2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1865 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)05-1091
1281 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
Either of the following

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TOYOTA HIGHLANDER 2001 Service Repair Manual 05-1092- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1282 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST u

05-1092- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1282 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 P0796)
(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 ºP0796º is outputA
ºP0796º and other DTCsB
HINT:
If any other codes besides ºP0796º is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART
(SEE PAGE 05-1034)
A

Page 1867 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G20767
2
1
(+)
(-)
2 1 Shift Solenoid Valve SL3:
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)05-1093
1283 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSP

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TOYOTA HIGHLANDER 2001 Service Repair Manual 05-1094- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1284 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0798 PRESSURE CONTROL SOLENOID ºCº
ELECTRICAL (S

Page 1869 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G31765
Electronically Controlled
Transmission Solenoid
E8ECM
E8 G-B
G-R17
16SL3+
SL3- 4
11 R
L E1
SL3+
SL3-+B
CPU
G26426
Transmission Wire Side:
(Connector Front View):
SL3- SL3+
E1
- DIAGNOSTICSELEC

Page 1870 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual C82158C91565SL3+
SL3-
E7E8E9E6E5
ECM:
G20767
2
1
(+)
(-)
2 1 Shift Solenoid Valve SL3:
05-1096- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E/U151F)
1286 Author: Date:
2005 HIGHL

Page 1871 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-971
1161 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0982 SHIFT SOLENOID ºDº CONTROL CIRCUIT
LOW (SHIF

- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-971
1161 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0982 SHIFT SOLENOID ºDº CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE S4)
DTC P0983 SHIFT SOLENOID ºDº CONTROL CIRCUIT
HIGH (SHIFT SOLENOID VALVE S4)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is performed in combination with ºONº and ºOFFº operation of the shift solenoid
valves SL1 and SL2 which is controlled by the ECM. If an open or short circuit occurs in either of the shift
solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the vehicle to be oper-
ated smoothly (Fail safe function).
DTC No.DTC Detection ConditionTrouble Area
P0982ECM detects short in solenoid valve S4 circuit 2 times when
solenoid valve S4 is operated (1-trip detection logic)Short in shift solenoid valve S4 circuit
Shift solenoid valve S4
ECM
P0983ECM detects open in solenoid valve S4 circuit 2 times when
solenoid valve S4 is not operated (1-trip detection logic)Open in shift solenoid valve S4 circuit
Shift solenoid valve S4
ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good
condition ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.)
(see page 05-916).
MONITOR STRATEGY
Related DTCsP0982: Shift solenoid valve S4/Range check (Low resistance)
P0983: Shift solenoid valve S4/Range check (High resistance)
Required sensors/ComponentsShift solenoid valve S4
Frequency of operationContinuous
Duration0.064 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
P0982: Range check (Low resistance)
The monitor will run whenever this DTC is not present.See page 05-895
Shift solenoid valve S4ON
Battery voltage8 V or more
Ignition switchON
StarterOFF
P0983: Range check (High resistance)
The monitor will run whenever this DTC is not present.See page 05-895
Shift solenoid valve S4OFF
Battery voltage8 V or more
Ignition switchON
StarterOFF
05C17-23

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TOYOTA HIGHLANDER 2001 Service Repair Manual G31165
E10
Electronically Controlled
Transmission SolenoidECM
11
E8S4
8 RL
S4+B
CPU
D25234S4
Transmission Wire Side:
(Connector Front View):
E10
05-972- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TR

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