Page 239 of 5135

FI7052
Released
Depressed
VC
E2
VTAA53154Throttle Position Sensor
T2
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±41
AVENSIS REPAIR MANUAL (RM1018E)
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
operatuinThrottle 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±5)
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 240 of 5135

A65159E2
VTAECM Connector
VC
E13
VC
E2
VTAA53154Throttle Position Sensor
T2
05±42
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK HARNESS AND CONNECTOR(ECM ± THROTTLE POSITION SENSOR)
(a)Disconnect the E13 ECM connector.
(b)Measure the resistance between the terminals of the E13 ECM connector.
Standard:
Symbols (Terminal No.)Throttle valveResistance
VC (E13±18)
± E2 (E13±28)2.5 to 5.9 k
VTA(E13±21) Fully closed0.2 to 5.7 kVTA(E1321)
± E2 (E13±28)
Fully open2.0 to 10.2 k
(c)Check for continuity between the terminals of the E13
ECM connector.
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VC (E13±18) ± Body groundNoContinuityVTA (E13±28) ± 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 241 of 5135
A65159E2
VTA
E13
ECM Connector
VC
23
1
A79044Throttle Position Sensor Connector
Wire Harness Side
VC
E2VTA
T2
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±43
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) ± VTA (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 VTA (E13±21) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK AND REPLACE ECM (See page 01±32)
Page 242 of 5135

05±38
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0116ENGINE COOLANT TEMPERATURE CIRCUIT RANGE/PERFORMANCE PROBLEM
CIRCUIT DESCRIPTION
Rfer to DTC P0115 on page 05±34
DTC No.DTC Detecting ConditionTrouble Area
P0116
When the temperature of engine coolant is ±7 C (20 F) with
a cold engine, and if the engine coolant temperature sensor
Engine coolant temperature sensorP0116g,g
value is 20 C (68 F) or less even if it has been 20 min or
more since the engine was warmed up. (2 trip detection logic)
g
Thermostat
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f \b\f\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.
If different DTCs that are related to a different systems are output simultaneously while terminal E2
is used as a ground terminal, terminal E2 may be open.
1READ OUTPUT DTC(BESIDES P0116)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only ºP0116º is outputA
ºP0116º and other DTCs are outputB
HINT:
If any other codes besides ºP0116º are output, perform the troubleshooting for those DTCs first.
BGO TO RELEVANT DTC CHART
A
2INSPECT THERMOSTAT (See Page 16±3)
NG REPLACE THERMOSTAT
OK
REPLACE ENGINE COOLANT TEMPERATURE SENSOR
05B3R±02
Page 243 of 5135

A72925
E2
Engine Coolant Temperature Sensor
2
1B±W
BR
E2 THWECM
19
E13
E13 285V
R 05±34
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0115 ENGINE COOLANT TEMPERATURE CIRCUIT
CIRCUIT DESCRIPTION
A thermistor is built into 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 the ones of the intake air temperature
sensor.
DTC No.DTC Detecting ConditionTrouble Area
P0115Open or short in water temp. sensor circuit
Open or short in Engine coolant temperature sensor circuit
Engine coolant temperature sensor
ECM
If the ECM detects the DTC ºP0115º, it enters the fail±safe mode in which the engine coolant temperature
is assumed to be 80 C (176 F).
HINT:
After confirming DTC P0115, use the hand±held tester to confirm the engine coolant temperature in ºDIAG-
NOSIS / OBD/MOBD / DATA LIST / ALLº.
Temperature DisplayedMalfunction
±40 C (±40 F)Open circuit
140 C (284 F) or moreShort circuit
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using
Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ratio was lean or rich, etc. at
the time of the malfunction.
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.
05B3Q±02
Page 244 of 5135

A75743
ECM
Engine Coolant
Temperature Sensor
A76786
Wire Harness Side
E2
Engine Coolant Temperature
Sensor Connector
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±35
AVENSIS REPAIR MANUAL (RM1018E)
1READ VALUE OF HAND±HELD TESTER(WATER TEMPERATURE)
(a)Connect the hand±held tester to the DLC3.
(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: Same as actual engine coolant temperature
Result:
Temperature DisplayedProceed to
±40 C (±40 F)A
140 C (284 F) 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±5)
A
2 READ VALUE OF HAND±HELD TESTER(CHECK FOR OPEN IN 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: 140 C (284 F) or more
OK CONFIRM GOOD CONNECTION AT SENSOR. IF OK, REPLACE ENGINE COOLANT TEMP.
SENSOR
NG
Page 245 of 5135

A75742
ECM
Engine Coolant
Temperature Sensor
A18294
THWE2
ECM Connector
E13
A75766
ECM
Engine Coolant
Temperature Sensor
05±36
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
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: 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)
4 READ VALUE OF HAND±HELD TESTER(CHECK FOR SHORT IN HARNESS)
(a) Disconnect the engine coolant temperature sensor con- nector.
(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)
OK REPLACE ENGINE COOLANT TEMPERATURE SENSOR
NG
Page 246 of 5135
A75744
ECM
Engine Coolant
Temperature Sensor
A65743ECM Connector
E13
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±37
AVENSIS REPAIR MANUAL (RM1018E)
5READ VALUE OF HAND±HELD TESTER(CHECK FOR SHORT IN ECM)
(a)Disconnect the E13 ECM connector.
(b)Disconnect the engine coolant temperature sensor con-
nector.
(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: ±40 C (±40 F)
OKREPAIR OR REPLACE HARNESS OR CONNECTOR
NG
CHECK AND REPLACE ECM (See page 01±32)