engine TOYOTA RAV4 1996 Service Repair Manual

S02412
A/C Amplifier
B+
R−Y
E621
ACTECM
E1 7 DI−122
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
A/C Cut Control Circuit
CIRCUIT DESCRIPTION
This circuit cuts air conditioning operation during vehicle acceleration in order to increase acceleration per-
formance. During acceleration with the vehicle speed at 25 km/h (16 mph) or less, engine speed at 1,200
rpm or less and throttle valve opening angle at 60° or more, the A/C magnet switch is turned OFF for several
seconds.
WIRING DIAGRAM
DI408−01

− DIAGNOSTICSENGINE
DI−123
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
TOYOTA hand−held tester:
1 Connect the TOYOTA hand−held tester and check operation of air conditioning
cut control.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand−held tester main switch ON.
(c) Starter the engine and air conditioning switch ON.
HINT:
A/C magnet clutch is turned ON.
(d) Select the ACTIVE TEST mode on the TOYOTA hand−held tester.
CHECK:
Check operation of A/C magnet clutch cut when air conditioning cut control is operated by the TOYOTA
hand−held tester.
OK:
A/C magnet clutch is turned OFF.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−20).
NG
2 Check for open and short in harness and connector between ECM and A/C am-
plifier (See page IN−30).
NG Repair or replace harness or connector.
OK

P23738
ACT
(+)
DI−124
− DIAGNOSTICSENGINE
1996 RAV4 (RM447U)
3 Check voltage between terminal ACT of ECM and body ground.
PREPARATION:
(a) Remove side trim cover (See page SF−61).
(b) Start the engine.
CHECK:
Measure voltage between terminal ACT of ECM connector and
body ground when A/C switch is turned to ON and OFF.
OK:
A/C switch conditionVoltage
ON9 − 14 V
OFFBelow 2.0 V
NG Check and replace A/C amplifier.
OK
Check and replace ECM (See page IN−30).
OBDII scan tool (excluding TOYOTA hand−held tester)
1 Check voltage between terminal ACT of ECM and body ground (See same page,
step 3).
OK Check and replace ECM (See page IN−30).
NG
2 Check for open and short in harness connector between ECM and A/C amplifier
(See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace A/C amplifier.

Q08848
DI−128
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
mode for technicians to simulate malfunction symp-
toms and perform troubleshooting. Most DTCs use
2 trip detection logic (*) to prevent erroneous detec-
tion. By switching the ECM to check mode when
troubleshooting, the technician can cause the MIL
to light up for a malfunction that is only detected
once or momentarily (TOYOTA hand−held tester)
(See page DI−127).
*2 trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the second test
drive, this second detection causes the MIL to light up.
2. Normal Mode:
INSPECT DIAGNOSIS
(a) Check the MIL.
(1) The MIL lights up when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE−2).
(2) When the engine starts, the MIL should go off. If the
lamp remains on, the diagnosis system has de-
tected a malfunction or abnormality in the system.
(b) Check the DTC.
NOTICE:
TOYOTA hand−held tester only:
When the diagnostic system is switched from the normal
mode to the check mode, it erases all DTCs and freezed
frame data recorded in the normal mode. So before switch-
ing modes, always check the DTCs and freezed frame data,
and note them down.
(1) Prepare the OBD II scan tool (complying with SAE
J1978) or TOYOTA hand−held tester.
(2) Connect the OBD II scan tool or TOYOTA hand−
held tester to the DLC3.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or TOYOTA hand−held tester switch ON.
(4) Use the OBD II scan tool or TOYOTA hand−held
tester to check the DTCs and freezed frame data.
Note them down (For operating instructions, see
the OBDII scan tool’s instruction book.).

