TOYOTA RAV4 1996 Service Repair Manual

DI40W−02
Z16062
ECM Terminals
E4E5
E6
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−191
1996 RAV4 (RM447U)
TERMINALS OF ECM
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
SPD (E6−9) − E1 (E4−14)V−W − BRDisconnect cruise control connector and IG ON
Turn one front wheel slowlyPulse signal is output
Below 1.5 ↔ 4 − 6
S1 (E4−2) − E1 (E4−14)P−B − BR
IG OFF Disconnect ECM connector11 − 15 Ω
IG ON10 − 14
1st or 2nd gear10 − 14
3rd or O/D gearBelow 1
S2 (E4−15) − E1 (E4−14)P − BR
IG OFF Disconnect ECM connector11 − 15 Ω
IG ONBelow 1
2nd or 3rd gear10 − 14
1st or O/D gearBelow 1
SL (E4−1) − E1 (E4− 4)Y−B − BR
IG OFF Disconnect ECM connector11 − 15 Ω
IG ONBelow 1
Vehicle driving under look−up position10 − 14
OD1 (E6−20) − E1 (E4−14)Y−B − BRIG ON4 − 6
OD2 (E6−7) − E1 (E4−14)LG − BRO/D main switch ON (O/D ON)10 − 14
O/D main switch OFF (O/D OFF)Below 1
L (E6−19) − E1 (E4−14)LG − BRIG ON Shift lever L position10 − 14
IG ON Shift lever other than L positionBelow 1
R (E6−8) − E1 (E4−14)R−B − BRIG ON Shift lever R position10 − 14
IG ON Shift lever other than R positionBelow 1
2 (E−18)− E1 (E4−14)LG−R − BRIG ON Shift lever 2 position10 − 14
IG ON Shift lever other than R positionBelow 1
NSW (E6−22) − E1 (E4−14)B−W − BRIG ON Shift lever P or N positionBelow 1
IG ON Shift lever other than P or N position10 − 14
B/K (E6−4) − E1 (E4−14)G−W − BRIG ON Brake papel is depressed7.5 − 14
IG ON Brake papel is releasedBelow 1
ST (E6−13) − E1 (E4−14)LG − BRIG ONBelow 1
SLD+
(E6−3) − SLD− (E6−2)L−B − BR−BIG ONPulse generation
FR+
(E4−8) − FR− (E4−7)Y−R − W−RIG ON Standing still1 or less
IG ON Vehicle moving (more than 20 km/h)Pulse generation
RR+ (E5−14)− RR− (E5−13)L−Y − R−LIG ON Standing still1 or less
IG ON Vehicle moving (more than 20 km/h)Pulse generation
P (E6−15) − E1 (E4−14)R−G − BRPWR pattern7.5 − 14
NORM patternBelow 1

DI40X−02
DI−192
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
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)2. ECMDI−191
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−223
DI−221
DI−191
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−223
DI−221
DI−191
No down−shift (A particular gear, from 1st to 3rd gear, is not
down−shifted)1. ECMDI−191
No lock−up1. Stop light switch circuit
2. ECMDI−227
DI−191
No lock−up off1. ECMDI−191
Shift point too high or too low1. Pattern select switch circuit
2. ECMDI−229
DI−191
Up−shifts to O/D from 3rd while O/D main switch is OFF1. O/D main switch & O/D OFF indicator light circuit
2. ECMDI−223
DI−191
Up−shifts to O/D from 3rd while engine is cold1. ECMDI−191
No kick−down1. ECMDI−191
Engine stalls when starting off or stopping1. ECMDI−191
”A/T OIL” indicator light does not light up or does not goes off1. A/T temperature switchDI−191
Chapter 2: On−Vehicle Repair
(: A540H Automatic Transaxle Repair Manual Pub. No. RM488U)
SymptomSuspect AreaSee page
Vehicle does not move in R position
1. 1−2 shift valve
2. 2−3 shift valve
3. Throttle valve
4. Off−vehicle repair matrix chart


−
Vehicle does not move in any forward position or reverse position
1. Manual valve
2. Primary regulator valve
3. Secondary regulator valve
4. Off−vehicle repair matrix chart


