Page 337 of 5135

FI7052
Released
Depressed
VC
E2
VTAA53154Throttle Position Sensor
T2
05±206
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
When using hand±held tester:
1READ VALUE OF HAND±HELD TESTER(THROTTLE VALVE OPENING PERCENTAGE)
(a)Turn the ignition switch ON.
(b)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / THROTTLE POSº and read its value displayed on
the hand±held tester.
Result:
Accelerator pedal
operationThrottle valve opening position expressed as percentage
Proceed to
0 %A
Released DepressedApprox. 10 %
Approx. 75 %B
Approx. 100 %C
BCHECK FOR INTERMITTENT PROBLEMS (See page 05±149)
C Go to step 4
A
2 INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the throttle position sensor connector.
(b) Measure the resistance between the terminals of the throttle position sensor.
Standard:
Symbols (Terminal No.)Throttle ValveResistance
VC (T2±1) ± E2 (T2±2)2.5 to 5.9 k
VTA (T2 3) E2 (T2 2)Fully closed0.2 to 5.7 kVTA (T2±3) ± E2 (T2±2)Fully open2.0 to 10.2 k
NG REPLACE THROTTLE POSITION SENSOR
OK
Page 338 of 5135

A65159E2VTA1ECM Connector
VC
E13
VC
E2
VTAA53154Throttle Position Sensor
T2
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±207
AVENSIS REPAIR MANUAL (RM1018E)
3INSPECT ECM
(a)Reconnect the throttle position sensor connector.
(b)Disconnect the E13 ECM connector.
(c)Measure the resistance between the terminals of the E13
ECM connector.
Standard:
Symbols (Terminal No.)Throttle valveResistance
VC (E13±18)
± EC (E13±28)2.5 to 5.9 k
VTA1 (E13±21) Fully closed0.2 to 5.7 kVTA1 (E1321)
± E2 (E13±28)
Fully open2.0 to 10.2 k
(d)Check for continuity between the terminals of the E13
ECM connector.
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VC (E13±18) ± Body groundNoContinuityVTA1 (E13±21) ± Body groundNo Continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK AND REPLACE ECM (See page 01±32)
4 INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the throttle position sensor connector.
(b) Measure the resistance between the terminals of the throttle position sensor.
Standard:
Symbols (Terminal No.)Throttle ValveResistance
VC (T2±1) ± E2 (T2±2)2.5 to 5.9 k
VTA (T2 3) E2 (T2 2)Fully closed0.2 to 5.7 kVTA (T2±3) ± E2 (T2±2)Fully open2.0 to 10.2 k
NG REPLACE THROTTLE POSITION SENSOR
OK
Page 339 of 5135
A65159E2VTA1
E13ECM Connector
VC
23
1
A79044Throttle Position Sensor Connector
Wire Harness Side
VC
E2VTA
T2
05±208
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK HARNESS AND CONNECTOR(ECM ± THROTTLE POSITION SENSOR)
(a)Disconnect the E13 ECM connector.
(b)Disconnect the throttle position sensor connector.
(c)Check for continuity between the wire harness side con- nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
VC (T2±1) ± VC (E13±18)
VTA (T2±3) ± VTA1 (E13±21)Continuity
E2 (T2±2) ± E2 (E13±28)
y
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VC (T2±1)or VC (E13±18) ± Body groundNocontinuityVTA (T2±3)or VTA1 (E13±21) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK AND REPLACE ECM (See page 01±32)
Page 340 of 5135

A65159E2VTA1
E13ECM Connector
VC
23
1
A79044Throttle Position Sensor Connector
Wire Harness Side
VC
E2VTA
T2
A18294
VC (+)E2 (±)
ECM Connector
E13
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±209
AVENSIS REPAIR MANUAL (RM1018E)
When not using hand±held tester:
1CHECK HARNESS AND CONNECTOR(THROTTLE POSITION SENSOR ± ECM)
(a)Disconnect the E13 ECM connector.
(b)Disconnect the throttle position sensor connector.
(c)Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
VC (T2±1) ± VC (E13±18)
VTA (T2±3) ± VTA1 (E13±21)Continuity
E2 (T2±2) ± E2 (E13±28)
y
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VC (T2±1)or VC (E13±18) ± Body groundNocontinuityVTA (T2±3)or VTA1 (E13±21) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2INSPECT ECM(VC VOLTAGE)
(a)Disconnect the throttle position sensor connector.
(b)Turn the ignition switch ON.
(c)Measure the voltage between the terminals of the E13 ECM connector.
Standard:
Symbols (Terminal No.)Specified condition
VC (E13±18) ± E2 (E13±28)4.5 to 5.5 V
NGCHECK AND REPLACE ECM (See page 01±32)
OK
3 REPLACE THROTTLE BODY ASSY
GO
Page 341 of 5135
05±210
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
4READ OUTPUT DTC(THROTTLE POSITION SENSOR DTCS ARE OUTPUT AGAIN)
(a)Clear the DTC (See page 05±149).
(b) Start the engine.
(c) Run the engine at idle for more than 15 seconds.
(d)Read the DTC (See page 05±149). Result:
Display (DTC output)Proceed to
ºP0120/41, P0122/41 or P0123/41º is output againA
ºP0120/41, P0122/41 or P0123/41º is not output againB
B SYSTEM OK
A
CHECK AND REPLACE ECM (See page 01±32)
Page 342 of 5135

