1996 TOYOTA RAV4 Electrical

Q08344
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−137
1996 RAV4 (RM447U)
10. MANUAL SHIFTING TEST
HINT:
With this test, it can be determined whether the trouble is within
the electrical circuit or is a mechanical problem in the transaxle.
(a) Disconnect the solenoid wire.
(b) Inspect the manual driving operation
Check that the shift and gear positions correspond with
the table below.
Shift PositionGear Position
DO/D
23rd
L1st
RReverse
PPawl Lock
HINT:
If the L, 2 and D position gear position are difficult to distinguish,
do the following road test.
While driving, shift through the L, 2 and D positions.
Check that the gear change corresponds to the shift posi-
tion.
If any abnormality is found in the above test, the problem
is in the transaxle itself.
(c) Connect the solenoid wire.
(d) Cancel out the DTC (See step 3).

DI40C−02
DI−138
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed in the table below and proceed to the
page given.
DTC No.
(See page)Detection ItemTrouble AreaMIL*Memory
P0500
(DI−94)Vehicle Speed Sensor
Malfunction
Open or short in vehicle speed sensor circuit
Vehicle speed sensor
Combination meter
ECM

P0750
(DI−146)Shift Solenoid A Malfunction
(Shift Solenoid Valve No. 1)Shift solenoid valve No. 1 is stuck open or closed
Valve body is blocked up or stuck
P0753
(DI−147)Shift Solenoid A Electrical
Malfunction
(Shift Solenoid Valve No. 1)Open or short in shift solenoid valve No. 1 circuit
Shift solenoid valve No. 1
ECM

P0755
(DI−146)Shift Solenoid B Malfunction
(Shift Solenoid Valve No. 2)Shift solenoid valve No. 2 is stuck open or closed
Valve body is blocked up or stuck
P0758
(DI−147)Shift Solenoid ”B” Electrical
Malfunction
(Shift Solenoid Valve No. 2)Open or short in shift solenoid valve No. 2 circuit
Shift solenoid valve No. 2
ECM

P0770
(DI−151)Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)Shift solenoid valve SL is stuck open or closed
Valve body is blocked up or stuck
Lock−up clutch

P0773
(DI−153)Shift Solenoid E Electrical
Malfunction
(Shift Solenoid Valve SL)Open or short in shift solenoid valve SL circuit
Shift solenoid valve SL
ECM

P1780
(DI−156)Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
Park/neutral position switch
ECM

*:  ...... MIL lights up

Position
DNORMAL
Solenoid valve
No. 2
ONGear
L 2ON ONOFF
ON OFF
OFF OFF
OFF ON
ON ON
OFF ON
ON OFF
ON ON1st
2nd
3rd
O/D
1st
2nd
3rd
1st
2ndSolenoid valve
No. 1 No. 2
X
X
X
X
X
X
X
X
XON
ON
ON
OFF
ON
ON
ON
OFF
ONGear
3rd
3rd
3rd
O/D
3rd
3rd
3rd
1st
2ndNo. 1 No. 2Solenoid valve
Gear
1st ON X
X
X
X
X
X
X
X
X OFF
OFF
OFF
ON ON OFF OFFON SHIFT SOLENOID NO.1
MALFUNCTIONINGSHIFT SOLENOID NO.2
MALFUNCTIONING
O/D
O/D
O/D
1st
1st
1stMALFUNCTIONING BOTH SOLENOIDS
Gear when shift selector is
manually operated
O/D
O/D
O/D
O/D
3rd
3rd
3rd
1st
1st
X: Malfunctions3rd
3rd No. 1
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−147
1996 RAV4 (RM447U)
DTC P0753, P0758 Shift Solenoid A/B Electrical Malfunc-
tion (Shift Solenoid Valve No. 1/No. 2)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the shift solenoid valves No. 1 and No.
2 controlled by 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 operated safely (Fail safe function).
Fail Safe Function:
If either of the shift solenoid valve circuits develops an open or a short, the ECM turns the other shift solenoid
ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the shift solenoid
valve SL OFF at the same time. If both solenoids are malfunction, hydraulic control cannot be done electroni-
cally so it must be done manually.
Manual shifting as shown in the following table must be done. (In the case of a short circuit, the ECM stops
sending current to the short circuited solenoid).
HINT:
Check the shift solenoid valve No. 1 when DTC P0753 is output and check the shift solenoid valve No. 2
when DTC P0758 is output.
DTC No.DTC Detecting ConditionTrouble Area
P0753
P0758
The ECM checks for an open or short circuit in the shift sole-
noid valves No. 1 and No. 2 circuit when it changes
The ECM records DTC P0753 or P0758 if condition a) or b) is
detected once, but it does not light up the MIL
After ECM detects condition a) or b) continuously 2 times or
more in one−trip, it causes the MIL light up until condition a) or
b) disappears
After that, if the ECM detects condition (a) or (b) once, it starts
lighting up the MIL again
(a) Solenoid resistance is 8 Ω or less short circuit when sole-
noid is energized
(b) Solenoid resistance is 100 kΩ or more open circuit when
solenoid is not energized
Open or short in shift solenoid valve No. 1/No. 2 circuit
Shift solenoid valve No. 1/No. 2
ECM
DI40I−01