−

− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−193
1996 RAV4 (RM447U) No lock−up
1. Lock−up relay valve
2. Off−vehicle repair matrix chart
−
No lock− up OFF1. Lock−up relay valve
2. Off−vehicle repair matrix chart
−
No kick−down
1. Throttle cable
2. 1−2 shift valve
3. 2−3 shift valve
4. 3−4 shift valve
5. Down shift plug




No engine braking (1st (L position))
1. Low coast modulator valve
2. Low coast modulator valve
3. Off−vehicle repair matrix chart

−
No engine braking (2nd (2 position))
1. 2nd coast modulator valve
2. 2nd lock valve
3. Off−vehicle repair matrix chart

−
No up−shift (1st → 2nd)1. 1−2 shift valve
2. Off−vehicle repair matrix chart
−
No up−shift (2nd → 3rd)1. 2−3 shift valve
2. Off−vehicle repair matrix chart
−
No up−shift (3rd → O/D)1. 3−4 shift valve
2. Off−vehicle repair matrix chart
−
No down−shift (O/D → 3rd)1. 3−4 shift valve
2. Off−vehicle repair matrix chart
−
No down shift (3rd → 2nd)1. 2−3 shift valve
2. Off−vehicle repair matrix chart
−
No down shift (2nd → 1st)1. 1−2 shift valve
2. Off−vehicle repair matrix chart
−
Harsh engagement (N → R)1. No. 1 and No. 2 accumulator control valve
2. Off−vehicle repair matrix chart
−
Harsh engagement (N → D)1. C1 accumulator
2. Off−vehicle repair matrix chart
−
Harsh engagement (N → L)1. Low coast modulator valve
Harsh engagement (1st → 2nd (D position))1. B2 accumulator
2. Off−vehicle repair matrix chart
−
Harsh engagement (1st → 2nd (2 position))1. 2nd coast modulator valve
Harsh engagement (1st → 2nd → 3rd)1. Throttle modulator valve
2. No. 1 and No. 2 accumulator control valve

Harsh engagement (1st → 2nd → 3rd → O/D)1. No. 1 and No. 2 accumulator control valve
Harsh engagement (2nd → 3rd)1. C2 accumulator
Harsh engagement (3rd → O/D)1. B0 accumulator
2. Off−vehicle repair matrix chart
−
Harsh engagement (O/D → 3rd)1. C0 accumulator
2. B
0 accumulator


Harsh engagement (3rd → 2nd)
1. B2 accumulator
2. C
0 accumulator
3. B
0 accumulator
4. 2nd coast modulator valve
5. Off−vehicle repair matrix chart




−
Sliper shudder in forward and reverse (Directry after E/G start)
1. Pressure relief valve
2. Oil starter
3. Off−vehicle repair matrix chart
AX−8
−

DI−194
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U) Front or rear wheel is slipping
1. Shift restrict reverse ball
2. Solenoid modulator valve
3. Differential control valve
4. Off−vehicle repair matrix chart


−
Shift point too high or too low1. Secondary regulator valve
Chapter 3: Off−Vehicle Repair
(: A540H Automatic Transaxle Repair Manual Pub. No. RM488U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position
1. Forward clutch (C1)
2. No. 2 one−way clutch (F
2)
3. 1st and reverse brake (B
3)
4. 2nd coast brake (B
1)
5. 2nd brake (B
2)
6. Direct clutch (C
2)






Vehicle does not move in reverse position
1. 2nd coast brake (B1)
2. Front planetary gear
3. Rear planetary gear
4. Direct clutch (C
2)
5. O/D direct clutch (C
0)
6. 1st and reverse brake (B
3)






Vehicle does not move in any forward position and reverse posi-
tion
1. Parking lock pawl
2. Oil pump
3. O/D one−way clutch (F
0)
4. O/D direct clutch (C
0)
5. O/D brake (B
0)
6. Front planetary gear
7. Rear planetary gear
8. O/D planetary gear








