TOYOTA RAV4 1996 Service Repair Manual

DI40F−02
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−141
1996 RAV4 (RM447U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check the
circuits for each symptom in the order given in the charts on the following pages and proceed to the page
given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On−Vehicle repair Matrix Chart
Chapter 3: Off−Vehicle repair Matrix Chart
When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to chapter 2
or 3, proceed as instructed.
(1) If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow
chart for each circuit, proceed to the circuit with the next highest number in the table to continue
the check.
(2) If the trouble still occurs even though there are no abnormalities in any of the other circuits, then
check and replace the ECM.
Chapter 1: Electronic Circuit Matrix Chart
SymptomSuspect AreaSee page
No up−shift (A particular gear, from 1st to 3rd gear, is not up−
shifted)7. ECMDI−140
No up−shift (3rd → O/D)
1. O/D main switch & O/D OFF indicator light circuit
2. O/D cancel signal circuit
3. ECMDI−161
DI−166
DI−140
No down−shift (O/D → 3rd)
1. O/D main switch & O/D OFF indicator light circuit
2. O/D cancel signal circuit
3. ECMDI−161
DI−166
DI−140
No down−shift (A particular gear, from 1st to 3rd gear, is not
down−shifted)1. ECMDI−140
No lock−up1. Stop light switch circuit
2. ECMDI−159
DI−140
No lock−up off1. Pattern select switch circuit
2. ECMDI−168
DI−140
Shift point too high or too low1. ECMDI−140
Up−shift to O/D from 3rd while O/D main switch is OFF1. O/D main switch & O/D OFF indicator light circuit
2. ECMDI−161
DI−140
Up−shift to O/D from 3rd while engine is cold1. ECMDI−140
No kick−down1. ECMDI−140
Engine stalls when starting off or stopping1. ECMDI−140
Chapter 2: On−Vehicle Repair
(: A241E, A244E, A245E, A246E Automatic Transaxle Repair Manual Pub. No. RM390U)
SymptomSuspect AreaSee page
Does not move in any forward position1. Off−vehicle matrix chart−
Does not move in reverse position1. Off−vehicle matrix chart−
Does not move in any position
1. Primary regulator valve
2. Manual valve
3. Throttle valve
4. Off−vehicle matrix chart


−
No up−shift (1st → 2nd)1. 1−2 shift valve
2. Off−vehicle matrix chart
−

DI−142
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U) No up−shift (2nd → 3rd)
1. 2−3 shift valve
2. Off−vehicle matrix chart
−
No up−shift (3rd → O/D)1. 3−4 shift valve
2. Off−vehicle matrix chart
−
No down−shift (O/D → 3rd)1. 3−4 shift valve
2. Off−vehicle matrix chart
−
No down−shift (3rd → 2nd)1. 2−3 shift valve
2. Off−vehicle matrix chart
−
No down−shift (2nd → 1st)1. 1−2 shift valve
2. Off−vehicle matrix chart
−
Harsh engagement (N → R)1. C2 accumulator
2. Off−vehicle matrix chart
−
Harsh engagement (N → D)1. C1 accumulator
2. Off−vehicle matrix chart
−
Harsh engagement (N → L)
1. 1. C1 accumulator
2. Low coast modulator valve
3. Off−vehicle matrix chart

−
Harsh engagement (1st → 2nd (D position) )
1. Accumulator control valve
2. B
2 Accumulator
3. Off−vehicle matrix chart


−
Harsh engagement (1st → 2nd (2 position) )
1. B2 accumulator
2. Accumulator control valve
3. 2nd coast modulator valve
4. Off−vehicle matrix chart


−
Harsh engagement (1st → 2nd → 3rd → O/D)1. Throttle valve
2. Primary regulator valve

Harsh engagement (2nd → 3rd)
1. C2 accumulator
2. Accumulator control valve
3. Off−vehicle matrix chart

−
Harsh engagement (3rd → O/D)
1. B2 accumulator
2. C
3 accumulator
3. Off−vehicle matrix chart


−
Harsh engagement (O/D → 3rd)1. B4 accumulator
2. Off−vehicle matrix chart
−
Harsh engagement (3rd → 2nd)1. C2 Accumulator
2. Off−vehicle matrix chart
−
Slip (Forward & Reverse)1. Primary regulator valve
2. Off−vehicle matrix chart
−
Slip (R position)1. Off−vehicle matrix chart−
Slip (1st)1. Off−vehicle matrix chart−
Slip (2nd)1. Off−vehicle matrix chart−
Slip (3rd)1. Off−vehicle matrix chart−
Slip (O/D)1. Off−vehicle matrix chart−
No engine braking (1st (L position))1. Low coast modulator valve
2. Off−vehicle matrix chart
−
No engine braking (2nd (2 position))1. 2nd coast modulator valve
2. Off−vehicle matrix chart
−
No kick−down
1. 1−2 shift valve
2. 2−3 shift valve
3. 3−4 shift valve



− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−143
1996 RAV4 (RM447U) Poor acceleration
1. Primary regulator valve
2. Off−vehicle matrix chart
−
No lock−up1. Look−up relay valve
2. Off−vehicle matrix chart
−
Chapter 3: Off−Vehicle Repair
(: A241E, A244E, A245E, A246E Automatic Transaxle Repair Manual Pub. No. RM390U)
SymptomSuspect AreaSee page
Does not move in any forward position1. Forward clutch (C1)
Does not move in reverse position
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. U/D brake (B
4)



