TOYOTA LAND CRUISER 1998 Factory Repair Manual
Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 981 of 3115
DI-460
- DIAGNOSTICSAUTOMATIC TRANSMISSION
653 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0973 Shift Solenoid ºAº Control Circuit Low
(Shift Solenoid Valve S1)
DTC P0974 Shift Solenoid ºAº Control Circuit High
(Shift Solenoid Valve S1)
CIRCUIT DESCRIPTION
See page DI-426.
DTC No.DTC Detection ConditionTrouble Area
P0973ECM detects short in solenoid valve S1 circuit 4 times when
solenoid valve S1 is operated (1-trip detection logic)Short in shift solenoid valve S1 circuit
Shift solenoid valve S1
ECM
P0974ECM detects open in solenoid valve S1 circuit 4 times when
solenoid valve S1 is not operated (1-trip detection logic)Open in shift solenoid valve S1 circuit
Shift solenoid valve S1
ECM
MONITOR DESCRIPTION
The ECM commands gearshift 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 stored
the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good condi-
tion ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.).
MONITOR STRATEGY
RltdDTCP0973Shift solenoid valve S1/Range check (Low resistance)Related DTCsP0974Shift solenoid valve S1/Range check (High resistance)
Required sensors/ComponentsShift solenoid valve S1
Frequency of operationContinuous
Duration0.1 sec. x 2 (times) or more
MIL operation1 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Range check (Low resistance)
SolenoidON
Range check (High resistance)
SolenoidOFF
DIB3F-02
Page 982 of 3115
D12766
S1 R
E6 W E1
Electronically Controlled
Transmission Solenoid
11ECM
R8
S18EB2
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-461
654 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Low resistance)
Intelligent power MOS diagnosis fail signals detected while
the solenoid is operatedFail at solenoid resistance: 8 W or less
Range check (High resistance)
Intelligent power MOS diagnosis fail signals detected while
the solenoid is not operatedFail at solenoid resistance: 100 kW or more
COMPONENT OPERATING RANGE
ParameterStandard value
Shift solenoid valve S1Resistance: 11 to 15 W at 20°C (68°F)
WIRING DIAGRAM
Page 983 of 3115
1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994
S1
D11583
S1
E1
E5E6E7E8E9
DI-462
- DIAGNOSTICSAUTOMATIC TRANSMISSION
655 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check transmission wire.
PREPARATION:
Disconnect the transmission wire connector.
CHECK:
Measure resistance between S1 of transmission wire connec-
tor and body ground.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
NG Go to step 3.
OK
2 Measure resistance between terminal S1 and E1 of ECM connector.
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure resistance between terminals S1 and E1 of ECM con-
nector.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
NG Repair or replace the harness or connector
(See page IN-36).
OK
Check and replace the ECM (See page
IN-36).
Page 984 of 3115
D11991(+) (-)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-463
656 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve S1.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve S1.
CHECK:
Measure the resistance between the solenoid connector termi-
nal and the body ground.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
CHECK:
Connect the battery positive lead to the solenoid connector ter-
minal and the battery negative lead to the solenoid body
ground.
OK:
Solenoid sounds operation noise.
NG Replace the shift solenoid valve S1
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 985 of 3115
DI-464
- DIAGNOSTICSAUTOMATIC TRANSMISSION
657 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0976 Shift Solenoid ºBº Control Circuit Low
(Shift Solenoid Valve S2)
DTC P0977 Shift Solenoid ºBº Control Circuit High
(Shift Solenoid Valve S2)
CIRCUIT DESCRIPTION
See page DI-426.
DTC No.DTC Detection ConditionTrouble Area
P0976ECM detects short in solenoid valve S2 circuit 4 times when
solenoid valve S2 is operated (1-trip detection logic)Short in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM
P0977ECM detects open in solenoid valve S2 circuit 4 times when
solenoid valve S2 is not operated (1-trip detection logic)Open in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM
MONITOR DESCRIPTION
The ECM commands gearshift 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 stored
the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good condi-
tion ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.).