No lock−up1. Torque converter clutchAX−22
No lock−up OFF1. Torque converter clutchAX−22
Large shock during lock−up1. Torque converter clutchAX−22
E/G stalls when starting off and stopping1. Torque converter clutchAX−22
No up−shift (1st → 2nd)1. 2nd brake (B2)
2. No. 1 one−way clutch (F
1)


No up−shift (2nd → 3rd)1. Direct clutch (C2)
No up−shift (3rd → O/D)1. O/D brake (B0)
No down−shift (2nd → 1st)1. 2nd coast brake (B1)
Harsh engagement (N → R)1. Direct clutch (C2)
2. 1st and reverse brake (B
3)


Harsh engagement (N → D)1. Forward clutch (C1)
Harsh engagement (1st → 2nd (D position))1. 1st and reverse brake (B3)
Harsh engagement (2nd → 3rd)1. 2nd coast brake (B1)
Harsh engagement (3rd → O/D)
1. O/D direct clutch (C0)
2. O/D brake (B
0)
3. O/D planetary gear



Slip on shudder (Forward and reverse (After warm−up))
1. Torque converter clutch
2. Oil pump
3. No. 1 one−way clutch (F
1)
4. O/D direct clutch (C
0)
AX−22



Slip on shudder (Forward and reverse (Direct after E/G start))1. Torque converter clutchAX−22

− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−195
1996 RAV4 (RM447U) Slip on shudder (R range)
1. Direct clutch (C2)
2. O/D direct clutch (C
0)
3. O/D one−way clutch (F
0)



Slip on shudder (1st)1. Forward Clutch (C1)
2. No. 2 one−way Clutch (F
2)


Slip on shudder (2nd)1. 2nd brake (B2)
2. No. 1 one−way clutch (F
1)


Slip on shudder (2nd → 3rd (Up−shift))1. Direct clutch (C2)
Slip on shudder (3rd)1. Direct clutch (C2)
Slip on shudder (O/D)1. O/D brake (B0)
No engine braking (1st − 3rd)1. O/D direct clutch (C0)
No engine braking (1st (L position))1. 1st and reverse brake (B3)
No engine braking (2nd (2 position))2. 2nd coast brake (B1)
Poor acceleration (All positions)1. Torque converter clutch
2. Oil pumpAX−22

Poor acceleration (O/D)1. O/D direct clutch (C0)
2. O/D planetary gear

Poor acceleration (Other than O/D)1. O/D brake (B0)
2. O/D planetary gear

Poor acceleration (Other than 2nd)1. 2nd coast brake (B1)
2. 2nd brake (B
2)


Poor acceleration (1st and 2nd)1. O/D brake (B0)
Poor acceleration (1st and R position)1. 1st and reverse brake (B3)
Poor acceleration (R position)1. Forward clutch (C1)
Front or rear wheel is slipping1. Center differential clutch

DI40Y−01
DI−196
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
1996 RAV4 (RM447U)
CIRCUIT INSPECTION
DTC P0500 Vehicle Speed Sensor Malfunction
See page DI−94.

Q08776
Shift Solenoid Valve No. 1 and No. 2
(−)(−) (+)(+)
S1 S2
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−197
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, gear required by the ECM does not
match 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 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 solenoid valves do not leak air.
(b) When battery positive voltage is supplied to the solenoid
valves, check that solenoid valve open.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
2 Check valve body (See page DI−192).
NG Repair or replace valve body.
OK
Repair or replace transaxle (See page
AX−19).
DI40Z−01

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

Q06970
Transaxle
Shift Solenoid
Valve No. 1
Shift Solenoid
Valve No. 2
To Cruse Control ECUS2S1ECM
P−B 3
E1 E4E4
P 6152
E1B+
B+
Q08088
S2S1
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
DI−199
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

Q08860
Solenoid
Connector
S2
S1
S1
S2
D02257
S1S2
Shift Solenoid Valve No. 1 and No. 2
DI−200
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A540H)
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
3 Check shift solenoid valve No. 1 or No. 2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the solenoid connector.
(d) Remove the shift solenoid valve No. 1 or No. 2.
CHECK:
Measure resistance between 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 an operating noise.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
Repair or replace solenoid wire.