1986 TOYOTA CAMRY V20 differential

3. (A540E)
INSPECT SOLENOID VALVES
(a) Disconnect the connector from Engine and ECT ECU
(b) Measure the resistance between S1, S2, SL and
body ground.
Resistance: 11 ± 15


(e) Apply battery voltage to each terminal.
Check that an operation noise can be heard from
the solenoid.
Center differential control switch AUTO position
Center differential control switch AUTO position Center differential control switch turned OFF
Center differential control switch turned OFF Coolant temp. below 122°F950°0 Throttle valve fully closed to fully open
Coolant temp. above 122°F (50°C0 O/D main switch turned OFF O/D main switch turned ON
Brake pedal is depressed
Brake pedal is releasedMeasuring condition
Except 2 range
Except N range Except P range
Except L range
NORM patternVoltage (V)
PWR pattern Terminal
N range2 range P range
L range
± AUTOMATIC TRANSAXLETroubleshooting (Electronic Control System) (A540E and
A540H)AT±218

5. (A540H)
INSPECT CENTER DIFFERENTIAL CONTROL
SOLENOID VALVES
(a) Disconnect the connector from ECT ECU.
(b) Measure the resistance between SD1, SD2 and body ground.
Resistance: 11 ± 15


(c) Apply battery voltage to each terminal.
Check that an operation noise can be heard from± the sole-
noid.
6. CHECK SOLENOID SEALS
If there is foreign material in the solenoid valve, there will be no
fluid control even with solenoid operation.
(a) Check No. 1 and No. 2 solenoid valves. (A540E,
A540H)
wApplying 5 kg/cm2 (71 psi, 490 kPa) of compressed air,
check that the solenoid valves open do not leak the air.
wWhen supply battery voltage to the solenoids, check that the
solenoid valves open.
(b) Check the lock±up solenoid valve. (A540E, A540H)
wApplying 5 kglcm2 (71 psi, 490 kPa) of compressed air, check
that the solenoid valve opens.
wWhen supply battery voltage to the solenoid, check that the
solenoid valve does not leak the air. 4. (A540H)
INSPECT SOLENOID VALVES
(a) Disconnect the connector from ECT ECU.
(b) Measure the resistance between S1, S2, SL and body
ground.
Resistance: 11 ± 15


(c) Apply battery voltage to each terminal.
Check that an operation noise can be heard from the
solenoid.
(c) Check No. 1 and No. 2 center differential control
solenoid valves. (A540H)
wApplying 5 kg/cm2 (71 psi, 490 kPa) of com-
pressed air, check that the solenoid valves
open do not leak the air.
wWhen supply battery voltage to the solenoids,
check that the solenoid valves open.
± AUTOMATIC TRANSAXLETroubleshooting (Electronic Control System) (A540E and
A540H)AT±219

11. (A540H) . . . .
INSPECT VEHICLE SPEED SENSOR AND REAR
WHEEL SPEED SENSOR
(a) Disconnect the connector from ECT ECU.
(b) Measure the resistance between FR± and FR* (ve-
hicle speed sensor, and between RR± and RR* (rear
wheel speed sensor). .
Resistance: 620
60


12. (A540E, A540H)
INSPECT PATTERN SELECTION SWITCH
Inspect that there is continuity between 5 and each terminal.
HINT: As there are diodes inside, be careful of the tester probe
polarity.
14. (A540H)
INSPECT CENTER DIFFERENTIAL CONTROL SWITCH
(a) Disconnect the connector from center differential control
switch.
(b) Inspect that there is continuity between terminals 1
and 4. 13. (A540E, A540H)
INSPECT O/D MAIN SWITCH
Inspect that there is continuity between terminals 1 and 3.
S/W
position . S/W
positionTerminal
TerminalTerminal NORM Pattern
AUTOPWR
OFFOFF
± AUTOMATIC TRANSAXLETroubleshooting (Electronic Control System) (A540E and
A540H)AT±221

5. REMOVE NEUTRAL START SWITCH
(a) Remove the manual shift lever.
(b) Pry off the lock washer and remove the manual valve
shaft nut.
(c) Remove the two bolts and pull out the neutral start
switch. 3. (A540H)
REMOVE DIFFERENTIAL SIDE GEAR INTERMEDIATE
SHAFT
(a) Screw in suitable bolt with washer into the side gear
intermediate shaft.
(b) Using SST, remove the side gear intermediate shaft.
SST 09520±32012
SEPARATE BASIC SUBASSEMBLY
1. (A540H)
REMOVE TRANSFER ASSEMBLY
(a) Remove the five nuts and three bolts.
(b) Using a plastic hammer, remove the transfer assembly
form the transaxle.
4. REMOVE UNION AND ELBOW
(a) Using an open end wrench, remove the union and el-
bow.
(b) Remove the O±rings from the union and elbow. 2. (A540H)
REMOVE APPLY GASKET
± AUTOMATIC TRANSAXLERemoval of Component Parts (A540E and A540H)AT±241

REMOVAL OF DIFFERENTIAL COMPONENT
PARTS
1. MEASURE DIFFERENTIAL TOTAL PRELOAD
Using a torque meter measure the total preload, and make a
note of it.
(b) Using a large screwdriver, remove the LH bear-
ing retainer.
NOTICE: Wrap the screwdriver in a rag, etc. to avoid
damage to the case and retainer.
(b) Using a large screwdriver, remove the RH re-
tainer.
NOTICE: Wrap the screwdriver in a rag, etc. to avoid
damage to the case and retainer.
2. REMOVE LH BEARING RETAINER
(a) Remove the six bolts.
3. (A540E)
REMOVE RH RETAINER
(a) Remove the six bolts.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A540E and A540H)AT±256

5. REMOVE DIFFERENTIAL CASE
(a) (A540E)
Remove the differential case, outer race and shim from
the transaxle case.(b) Tap the carrier cover with a plastic hammer to re-
move it. 4. REMOVE CARRIER COVER
(a) Remove the eleven bolts.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A540E and A540H)AT±257

7. MEASURE DRIVE PINION PRELOAD
Using a torque meter, measure the drive pinion pre-
load.
Preload (at starting) : Reused bearing
5 ± 8 kg±cm (4.3 ± 6.9 in.±lb, 0.5 ± 0.8 N±m)
The total preload measured in step 1 minus the drivE
pinion preload equals 1.3 ± 2.0 kg±cm (1.1 ± 1.7 in.±lb
0.1 ± 0.2 N±m). If the result is not within this specifica-
tion the side bearing preload is bad.(b) Using pliers, pull out the drive pinion cap.
(c) Remove the O±rings from the cap. 6. REMOVE DRIVE PINION CAP
(a) Remove the bolt.(a) (540H)
Remove the differential assembly.
(b) Remove the two apply gaskets.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A540E and A540H)AT±258

Differential Assembly (A540E)
± AUTOMATIC TRANSAXLEComponent Parts (Differential Assembly A540E).AT±322