FI3605
013 sec. ON
OFF
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−129
1996 RAV4 (RM447U)
(5) See page DI−138 to confirm the details of the
DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding TOYOTA hand−held tester) to check the DTCs, use
the normal mode. For codes on the DTC chart subject to ”2
trip detection logic”, turn the ignition switch off after the
symptoms have been simulated for the first time. Then re-
peat the simulation process again. When the program has
been simulated twice, the MIL lights up and the DTCs are
recorded in the ECM.
3. Check Mode:
INSPECT DIAGNOSIS
HINT:
TOYOTA hand−held tester only:
Compared to the normal mode, the check mode has high sens-
ing ability to detect malfunctions.
Furthermore, the same diagnostic items which are detected in
the normal mode can also be detected in the check mode.
(a) Check the DTC.
(1) Initial conditions.
Battery positive voltage 11 V or more
Throttle valve fully closed
Transaxle in the PARK position
Air conditioning switched off
(2) Prepare the TOYOTA hand−held tester.
(3) Connect the TOYOTA hand−held tester to the
DLC3.
(4) Turn the ignition switch ON and switch the TOYOTA
hand−held tester ON.
(5) Switch the TOYOTA hand−held tester from the nor-
mal mode to the check mode (Check that the MIL
flashes.).
(6) Start the engine (The MIL goes off after the engine
start.).
(7) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc.
(8) After simulating the malfunction conditions, use the
TOYOTA hand−held tester diagnosis selector to
check the DTCs and freezed frame data, etc.
HINT:
Take care not to turn the ignition switch OFF.
Turning the ignition switch off switches the diagnosis system
from check mode to normal mode, so all DTCs, etc. are erased.
(9) After checking the DTC, inspect the applicable cir-
cuit.

− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−131
1996 RAV4 (RM447U)
4. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand−held tester only:
By putting the vehicle’s ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic
and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.
(1) Clear the DTCs (See step 3).
(2) Set the check mode (See step 3).
(3) Do simulation test (See page IN−20).
(4) Check the connector connection and terminal (See page IN−30).
(5) Visual check and contact pressure (See page IN−20).
(6) Handle the connector (See page IN−20).
5. PROBLEM SYMPTOM CONFIRMATION
Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms of the
trouble. If the problem is that the transaxle does not up−shift, down−shift, or the shift point is too high or too
low, conduct the following road test to confirm the automatic shift schedule and simulate the problem symp-
toms.
6. ROAD TEST
NOTICE:
Do the test at normal operating ATF temperature 50 − 80°C (122 − 176°F).
(a) D position test.
Shift into the D position, keep the accelerator pedal constant at the full throttle valve opening position
and check the following points:
(1) Check up− shift operation.
Check that 1 → 2, 2 → 3 and 3 → O/D up−shift takes place, at the shift point shown in the automat-
ic shift schedule (See page SS−32).
HINT:
O/D Gear Up−shift Prohibition Control:
Engine coolant temperature is 50°C (122°F) or less.
If there is a 10km/h (6 mph) difference between the set cruise control speed and vehicle speed.
O/D main switch is pushed ON (During the O/D OFF indicator light lights up.).
O/D Gear Lock−up Prohibition Control:
Brake pedal is depressed.
Engine coolant temperature is 50°C (122°F) or less.
(2) Check for shift shock and slip.
Check for shock and slip at the 1 → 2, 2 → 3 and 3 → O/D up−shifts.
(3) Check for abnormal noise and vibration.
Run at the D position lock−up or O/D gear and check for abnormal noise and vibration.
HINT:
The check for the cause of abnormal noise and vibration must be performed very thoroughly as it could also
be due to loss of balance in the torque converter clutch, etc.
(4) Check kick−down operation.
While running in the D position, 2nd, 3rd and O/D gears, check that the possible kick−down ve-
hicle speed limits for 2 → 1, 3 → 2 and O/D → 3 kick−downs conform to those indicated on the
automatic shift schedule (See page SS−32).
(5) Check abnormal shock and slip at kick−down.
(6) Check the lock−up mechanism.
Drive in the D position, O/D gear, at a steady speed (lock−up ON) of about 75 km/h (47
mph).
Lightly depress the accelerator pedal and check that the RPM does not change abruptly.
If there is a big jump in RPM, there is no lock−up.