Q06971
Solenoid Valve SLTransaxle
E1
E4ECM
B+
SL 2
1
Y−B
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−153
1996 RAV4 (RM447U)
DTC P0773 Shift Solenoid E Electrical Malfunction
(Shift Solenoid Valve SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure
acting on the lock−up relay valve, which then controls operation of the lock−up clutch.
Fail Safe Function:
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.
DTC No.DTC Detecting ConditionTrouble Area
P0773
Either a) or b) is detected for 1 time (2 trip detection logic)
(a) Solenoid resistance is 8 Ω or less short circuit when sole-
noid is energized
(b) Solenoid resistance is 100 kΩ or more open circuit when
solenoid is not energized
Open or short in shift solenoid valve SL circuit.
Shift solenoid valve SL
ECM
WIRING DIAGRAM
DI40K−01

D02250
2 − 3 m
(6.6 − 9.8 ft)
Battery
Adaptor SST 1
90980−10629 90980−111433
24 W
or
Q05128
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−187
1996 RAV4 (RM447U)
Clear the DTC’s after the test.
Evaluation:
ProblemPossible cause
If the measured values at all conditions are higher than the
specificationDifferential control valve defective
Solenoid modulator valve defective
If the measured values at all conditions are lower than the
specificationOil pump defective
Differential control valve defective
Solenoid modulator valve defective
If the pressure is low in the stall test
(Shift solenoid valve SLD ON only)Shift solenoid valve SLD defective
If the measured values are lower than the specification,
when sub−harness is connectedSolenoid modulator valve defective
Differential control valve defective
If the measured values are higher than the specification,
when sub−harness is connectedSolenoid modulator valve defective
Differential control valve defective
11. MANUAL SHIFTING TEST
HINT:
With this test, it can be determined whether the trouble is within
the electrical circuit or is a mechanical problem in the transaxle.
(a) Disconnect the solenoid wire.
(b) Inspect the manual driving operation.
Check that the shift and gear positions correspond with
the table below.

DI40U−02
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−189
1996 RAV4 (RM447U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed in the table below and proceed to the
page given.
DTC No.
(See page)Detection ItemTrouble AreaMIL*Memory
P0500
(DI−94)Vehicle Speed Sensor
Malfunction
Open or short in vehicle speed sensor circuit
Vehicle speed sensor
Combination meter
ECM

P0750
(DI−197)Shift Solenoid A Malfunction
(Shift Solenoid Valve No. 1)Shift solenoid valve No. 1 is stuck open or closed
Valve body is blocked up or stuck
P0753
(DI−198)Shift Solenoid A Electrical
Malfunction
(Shift Solenoid Valve No.1)Open or short in shift solenoid valve No. 1 circuit
Shift solenoid valve No. 1
ECM

P0755
(DI−197)Shift Solenoid B Malfunction
(Shift Solenoid Valve No. 2)Shift solenoid valve No. 2 is stuck open or closed
Valve body is blocked up or stuck
P0758
(DI−198)Shift Solenoid B Electrical
Malfunction
(Shift Solenoid Valve No. 2)Open or short in shift solenoid valve No. 2 circuit
Shift solenoid valve No. 2
ECM

P0770
(DI−201)Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)Shift solenoid valve SL is stuck open or closed
Valve body is blocked up or stuck
Lock−up clutch

P0773
(DI−203)Shift Solenoid E Electrical
Malfunction
(Shift Solenoid Valve SL)Open or short in shift solenoid valve SL circuit
Shift solenoid valve SL
ECM

