o2 sensor TOYOTA HIGHLANDER 2001 Service Repair Manual

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-235
425 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0617 STARTER RELAY CIRCUIT HIGH
MONITOR DESCRIPTION
While the engine is being cranked, the battery positive voltage is applied to terminal STA of the ECM.
If the vehicle is being driven and the ECM detects the starter control signal (STA), the ECM concludes that
the starter control circuit is malfunctioning. The ECM will turn on the MIL and will set a DTC.
DTC No.DTC Detecting ConditionTrouble Area
P0617
When conditions (a), (b) and (c) are met and the battery (+B)
voltage 10.5 V or more is applied for 20 seconds:
(1 trip detection logic)
(a) Vehicle speed greater than 12 mph (20 km/h)
(b) Engine revolution greater than 1,000 rpm
(c) STA signal ON

Short in PNP switch assy circuit

PNP switch assy

Ignition switch

ECM
MONITOR STRATEGY
Related DTCsP0617: Starter signal
Required sensors / components (Main)Starter relay and PNP switch
Required sensors / components (Related)CKP sensor and vehicle speed sensor
Frequency of operationContinuous
Duration20 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not presentSee page 05-16
Battery voltage10.5 V or more
Vehicle speed20 km/h (12.4 mph) or more
Engine RPM1,000 rpm or more
TYPICAL MALFUNCTION THRESHOLDS
Starter signalON
05EVO-05

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-241
431 Author
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0630 VIN NOT PROGRAMMED OR MISMATCH -
ECM/PCM
CIRCUIT DESCRIPTION
DTC P0630 is set when the Vehicle Indication Number (VIN) is not stored in the ECM or the input VIN is not
accurate. Input the VIN with the hand-held tester (see page 05-12).
DTC No.DTC Detection ConditionsTrouble Areas
P0630
VIN is not stored in ECM

Input VIN in ECM is not accurate
ECM
MONITOR STRATEGY
Related DTCsP0630: VIN not programed
Required Sensors/Components (Main)ECM
Required Sensors/Components (Related)'
Frequency of OperationContinuous
Duration0.5 seconds
MIL OperationImmediate
Sequence of OperationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
Battery voltage8 V or more
Ignition switchON
StaterOFF
TYPICAL MALFUNCTION THRESHOLDS
VIN codeNot programmed
COMPONENT OPERATING RANGE
VIN codeProgrammed
INSPECTION PROCEDURE
1 READ CURRENT DTC
NOTICE:
If P0630 is present, the VIN must be input to the ECM using the hand-held tester. However, all DTCs
are cleared automatically by the tester when inputting the VIN. If DTCs other than P0630 are present,
check them first.
NEXT
2 INPUT VIN WITH HAND-HELD TESTER (See page 05-12)
NEXT
END
05MOK-01

05-242
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
432 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT
MALFUNCTION (PRNDL INPUT)
CIRCUIT DESCRIPTION
When the shift lever is in the N or P position: 1) the Park/Neutral Position (PNP) switch turns on, and 2) ECM
terminal NSW is grounded to the body ground via the starter relay and voltage becomes 0 V. When the shift
lever is in the D, 2, L or R position: 1) the PNP switch turns off, and 2) ECM terminal NSW receives current
and becomes the voltage of the ECM internal power source.
If the shift lever is moved from the N position to the D position, this signal is used for air-fuel ratio correction
and for idle speed control (estimated control).
DTC No.DTC Detection ConditionTrouble Area
P07052 or more switches are ON simultaneously at R, N, D, 2 and L
positions (2 trip detection logic)
Short in PNP switch circuit

PNP switch

ECM
HINT:
After confirming DTC P0705, use the hand-held tester to confirm the PNP switch signal in the ALL menu
(to reach the ALL menu: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL).
WIRING DIAGRAM
Refer to DTC P0705 on page 05-922.
INSPECTION PROCEDURE
Refer to DTC P0705 on page 05-922.
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, 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.
055UU-10