Does not move in any position
1. Torque converter clutch
2. Oil pump
3. U/D one−way clutch (F
3)
4. Front planetary gear
5. Rear planetary gear
6. On−vehicle matrix chart
AX−20




−
No up−shift (1st → 2nd)
1. 2nd brake (B2)
2. No. 1 one−way clutch (F
1)
3. On−vehicle matrix chart


−
No up−shift (2nd → 3rd)1. Direct clutch (C2)
2. On−vehicle matrix chart
−
No up−shift (3rd → O/D)1. U/D brake (C3)
2. On−vehicle matrix chart
−
No down−shift (O/D → 3rd)
1. U/D brake (B4)
2. U/D one−way clutch (F
3)
3. On−vehicle matrix chart


−
No down−shift (3rd → 2nd)1. No. 1 one−way clutch (F1)
2. On−vehicle matrix chart
−
No down−shift (2nd → 1st)1. No. 2 one−way clutch (F2)
2. On−vehicle matrix chart
−
Harsh engagement (N → R)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. On−vehicle matrix chart


−
Harsh engagement (N → D)1. Forward clutch (C1)
2. On−vehicle matrix chart
−
Harsh engagement (N → L)
1. Forward clutch (C1)
2. 1st and reverse brake (B
3)
3. On−vehicle matrix chart


−
Harsh engagement (1st → 2nd (D position))
1. 2nd brake (B2)
2. No. 1 one−way clutch (F
1)
3. On−vehicle matrix chart


−
Harsh engagement (1st → 2nd (2 position))
1. 2nd coast brake (B1)
2. 2nd brake (B
2)
3. No. 1 one−way clutch (F
1)
4. On−vehicle matrix chart



−
Harsh engagement (1st → 2nd → 3rd → O/D)1. On−vehicle matrix chart−
Harsh engagement (2nd → 3rd)1. Direct clutch (C2)
2. On−vehicle matrix chart
−
Harsh engagement (3rd → O/D)1. U/D clutch (C3)
2. On−vehicle matrix chart
−

DI−144
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U) Harsh engagement (O/D → 3rd)
1. U/D brake (B4)
2. On−vehicle matrix chart
−
Harsh engagement (3rd → 2nd)1. Direct clutch (C2)
2. On−vehicle matrix chart
−
Harsh engagement (Lock−up)1. Torque converter clutchAX−20
Slip (Forward & reverse)
1. Torque converter clutch
2. Oil pump
3. On−vehicle matrix chartAX−20

−
Slip (R position)1. Direct clutch (C2)
2. 1st and reverse brake (B
3)


Slip (1st)
1. Forward clutch (C1)
2. No. 2 one−way clutch (F
2)
3. U/D one−way clutch (F
3)



Slip (2nd)
1. Forward clutch (C1)
2. 2nd brake (B
2)
3. No. 1 one−way clutch (F
1)
4. U/D one−way clutch (F
3)

Slip (3rd)
1. Forward clutch (C1)
2. Direct clutch (C
2)
3. U/D one−way clutch (F
3)



Slip (O/D)
1. Forward clutch (C1)
2. Direct clutch (C
2)
3. U/D clutch (C
3)



No engine braking (1st (L position))1. 1st and reverse brake (B3)
2. On−vehicle matrix chart
−
No engine braking (2nd (2 position))1. 2nd coast brake (B1)
2. On−vehicle matrix chart
−
No kick−down1. On−vehicle matrix chart−
Poor acceleration
1. Torque converter clutch
2. Forward clutch (C
1)
3. On−vehicle matrix chart
AX−20

−
No lock−up1. Torque converter clutch
2. On−vehicle matrix chartAX−20
−
Engine stalls when staring off or stopping1. Torque converter clutchAX−20

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

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

Q06970
Shift Solenoid
Valve No. 1Transaxle
Shift Solenoid
Valve No. 2
To Cruise Control ECUS2ECM
P−B 3
E1
E1
E4 E4
1
152
PB+ B+
S1
Q08088
S1
S2
DI−148
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Measure resistance between terminal S1 or S2 of ECM and body ground.
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Measure the resistance between terminal S1 or S2 of the ECM
and body ground.
OK:
Resistance: 11 − 15 Ω
OK Check and replace ECM.
NG

Q08587Q08344D04174
S2
S2S1
S1
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−149
1996 RAV4 (RM447U)
2 Check harness and connector between ECM and automatic transaxle solenoid
connector.
PREPARATION:
(a) Disconnect the connector from the ECM.
(b) Disconnect the solenoid connector from the automatic
transaxle.
CHECK:
Check the harness and connector between terminal S1 or S2
of the ECM and terminal S1 or S2 of the solenoid connector.
OK:
There is no open and no short circuit.
NG Repair or replace harness or connector.
OK

Q08588Q08589
D04175
DI−150
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
3 Check shift solenoid valve No. 1 or No. 2.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
Measure the resistance between the solenoid connector and
solenoid body.
OK:
Resistance: 11 − 15 Ω
CHECK:
Connect positive  lead to terminal of the solenoid connector,
negative  lead to the solenoid body.
OK:
The solenoid makes on operating noise.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
Repair or replace solenoid wire.