Q06070
AT3417
OK if hot
Add if hot DI−132
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
(b) 2 position test.
Shift into the 2 position and, while drive with the accelerator pedal held constantly at the full throttle
valve opening position, check on the following points:
(1) Check up−shift operation.
Check that the 1 → 2 up−shift takes place and that the shift point conforms to the automatic shift
schedule (See page SS−32).
HINT:
There is no O/D up−shift and lock−up in the 2 position.
(2) Check engine braking.
While running in the 2nd gear of the 2 position, release the accelerator pedal and check the en-
gine braking effect.
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up−shift and
down−shift.
(c) L position test.
Shift into the L position and while driving with the accelerator pedal held constantly at the full throttle
valve opening position, check the following points:
(1) Check no up−shift.
While running in the L position, check that there in no up−shift to 2nd gear.
(2) Check engine braking.
While running in the L position, release the accelerator pedal and check the engine braking ef-
fect.
(3) Check for abnormal noises during acceleration and deceleration.
(d) R position test.
Shift into the R position and while starting at full throttle, check for slipping.
CAUTION:
Before conducting this test ensure that the test area is free from personnel and obstructions.
(e) P position test.
Stop the vehicle on a gradient (more than 5°) and after shifting into the P position, release the parking
brake. Then check that the parking lock pawl holds the vehicle in place.
7. BASIC INSPECTION
(a) Check the fluid level.
HINT:
Drive the vehicle so that the engine and transaxle are at
normal operating temperature.
Fluid temperature: 70 − 80°C (158 − 176°F)
Only use the COOL range on the dipstick as a rough refer-
ence when the fluid is replaced or the engine does not
run.
(1) Park the vehicle on a level surface and set the park-
ing brake.
(2) With the engine idling and the brake pedal de-
pressed, shift the shift lever into all positions from
the P to L position and return to the P position.
(3) Pull out the oil level gauge and wipe it clean.
(4) Push it back fully into the pipe.
(5) Pull it out and check that the fluid level is in the HOT
range.
If the level is at the low side, add new fluid.

OR0028
Q06076
AT3417
OK if hot
Add if hot
AT4252
0 − 1 mm
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−133
1996 RAV4 (RM447U)
Fluid type: ATF DEXRON ®II
NOTICE:
Do not overfill.
(b) Check the fluid condition.
If the fluid smells burnt or is black, replace it.
(c) Replace the fluid.
(1) Remove the drain plug and drain the fluid.
(2) Reinstall the drain plug securely.
(3) With the engine OFF, add new fluid through the oil
filler pipe.
Fluid type: ATF DEXRON ®II
Capacity:
Drain and refill: 3.3 liters (3.5 US qts, 2.9 lmp. qts)
(4) Start the engine and shift the shift lever into all posi-
tions from P to L position and then shift into P posi-
tion.
(5) With the engine idling, check the fluid level. Add
fluid up to the COOL level on the dipstick.
(6) Check the fluid level at the normal operating tem-
perature 70 − 80°C (158 − 176°F) and add as nec-
essary.
NOTICE:
Do not overfill.
(d) Check the fluid leaks.
Check for leaks in the transaxle.
If there are leaks, it is necessary to replace O−rings, gaskets,
oil seals, plugs or other parts.
(e) Inspect and adjust throttle cable.
(1) Check that the throttle valve is fully closed.
(2) Check that the inner cable is not slack.
(3) Measure the distance between the outer cable end
and stopper on the cable.
Standard distance: 0 − 1 mm (0 − 0.04 in.)
If the distance is not within the standard, adjust the cable by the
adjusting nuts.

