sensor TOYOTA RAV4 1996 Service Manual Online

− DIAGNOSTICSENGINE
DI−93
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
HINT:
If DTC P0441, P0446 or P0450 is output after DTC P0440, first troubleshoot DTC P0441, P0446 or P0450.
If no malfunction is detected, troubleshoot DTC P0440 next.
1 Check voltage between terminals VC and E2 of ECM connector
(See page DI−76, step 9).
NG Check and replace ECM (See page IN−30).
OK
2 Check voltage between terminals PTNK and E2 of ECM connector
(See page DI−76, step 10).
OK Check and replace ECM (See page IN−30).
NG
3 Check for open and short in harness and connector between the vapor pressure
sensor and ECM (See page IN−30).
NG Repair or replace harness or connector.
OK
Replace the vapor pressure sensor.

Q00515
4−pulse 4−pluse
ECM Combination
Meter No.1 Vehicle
Speed Sensor
Transaxle DI−94
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The No.1 vehicle speed sensor outputs a 4−pulse signal for every revolution of the rotor shaft, which is ro-
tated by the transmission output shaft via the driven gear. After this signal is converted into a more precise
rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted
to the ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
No vehicle speed sensor signal to ECM under the following
conditions:
(2 trip detection logic)
For A/T:
(a) Park / neutral position switch is OFF
(b) Vehicle is being driven
For M/T:
(a) Engine speed is between 2,000 rpm and 5,000 rpm
(b) Vehicle is being driven at 88 km/h (54 mph) or more
Open or short in vehicle speed sensor circuit
Vehicle speed sensor
Combination meter
ECM
DI3ZZ−01

A04252
C9V−W
E6ECM
SPD5 V
2
9 Combination Meter
− DIAGNOSTICSENGINE
DI−95
1996 RAV4 (RM447U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check it the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit. See combination
meter troubleshooting.
OK

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

DI40G−01
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−145
1996 RAV4 (RM447U)
CIRCUIT INSPECTION
DTC P0500 Vehicle Speed Sensor Malfunction
See page DI−94.

Q08586
(−) (+)
(−)
(+)
DI−146
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
DTC P0750, P0755 Shift Solenoid A/B Malfunction
(Shift Solenoid Valve No. 1 / No. 2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear). The ECM then compares the actual gear with the shift schedule in the ECM memory to detect mechan-
ical trouble of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, the gear required by the ECM does not
match the actual gear (2 trip detection logic)Shift solenoid valve No. 1 / No. 2 is stuck open or closed
Valve body is blocked up or stuck
HINT:
Check the shift solenoid valve No. 1 when DTC P0750 is output and check shift solenoid valve No. 2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check shift solenoid valve No. 1 or No. 2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the shift solenoid valves do not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valves, check they open.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
2 Check valve body (See page DI−141).
NG Repair or replace valve body.
OK
Repair transaxle (See page AX−15).
DI40H−01

Q08599
Line
Pressure
Drain
Q08590
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−151
1996 RAV4 (RM447U)
DTC P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses signals from the throttle position sensor, air−flow
meter and crankshaft position sensor to monitor the engage-
ment condition of the lock−up clutch.
Then the ECM compares the engagement condition of the
lock−up clutch with the lock−up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SL,
valve body and torque converter clutch.
DTC No.DTC Detecting ConditionTrouble Area
P0770
Lock−up does not occur when driving in the lock−up range
(normal driving at 80 km/h (50 mph)) lock−up remains ON in
the lock−up OFF range (2 trip detection logic)Shift solenoid valve SL is stuck open or closed
Valve body is blocked up or stuck
Lock−up clutch
INSPECTION PROCEDURE
1 Check shift solenoid valve SL operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve SL.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve leak air.
(b) When battery positive voltage is supplied to the solenoid
valve, check it close.
NG Replace shift solenoid valve SL.
OK
DI40J−01

Q08867
Junction Connector
Fuse Block
FL Block
DI−168
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, and L posi-
tion and the lock−up patterns. Following the programs corresponding to the signals from the pattern select
switch, the park/neutral position switch and other various sensors, the ECM switches the solenoid valves
ON and OFF, and control the transmission gear change and the lock−up clutch operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of PWR indicator light.
CHECK:
Check if the PWR indicator light normally when the pattern select switch is set to NORM and PWR position.
OK:
Pattern select switchPWR indicator light
PWRLight up
NORMGoes off
NG Check and repair PWR indicator light (See page
BE−2).
OK
DI40P−02

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

DI40V−01
D02251
ATF Temperature
SwitchRear Speed Sensor
Shift Solenoid
Valve ST
Park/Neutral
Position Switch
Shift solenoid
Valve No. 1
Shift Solenoid
Valve No .2Shift Solenoid
Valve SLFront Speed SensorShift Solenoid
Valve SLDStop Light Switch O/D OFF Indicator Light O/D Main Switch
Pattern Select
Switch
MIL ECM
DI−190
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
PARTS LOCATION