shift timing of the gears and appropriate-
ly controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shift-
ing is performed.
DTC No.DTC Detection ConditionTrouble Area
P0793
ECM detects conditions (a), (b) and (c) continuity for 5 sec. or
more: (1−trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW) is OFF
(c) Speed sensor (NC): less than 300 rpmSOpen or short in transmission revolution sensor NC (speed
sensor NC) circuit
STransmission revolution sensor NC (speed sensor NC)
SECM
Reference (Using an oscilloscope):
Check the waveform between the terminals NC+ and
NC−of the ECM connector.
Standard: Refer to the illustration.
TerminalNC+−NC−
Tool setting1V/DIV, 1ms/DIV
Vehicle conditionVehicle speed 30 km/h (19 mph): (3rd gear)
Engine speed 1,400 rpm
MONITOR DESCRIPTION
The NC terminal of ECM detects a revolution signal from the speed sensor (NC) (counter gear rpm). The
ECM calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd, 4th or 5th gear in the shift position of D, if the counter gear revolu-
tion is less than 300 rpm
*1although the output shaft revolution is more than 1,000 rpm*2, the ECM detects
the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 50 km/h (31 mph) or more.
WIRING DIAGRAM
05JLK−01

BR3795OK NG
05−608− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the hand−held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the hand−held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ”ON” button of the hand−held tester.
(f) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST”.
(g) According to the display on tester, read the ”DATA LIST”.
ItemMeasurement Item/
Range (display)Normal Condition
SPD (NC)Counter Gear Speed/
display: 50 r/min
[HINT]
3rd when shift lever position is D position (After
warming up the engine);
SIntermediate shaft speed (NC) becomes close
to the engine speed.
HINT:
SSPD (NC) is always 0 while driving:
Open or short in the sensor or circuit.
SSPD (NC) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph)
or more:
Sensor trouble, improper installation, or intermittent connection trouble of the circuit.
1INSPECT SPEED SENSOR INSTALLATION
(a) Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and transaxle case.
NG REPLACE SPEED SENSOR(NC)
OK

C58536
1
2
Sensor Side:
(Connector Front View):
C5
C82158C91565
NC+
NC −
E13E12E11E10E9
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−609
AVENSIS Supplement (RM1045E)
2 INSPECT SPEED SENSOR(NC)
(a) Disconnect the speed sensor connector from the trans-
axle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 _ C (68 _ F)
1 − 2560 to 680

NG REPLACE SPEED SENSOR(NC)
OK
3 CHECK HARNESS AND CONNECTOR(SPEED SENSOR − ECM)
(a) Connect the speed sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 _ C (68 _ F)
E12 − 26 (NC+) − E12 − 34 (NC −)560 to 680

(d) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
E12− 26 (NC+) − Body ground10 k
or higher
E12 − 34 (NC −)− Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
REPLACE ECM (SEE PAGE 10− 29)

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −60 1
AVENSIS Supplement (RM 1045E)
DTC P0776 PRESSURE CONTROL SOLENOID ”B”
PERFORMANCE (SHIFT SOLENOID VALVE
SL2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0776The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve SL2 remains open or closed
S Valve body is blocked
S Shift solenoid valve SL2
S Automatic transaxle (clutch, brake or gear etc.)
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position ( 1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand −held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CVZ −02