GND
C42920C53419
5 V/DIV
0.5 ms/DIV
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-937
1127 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0717 TURBINE SPEED SENSOR CIRCUIT NO
SIGNAL
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT)
with the counter gear speed sensor signal (NC), the ECM detects the shift timing of the gears and appropri-
ately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing
smooth gear shift.
DTC No.DTC Detection ConditionTrouble Area
P0717
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, R and L) is OFF
(c) Speed sensor (NT): less than 300 rpm
Open or short in transmission revolution sensor NT (speed
sensor NT) circuit

Transmission revolution sensor NT (speed sensor NT)

ECM

Automatic transaxle assembly
Reference (Using an oscilloscope):
Check the waveform between the terminals NT+ and NT-
of the ECM connector.
Standard: Refer to the illustration.
TerminalNT+ - NT-
Tool setting5V/DIV, 0.5ms/DIV
Vehicle conditionVehicle speed 20 km/h (12 mph)
MONITOR DESCRIPTION
The NT terminal of the ECM detects a revolution signal from the speed sensor (NT) (input RPM). The ECM
calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd or O/D gear in the shift position of D, if the input shaft revolution
is less than 300 rpm
*1 although 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.
MONITOR STRATEGY
Related DTCsP0717: Speed sensor (NT)/Verify pulse input
Required sensors/ComponentsSpeed sensor (NT), Speed sensor (NC)
Frequency of operationContinuous
Duration5 sec.
MIL operationImmediate
Sequence of operationNone
05F3B-05

G31763
ECM
NT+
NT- 27
35 W
R-W 2 1E8
E8 T3
Turbine Speed Sensor
5V
E1
BR3795OK NG
05-938- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1128 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not present.See page 05-895
Shift changeShift change is completed and before starting next shift change operation
ECM selected gear2nd, 3rd or 4th
Output shaft rpm1,000 rpm or more
NSW switchOFF
R switchOFF
L switchOFF
EngineRunning
TYPICAL MALFUNCTION THRESHOLDS
Sensor signal rpmLess than 300 rpm
COMPONENT OPERATING RANGE
Speed sensor (NT)Turbine speed is equal to engine speed when lock-up ON
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT 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(NT)
OK

C58536
1 2
Sensor Side:
(Connector Front View):
T3
C82158C91565
NT+
NT-
E7E8E9E6E5
ECM:
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-939
1129 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT SPEED SENSOR(NT)
(a) Disconnect the speed sensor connector from the trans-
axle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
TOYOTA made:
Tester ConnectionSpecified Condition
20 C (68 F)
1 - 2500 to 620 W
Standard:
AISIN made:
Tester ConnectionSpecified Condition
20 C (68 F)
1 - 2560 to 680 W
NG REPLACE SPEED SENSOR(NT)
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:
TOYOTA made:
Tester ConnectionSpecified Condition
20 C (68 F)
E8 - 27 (NT+) - E8 - 35 (NT-)500 to 620 W
Standard:
AISIN made:
Tester ConnectionSpecified Condition
20 C (68 F)
E8 - 27 (NT+) - E8 - 35 (NT-)560 to 680 W
(d) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
E8 - 27 (NT+) - Body ground10 kW or higher
E8 - 35 (NT-) - Body ground=
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 01-36)
OK
REPLACE ECM (SEE PAGE 10-9)

05-940- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1130 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0724 BRAKE SWITCH ºBº CIRCUIT HIGH
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while driving in lock-up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ECM. Then the ECM cancels the op-
eration of the lock-up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P0724
The stop light switch remains ON even when the vehicle is
driven in a GO (30 km/h) and STOP (3 km/h) fashion 5 times.
(2-trip detection logic).
Short in stop light switch signal circuit

