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

A90303
2ECM
Starter
Battery4
B-WEB1
1 1
BS1
S2W-B
A
J2
J/CJ7
J/C A
AE91
BR
BR
EHE1
EE FL
Main WAM2 1C
2
1 1
L-Y
10 1
ALTInstrument
Panel J/B
Assy
1A 16
BAM1
F7
FL Block AssyIC1Y WI15
Ignition Switch
B-Y
2
7813
B-W
STARTER
L B
1 5Engine
Room R/B
No. 2
4 1
2
B-W
2IC1
P1
PNP
Switch
STA 5
W-R2
3
B17
E7 AM1
AM2ST1
ST2
2
2
3
EB2 2 IC1
STARTER
Relay2
2 24 EB2
B B L-W
B-R Engine
Room R/B
No. 2 05-236
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
426 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-237
427 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
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.
Hand-held tester:
1 READ VALUE OF HAND-HELD TESTER (STA SIGNAL)
(a) Connect the hand-held tester to the DLC3.
(b) Turn ON the ignition switch. Push the hand-held tester main switch.
(c) On the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST
/ ALL / STARTER SIG. Read the values.
Result:
Ignition Switch ConditionONSTART
STA signalOFFON
OK REPLACE ECM (See page 10-9)
NG
2 INSPECT PARK/NEUTRAL POSITION SWITCH ASSY (See page 05-922)
OK:
When shift lever is in the N position, the PNP switch is ON.
When shift lever is in the P position, the PNP switch is OFF.
NG REPLACE PARK/NEUTRAL POSITION SWITCH
ASSY (See page 40-3) (Go to step 3 AFTER RE-
PLACEMENT)
OK
3 READ VALUE OF HAND-HELD TESTER (STA SIGNAL)
(a) Connect the hand-held tester to the DLC3.
(b) Turn ON the ignition switch. Push the hand-held tester main switch.
(c) On the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST
/ ALL / STARTER SIG. Read the values.
Result:
Ignition Switch ConditionONSTART
STA signalOFFON
OK SYSTEM OK
NG

1
5 6 2 3
7 8 4
A56879
I15
Ignition
SwitchAM1
AM2 ST2
ST1
05-238
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
428 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT IGNITION OR STARTER SWITCH ASSY
(a) Measure the resistance of the ignition switch terminals.
Standard:
Switch ConditionTester ConnectionSpecified Condition
LOCK1 - 2
7 - 810 kW or higher
START1 - 2
7 - 8Below 1 W
NG REPLACE IGNITION OR STARTER SWITCH
ASSY (Go to next step 5 AFTER REPLACE-
MENT)
OK
5 READ VALUE OF HAND-HELD TESTER (STA SIGNAL)
(a) Connect the hand-held tester to the DLC3.
(b) Turn ON the ignition switch. Push the hand-held tester main switch.
(c) On the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST
/ ALL / STARTER SIG. Read the values.
Result:
Ignition Switch ConditionONSTART
STA SignalOFFON
OK SYSTEM OK
NG
REPAIR OR REPLACE HARNESS AND CONNECTOR

A76903
STA (+)
E7
ECME1 (-)
E9
ECM
A76903
STA (+)
E7
ECME1 (-)
E9
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-239
429 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OBD II scan tool (excluding Hand-held Tester):
1 INSPECT ECM
(a) Turn the ignition switch ON.
(b) Measure the voltage of the ECM connectors.
Standard:
Tester ConnectionConditionSpecified Condition
E7-17 (STA) - E9-1 (E1)Ignition switch ON0 V
E7-17 (STA) - E9-1 (E1)Engine cranking6 V or more
OK REPLACE ECM (See page 10-9)
NG
2 INSPECT PARK/NEUTRAL POSITION SWITCH ASSY (See page 05-922)
NG REPLACE PARK/NEUTRAL POSITION SWITCH
ASSY (See page 40-3) (Go to next step 3 AFTER
REPLACEMENT)
OK
3 INSPECT ECM
(a) Measure the voltage of the ECM connectors.
Standard:
Tester ConnectionConditionSpecified Condition
E7-17 (STA) - E9-1 (E1)Ignition switch ON0 V
E7-17 (STA) - E9-1 (E1)Engine cranking6 V or more
OK SYSTEM OK
NG

1
5 6 2 3
7 8 4
A56879
AM1
AM2 ST2ST1
I15
Ignition
Switch
A76903
STA (+)
E7
ECME1 (-)
E9
ECM
05-240
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
430 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT IGNITION OR STARTER SWITCH ASSY
(a) Measure the resistance of the ignition switch terminals.
Standard:
Switch ConditionTester ConnectionSpecified Condition
LOCK1 - 2
7 - 810 kW or higher
START1 - 2
7 - 8Below 1 W
NG REPLACE IGNITION OR STARTER SWITCH
ASSY
OK
5 INSPECT ECM
(a) Measure the voltage of the ECM connectors.
Standard:
Tester ConnectionConditionSpecified Condition
E7-17 (STA) - E9-1 (E1)Ignition switch ON0 V
E7-17 (STA) - E9-1 (E1)Engine cranking6 V or more
OK SYSTEM OK
NG
REPAIR OR REPLACE HARNESS AND CONNECTOR

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-241
431 Author
: Date
:
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