2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1849 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-1074- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1264 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
Either of the following

Page 1850 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)05-1075
1265 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST u

- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)05-1075
1265 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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 ºONº button of the hand-held tester.
(e) Select the item ºDIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/SHIFTº.
(f) According to the display on tester, perform the ºACTIVE TESTº.
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 05-1030).
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 (31 mph)
[Others]
Press º"º button: Shift up
Press ºuº button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
The shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand-held
tester.
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P0771)
(a) Connect the OBD II scan tool or the hand-held tester to the DLC3.
(b) Turn the ignition switch to the ON position and push the OBD II scan tool or the hand-held tester main
switch ON.
(c) When you use hand-held tester:
Select the item ºDIAGNOSIS/ENHANCED OBD II/DTC INFO/CURRENT CODESº.
(d) Read the DTCs using the OBD II scan tool or the hand-held tester.
Result:
Display (DTC output)Proceed to
Only ºP0771º is outputA
ºP0771º and other DTCsB
HINT:
If any other codes besides ºP0771º is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART
(SEE PAGE 05-1034)
A

Page 1851 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual C90640
(+) (-)
Shift Solenoid Valve SR:
05-1076- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1266 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT SHIFT

Page 1852 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-960- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1150 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0776 PRESSURE CONTROL SOLENOID ºBº
PERFORMANCE (S

05-960- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1150 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0776 PRESSURE CONTROL SOLENOID ºBº
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 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
P0776The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)
Shift solenoid valve SL2 remains open or closed
Valve body is blocked
Shift solenoid valve SL2
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 and stores the DTC.
MONITOR STRATEGY
Related DTCs
P0776:
Shift solenoid valve SL2/OFF malfunction
Shift solenoid valve SL2/ON malfunction
Required sensors/ComponentsShift solenoid valve SL2, Speed sensor (NT), Speed sensor (NC), Crankshaft posi-
tion sensor (NE)
Frequency of operationContinuous
Duration0.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
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
05C13-17

Page 1853 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-961
1151 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OFF malfunction
ECM selected gear1st
Vehicle speed10 km/

Page 1854 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-962- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1152 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST us

05-962- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1152 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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 ºONº button of the hand-held tester.
(e) Select the item ºDIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/SHIFTº.
(f) According to the display on tester, perform the ºACTIVE TESTº.
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 05-916).
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 (31 mph)
[Others]
Press º"º button: Shift up
Press ºuº button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
The shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand-held
tester.
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P0776)
(a) Connect the OBD II scan tool or the hand-held tester to the DLC3.
(b) Turn the ignition switch to the ON position and push the OBD II scan tool or the hand-held tester main
switch ON.
(c) When you use hand-held tester:
Select the item ºDIAGNOSIS/ENHANCED OBD II/DTC INFO/CURRENT CODESº.
(d) Read the DTCs using the OBD II scan tool or the hand-held tester.
Result:
Display (DTC output)Proceed to
Only ºP0776º is outputA
ºP0776º and other DTCsB
HINT:
If any other codes besides ºP0776º is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART
(SEE PAGE 05-920)
A

Page 1855 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual D25466
12
12
(+)
(-)
Shift Solenoid Valve SL2:
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-963
1153 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT

Page 1856 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-964- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1154 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0778 PRESSURE CONTROL SOLENOID ºBº
ELECTRICAL (SH

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