MONITOR STRATEGY
RltdDTCP0976Shift solenoid valve S2/Range check (Low resistance)Related DTCsP0977Shift solenoid valve S2/Range check (High resistance)
Required sensors/ComponentsShift solenoid valve S2
Frequency of operationContinuous
Duration0.1 sec. x 2 (times) or more
MIL operation1 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Range check (Low resistance)
SolenoidON
Range check (High resistance)
SolenoidOFF
DIB3G-02
Page 986 of 3115
D12766
S2 W
E6 B10
15ECM
E1
Electronically Controlled
Transmission Solenoid
W9
EB2
S2
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-465
658 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Low resistance)
Intelligent power MOS diagnosis fail signal detected while
the solenoid is operatedFail at solenoid resistance: 8 W or less
Range check (High resistance)
Intelligent power MOS diagnosis fail signal detected while
the solenoid is not operatedFail at solenoid resistance: 100 kW or more
COMPONENT OPERATING RANGE
ParameterStandard value
Shift solenoid valve S2Resistance: 11 to 15 W at 20°C (68°F)
WIRING DIAGRAM
Page 987 of 3115
1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994S2
D11583
S2
E1
E5E6E7E8E9
DI-466
- DIAGNOSTICSAUTOMATIC TRANSMISSION
659 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check transmission wire.
PREPARATION:
Disconnect the transmission wire connector.
CHECK:
Measure resistance between S2 of transmission wire connec-
tor and body ground.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
NG Go to step 3.
OK
2 Measure resistance between terminal S2 and E1 of ECM connector.
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure resistance between terminals S2 and E1 of ECM con-
nector.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
NG Repair or replace the harness or connector
(See page IN-36).
OK
Check and replace the ECM (See page
IN-36).
Page 988 of 3115
D11992
(+) (-)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-467
660 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve S2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve S2.
CHECK:
Measure the resistance between the solenoid connector termi-
nal and the body ground.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
CHECK:
Connect the battery positive lead to the solenoid connector ter-
minal and the battery negative lead to the solenoid body
ground.
OK:
Solenoid sounds operation noise.
NG Replace the shift solenoid valve S2
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 989 of 3115
DI-468
- DIAGNOSTICSAUTOMATIC TRANSMISSION
661 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0985 Shift Solenoid ºEº Control Circuit Low
(Shift Solenoid Valve SR)
DTC P0986 Shift Solenoid ºEº Control Circuit High
(Shift Solenoid Valve SR)
CIRCUIT DESCRIPTION
see page DI-426.
DTC No.DTC Detection ConditionTrouble Area
P0985ECM detects short in solenoid valve SR circuit 4 times when
solenoid valve SR is operated (1-trip detection logic)Short in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM
P0986ECM detects open in solenoid valve SR circuit 4 times when
solenoid valve SR is not operated (1-trip detection logic)Open in shift solenoid valve SR circuit
Shift solenoid valve SR
ECM
MONITOR DESCRIPTION
The ECM commands gearshift 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 condi-
tion ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.) (see page
DI-426).
MONITOR STRATEGY
RltdDTCP0985Shift solenoid valve SR/Range check (Low resistance)Related DTCsP0986Shift solenoid valve SR/Range check (High resistance)
Required sensors/ComponentsShift solenoid valve SR
Frequency of operationContinuous
Duration0.1 sec. x 2 (times) or more
MIL operation1 driving cycle
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Range check (Low resistance)
SolenoidON
Range check (High resistance)
SolenoidOFF
DIB3H-02
Page 990 of 3115
D12766
SR G
E6 SB7
7ECM
E1
Electronically Controlled
Transmission Solenoid
15
G
EB2
SR
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-469
662 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Range check (Low resistance)
Intelligent power MOS diagnosis fail signals detected while
the solenoid is operatedFail at solenoid resistance: 8 W or less
Range check (High resistance)
Intelligent power MOS diagnosis fail signals detected while
the solenoid is not operatedFail at solenoid resistance: 100 kW or more
COMPONENT OPERATING RANGE
ParameterStandard value
Shift solenoid valve SRResistance: 11 to 15 at 20°C (68°F)
WIRING DIAGRAM