Q08832
Q08831N
RP
Q07907
Neutral
Basic
Line
Groove
DI−134
− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
1996 RAV4 (RM447U)
(f) Inspect and adjust shift lever position.
When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator correctly indicates the position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures:
(1) Loosen the nut on the control shaft lever.
(2) Push the control shaft lever fully downward.
(3) Return the control shaft lever 2 notches to the N
position.
(4) Set the shift lever to the N position.
(5) While holding the shift lever lightly toward the R
position side, tighten the shift lever nut.
Torque: 6.9 N·m (70 kgf·cm, 61 in·lbf)
(6) Start the engine and make sure that the vehicle
moves forward when shifting the lever from the N to
D position and reverses when shifting it to the R
position.
(g) Inspect and adjust park/neutral position switch.
Check that the engine can be started with the shift lever
only in the N or P position, but not in other positions.
If not as stated above, carry out the following adjustment proce-
dure:
(1) Loosen the park/neutral position switch bolt and set
the shift lever to the N position.
(2) Align the groove and neutral basic line.
(3) Hold in position and tighten the bolt.
Torque: 5.4 N·m (55 kgf·cm, 48 in·lbf)
HINT:
For continuity inspection of the park/neutral position switch, see
page DI−156.
(h) Inspect the idle speed.
Idle speed: 700 ± 50 rpm (In N position and A/C OFF)
8. MECHANICAL SYSTEM TESTS
(a) Measure the stall test
The object of this test is to check the overall performance of the transaxle and engine by measuring
the stall speeds in the D and R positions.
NOTICE:
Do the test at normal operation ATF temperature 50 − 80°C (122 − 176°F).
Do not continuously run this test longer than 5 seconds.
To ensure safety, conduct this test in a wide, clear, level area which provides good traction.
The stall test should be always carried out in pairs. One technician should observe the condi-
tions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
(1) Chock the 4 wheels.
(2) Fully apply the parking brake.
(3) Connect OBD II scan tool or TOYOTA hand−held tester to the DLC3.

− DIAGNOSTICSAUTOMATIC TRANSAXLE (A241E)
DI−135
1996 RAV4 (RM447U)
(4) Start the engine and check idle speed.
(5) Keep your left foot pressed firmly on the brake pedal.
(6) Shift into the D position. Fully depress the accelerator pedal. Quickly read the stall speed at this
time.
Stall speed: 2,370 ± 150 rpm
(7) Do the same test in R position.
Stall speed: 2,370 ± 150 rpm
Evaluation:
ProblemPossible cause
Stall speed low in D and R positions
Engine output may be insufficient
Stator one−way clutch is operating properly
HINT:
If more than 600 rpm below the specified value, the torque converter clutch could
be faulty
Stall speed high in D position
Line pressure too low
Forward clutch slipping
No. 2 one−way clutch not operating properly
U/D one−way clutch not operating properly
Stall speed high in R position
Line pressure too low
Direct clutch slipping
1st and reverse brake slipping
U/D brake slipping
Stall speed high in D and R positions
Line pressure too low
Improper fluid level
U/D one−way clutch not operating properly
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before
the shock can be felt. This is used for checking the condition of the U/D direct clutch, forward clutch,
direct clutch, and 1st and reverse brake.
NOTICE:
Do the test at normal operating ATF temperature 50 − 80°C (122 − 176°F).
Make sure to allow 1 minute interval between tests.
Take 3 measurements and take the average value.
(1) Fully apply the parking brake
(2) Start the engine and check idle speed.
Idle speed: 700 ± 50 rpm (In N position and A/C OFF)
(3) Shift the shift lever from the N to D position. Using a stop watch, measure the time it takes from
shifting the lever until the shock is felt.
Time lag: N → D Less than 1.2 seconds
In the same way, measure the time lag for N → R.
Time lag: N → R Less than 1.5 seconds
Evaluation:
ProblemPossible cause
N → D time lag is longer
Line pressure too low
Forward clutch worn
U/D one−way clutch not operating properly
N → R time lag is longer
Line pressure too low
Direct clutch worn
1st and reverse brake worn
U/D brake worn