Stop light switch

ECM
MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during ºstop
and goº driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM
stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) 5 times
for two driving cycles in order to detect malfunction.
MONITOR STRATEGY
Related DTCsP0724: Stop light switch/Range check/Rationality
Required sensors/ComponentsStop light switch, Vehicle speed sensor
Frequency of operationContinuous
DurationGO and STOP 5 times
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not present.See page 05-895
Battery voltage8 V or more
Ignition switchON
StarterOFF
GO (Vehicle speed is 30 km/h (18.63 mph) or more)Once
STOP (Vehicle speed is less than 3 km/h (1.86 mph))Once
TYPICAL MALFUNCTION THRESHOLDS
Brake switchRemain ON during GO and STOP 5 times
05F3C-05

E65594
Free Pushed in2
3
41
05-942- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1132 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the OBD II scan tool or 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) Turn the ignition switch off.
(b) Connect the OBD II scan tool or hand-held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ºONº button of the OBD II scan tool or the hand-held tester.
(e) When you use hand-held tester:
Select the item ºDIAGNOSIS/ENHANCED OBD II/DATA LISTº.
(f) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Range (display)Normal Condition
STOP LIGHT SWStop light SW Status/
ON or OFF
Brake Pedal is depressed: ON

Brake Pedal is released: OFF
1 INSPECT STOP LAMP SWITCH ASSY
(a) Remove the stop lamp switch assy.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch positionTester ConnectionSpecified Condition
Switch pin free1 - 210 kW or higher
Switch pin pushed in=Below 1 W
Switch pin free3 - 4Below 1 W
Switch pin pushed in=10 kW or higher
NG REPLACE STOP LAMP SWITCH ASSY
OK

- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-949
1139 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0746 PRESSURE CONTROL SOLENOID ºAº
PERFORMANCE (SHIFT SOLENOID VALVE
SL1)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
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
P0746The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)

Shift solenoid valve SL1 remains open or closed

Valve body is blocked

Shift solenoid valve SL1

Automatic transaxle (clutch, brake or gear etc.)

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position (1st, 2nd, 3rd or O/D gear position). When the gear position commanded by the ECM and the
actual gear position are not same, the ECM illuminates the MIL.
Example:
When either condition (a) or (b) is met, the ECM detects a malfunction.
(a) The ECM commands the 1st gear, but the actual gear is 2nd.
(b) The ECM commands the 2nd gear, but the actual gear is 1st.
MONITOR STRATEGY
Related DTCs
P0746:
Shift solenoid valve SL1/OFF malfunction
Shift solenoid valve SL1/ON malfunction
Required sensors/ComponentsShift solenoid valve SL1, Speed sensor (NT), Speed sensor (NC), Crankshaft posi-
tion sensor (NE)
Frequency of operationContinuous
Duration
OFF malfunction, ON malfunction (A)
0.8 sec.
ON malfunction (B)
1 sec.
MIL operation2 driving cycles
Sequence of operationNone
05C0Z-17

05-950- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1140 Author
: Date
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
ALL:
Transmission rangeºDº
ECT (Engine coolant temperature)60°C (140°F) or more
TFT (Transmission fluid temperature)-20C (-4F) or more
TFT sensor circuitNot circuit malfunction
ECT sensor circuitNot circuit malfunction
Turbine speed sensor circuitNot circuit malfunction
Intermediate shaft speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Electronic throttle systemNot circuit malfunction
OFF malfunction
ECM selected gear1st
Vehicle speed10 to 40 km/h (6.2 to 24.9 mph)
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (A)
ECM selected gear2nd
Vehicle speed10 km/h (6.2 mph) or more
Throttle valve opening angle4.5% or more at engine speed 1,900 rpm
(Varies with engine speed)
ON malfunction (B)
ECM lock-up commandOFF
ECM selected gear3rd or 4th
TYPICAL MALFUNCTION THRESHOLDS
Either of the following conditions is met: OFF malfunction, or ON malfunction (A) and (B)
2 detections are necessary per driving cycle:
1st detection; temporary flag ON
2nd detection; pending fault code ON
OFF malfunction
Input (turbine) speed/Intermediate shaft speed1.49 to 1.63
ON malfunction (A)
Input (turbine) speed/Intermediate shaft speed2.72 to 2.86
ON malfunction (B)
Engine speed - Input (tubine) speed250 rpm or more