P1700
(DI−206)Speed sensor No. 2 Circuit
Malfunction
(Front Speed Sensor)Open or short in front speed sensor circuit
Front speed sensor
ECM

P1715
(DI−209)Rear Wheel Sensor Circuit
Malfunction
(Rear Speed Sensor)Open or short in rear speed sensor circuit
Rear speed sensor
ECM

P1760
(DI−212)Linear Solenoid for Line Pres-
sure Control Circuit Malfunction
(Shift Solenoid Valve ST)Open or short in shift solenoid valve ST circuit
Shift solenoid valve ST
ECM

P1770
(DI−215)Differential Lock Solenoid No. 1
Circuit Malfunction
(Shift Solenoid Valve SLD)Open or short in shift solenoid valve SLD circuit
Shift solenoid valve SLD
ECM

P1780
(DI−218)Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
Park/neutral position switch
ECM

*:  ...... MIL lights up

Position
NORMALSHIFT SOLENOID NO. 1
MALFUNCTIONING
Solenoid valveNo. 1 No. 2GearSHIFT SOLENOID NO. 2
MALFUNCTIONINGBOTH SOLENOIDS MAL-
FUNCTIONINGSolenoid valve
No. 1 No. 2GearSolenoid valve
No. 1 No. 2GearGear when shift selector is
manually operated
D
2
LON
ONOFF
ON
ON OFF
OFF OFF
ON
ONOFF
ON
ON OFF
ON
ON ONOFF1st
2nd
3rd
O/D
1st
2nd
3rd
1st
2ndX
X
X
X
X
X
X
X
XON
ON
OFF
OFFON
ON
ON3rd 3rd
O/D
3rd
3rd
1st
2ndX
X
X
X
X
X
X
X
X OFF
OFFON
ON OFF OFF
OFF
ON
ON1st
O/D
1st O/D O/D
1st
1stO/D O/D O/D
O/D
1st
1st
X: MalfunctionsON
ON3rd
3rd
3rd
3rd3rd
3rd
3rd
DI−198
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
DTC P0753, P0758 Shift Solenoid A/B Electrical Malfunc-
tion (Shift Solenoid Valve No. 1/No. 2)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the shift solenoid valves No. 1 and No.
2 controlled by 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 operated smoothly (Fail safe function).
Fail Safe Function:
If either of the shift solenoid valve circuits develops an open or a short, the ECM turns the other shift solenoid
ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the shift solenoid
valve SL OFF at the same time. If both solenoids are malfunction, hydraulic control cannot be done electroni-
cally so it must be done manually.
Manual shifting as shown in the following table must be done. (In the case of a short circuit, the ECM stops
sending current to the short circuited solenoid).
HINT:
Check the shift solenoid valve No. 1 when DTC P0753 is output and check the shift solenoid valve No. 2
when DTC P0758 is output.
DTC No.DTC Detecting ConditionTrouble Area
P0753
P0758
The ECM checks for an open or short circuit in the shift sole-
noid valves No.1 and No.2 circuit when it changes
The ECM records DTC P0753 or P0758 if condition (a) or (b) is
detected once, but it does not light up the MIL
After ECM detects condition (a) or (b) continuously 2 times or
more in one−trip, it causes the MIL light up until condition (a) or
(b) disappears
After that, if the ECM detects condition (a) or (b) once, it starts
lighting up the MIL
(d) Solenoid resistance is 8 Ω or less short circuit when sole-
noid is energized
(e) Solenoid resistance is 100 kΩ or more open circuit when
solenoid is not energized
Open or short in shift solenoid valve No. 1/No. 2 circuit
Shift solenoid valve No. 1/No. 2
ECM
DI410−01

D02260
Shift Solenoid
Valve SL Transaxle
E15
Y−B
E41
SLB+ ECM
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−203
1996 RAV4 (RM447U)
DTC P0773 Shift Solenoid E Electrical Malfunction
(Shift Solenoid Valve SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure
acting on the lock−up relay valve, which then controls operation of the lock−up clutch.
Fail Safe Function:
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.
DTC No.DTC Detecting ConditionTrouble Area
P0773
Either (a) or (b) is detected for 1 time (2 trip detection logic)
(a) Solenoid resistance is 8 Ω or less short circuit when sole-
noid is energized.
(b) Solenoid resistance is 100 kΩ or more open circuit when
solenoid is not energized
Open or short in shift solenoid valve SL circuit
Shift solenoid valve SL
ECM
WIRING DIAGRAM
DI412−01