A72925
ECM
THW
E2 19
E13
28
E13 BR B±W
1 25V
R E2
Engine Coolant Temperature Sensor
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±199
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0115/22 ENGINE COOLANT TEMPERATURE CIRCUIT
DTC P0117/22 ENGINE COOLANT TEMPERATURE CIRCUIT
LOW INPUT
DTC P0118/22 ENGINE COOLANT TEMPERATURE CIRCUIT
HIGH INPUT
CIRCUIT DESCRIPTION
A thermistor is built in the engine coolant temperature sensor and changes the resistance value according
to the engine coolant temperature.
The structure of the sensor and connection to the ECM is the same as those of the intake air temperature
sensor.
HINT:
If the ECM detects the DTC ºP0115/22, P0117/22 or P0118/22º it enters the fail±safe mode in which the en-
gine coolant temperature is assumed to be 80 C (176 F).
DTC No.Proceed toDTC Detection ConditionTrouble Area
P0115/22Step 1
Open or short in engine cool-
ant temp. sensor circuit for
0.5 sec.
Open or short in engine coolant temperature sensor circuit
P0117/22Step 4Short in engine coolant temp.
sensor circuit for 0.5 sec.
Open or short in engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
P0118/22Step 2Open in engine coolant temp.
sensor circuit for 0.5 sec.
HINT:
After confirming DTC ºP0115/22, P0117/22 or P0118/22º, use the hand±held tester to confirm the engine
coolant temperature in the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALLº.
Temperature DisplayedMalfunction
±40 C (±40 F)Open circuit
140 (284 Short circuit
WIRING DIAGRAM
05C6V±01
Page 343 of 5135

05±200
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
If different DTCs that are related to a different system are output simultaneously while terminal E2 is
used as a ground terminal, terminal E2 may be open.
Read freeze frame data using
\b\b
\b
\f
Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for d\
etermining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.
When using hand±held tester:
1READ VALUE OF HAND±HELD TESTER(ENGINE COOLANT TEMPERATURE)
(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)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COOLANT TEMPº and read its value displayed on the hand±held tester.
Temperature: Same value as the actual intake air temperature.
Result:
Temperature DisplayedProceed to
±40C (±40 )A
140 C (284 ) or moreB
OK (Same as present temperature)C
HINT:
If there is an open circuit, the hand±held tester indicates ±40 C (±40 F).
If there is a short circuit, the hand±held tester indicates 140 C (284 F) or more.
BGo to step 4
CCHECK FOR INTERMITTENT PROBLEMS (See page 05±149)
A
Page 344 of 5135

A75743
ECM
Engine Coolant
Temperature Sensor
A76786
Wire Harness Side
E2
Engine Coolant Temperature
Sensor Connector
A75742
ECM
Engine Coolant
Temperature Sensor
A18294
THWE2
ECM Connector
E13
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±201
AVENSIS REPAIR MANUAL (RM1018E)
2READ VALUE OF HAND±HELD TESTER(CHECK FOR OPEN IN WIRE HARNESS)
(a)Disconnect the engine coolant temperature sensor con-
nector.
(b)Connect terminals 1 and 2 of the engine coolant tempera- ture sensor 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 value: 140 C (284 F) or more
OKCONFIRM GOOD CONNECTION AT SENSOR. IF OK, REPLACE WATER TEMP. SENSOR
NG
3READ VALUE OF HAND±HELD TESTER(CHECK FOR OPEN IN ECM)
(a)Disconnect the engine coolant temperature sensor con- nector.
(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 value: 140 C (284 F) or more
OKREPAIR OR REPLACE HARNESS OR CONNECTOR
NG
CONFIRM GOOD CONNECTION AT ECM. IF OK, CHECK AND REPLACE ECM (See page 01±32)