wiring TOYOTA CAMRY V20 1986 Service Information

IN0036
Seal Lock Adhesive
GENERAL REPAIR INSTRUCTIONS
1. Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.
2. During disassembly, keep parts in order to facilitate
reassembly.
3. Observe the following:
(a) Before performing electrical work, disconnect the
negative cable four the battery terminal.
(b) If it is necessary to disconnect the battery for in-
spection or repair, always disconnect the cable from
the negative (-) terminal which is grounded to the
vehicle body.
(c) To prevent damage to the battery terminal post,
loosen the terminal nut and raise the cable straight
up without twisting it or prying it.
(d) Clean the battery terminal posts and cable termi-
nals with a shop rag. Do not scrape them with a file
or other abrasive object.
(e) Install the cable terminal to the battery post with the
nut loose, and tighten the nut after installation. Do
not use a hammer or such to tap the terminal onto
the post.
(f) Be sure the cover for the positive (+) terminals are
properly in place.
4. Check hoses and wiring connectors to make sure
that they are secure and correct.
5. Non-reusable parts
(a) Always replace cotter pins, gaskets, O-rings and oil
seals etc. with new ones.
(b) Non-reusable parts are indicated in the component
illustrations by the ºrº symbol.
6. Precoated parts
Precoated parts are the bolts and nuts, which have
been coated with a seal lock adhesive at the factory.
(a) If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated
with the specified adhesive.
(b) Recoating of precoated parts
(1) Clean off the old adhesive from the bolt, nut
or installation part threads.
(2) Dry with compressed air.
(3) Apply the specified seal lock adhesive to the
bolt or nut threads.
(c) Precoated parts are indicated in the component il-
lustrations by the º
º symbol.
IN-4- INTRODUCTIONGeneral Repair Instructions

Blower does not, operate
(a) GAUGE fuse blown
(b) FL blown
(c) Circuit breaker faulty
(d) HEATER relay faulty
(e) HEATER fuse blown
(f) Blower motor faulty
(g) Blower resistor faulty
(h) Blower switch faulty
(i) Wiring or ground faulty
Magnetic clutch does not engage
(a) FL (30A CDS) blown
(b) Magnetic clutch relay faulty
(c) Magnetic clutch faulty
(d) A/C fuse faulty
(e) A/C switch faulty
(f) Thermistor faulty
(g) A/C amplifier faulty
(h) Revolution detecting sensor faulty
(i) Pressure switch faulty
(j) Wiring or ground faulty
(k) Refrigerant empty
Compressor does not rotate properly
(a) Drive belt loose or broken
(b) Compressor faulty
Expansion valve faulty
Leak i n systemReplace FL and check for short
Check relay
Check magnetic clutch
Replace fuse and check for short
Check switch
Check thermistor
Check amplifier
Check sensor
Check switch
Repair as necessary
Check refrigerant pressure Replace fuse and check for short
Replace FL and check for short
Check circuit breaker
Check relay .
Replace fuse and check for short
Check blower motor
Check blower resistor
Check blower switch
Repair as necessary
Magnetic clutch slipping
Expansion valve faulty
Excessive moisture in the system
Revolution detecting sensor faulty
A/C amplifier faulty
Wiring connection faulty
Condenser clogged
Drive belt slipping
Compressor faulty
Insufficient or too much refrigerant
Air i n systemCheck magnetic clutch
Check expansion valve
Evacuate and charge system
Check sensor
Check amplifier
Repair as necessary
Check condenser
Check or replace drive belt
Check compressor
Check refrigerant volume
Evacuate and charge systemAC±4 to 11
AC±37
AC±23
AC±4 to 11
AC±44
AC±43
AC±45 to 47
AC±24
AC±36
AC±4 to 11
AC±18, 22
Ajust or replace drive belt
Check compressor
Check expansion valve
Test system for leaks
TROUBLESHOOTING
AC±4 to 11
AC±4 to 11
AC±4 to 11
BE±73
AC±4 to 11
Cool air comes out
only at high speedAC±24
AC±45 to 47
AC±4 to 11 Coo! air comes
out intermittently
BE±73
BE±72, 74
AC±4 to 11
AC±33
AC±21
AC±23
AC±22 AC±21
AC±23
AC±39
AC±42
* FL: Fusible LinkPossible cause
AC±23
AC±39 No coolingRemedy Problem
Page
± AIR CONDITIONING SYSTEMTroubleshootingAC±16

INSTALLATION OF COMPRESSOR
(See page AC±25)
1. INSTALL COMPRESSOR WITH FOUR MOUNTING
BOLTS
Torque:
3S±FE engine 280 kg±cm (20 ft±lb, 27 N±m)
2VZ±FE engine 250 kg±cm (18 ft±lb, 25 N±m)
2. INS TALL DRIV E BE LT(S e e ste ps 2 and 3 on pa ge
AC±21)
3. CONNECT TWO HOSES TO COMPRESSOR SERVICE
VALVES
Torque:
Discharge line 250 kg±cm (18 ft±lb, 25 N±m)
Suction line 250 kg±cm (18 ft±lb, 25 N±m)
4. CONNECT CLUTCH LEAD WIRE TO WIRING
HARNESS
5. (2VZ±FE ENGINE MODEL)
PLACE CONDENSER FAN, RADIATOR FAN AND
IGNITOR BRAKET
6. INSTALL BATTERY AND CONNECT NEGATIVE CABLE
TO BATTERY
7. EVACUATE AIR FROM AIR CONDITIONING SYSTEM
8. CHARGE AIR CONDITIONING SYSTEM WITH
REFRIGERANT AND CHECK FOR GAS LEAKAGE
Specified amount: 600 ± 750 g (1.3 ± 1.7 lb)
± AIR CONDITIONING SYSTEMCompressorAC±31

TROUBLESHOOTING FLOW±CHART
HINT:
wIf diagnostic code Nos. 42, 61, 62 or 63 are output, the overdrive OFF indicator light will begin to
blink immediately to warn the driver. However, an impact or shock may cause the blinking to stop;
but the code will still be retained in the ECT ECU memory until canceled out.
wThere is no warning for diagnostic code No. 64.
wIn the event of a simultaneous malfunction of both No. 1 and No. 2 speed sensors, no diagnostic
code will appear and the fail±safe system will not function. However, when driving in the D range,
the transaxle will not up±shift from first gear, regardless of the vehicle speed.
1. Diagnostic code 42 (No. 1 speed sensor circuitry)
Check continuity between ECT ECU
connector SP, terminal and body ground.
(See page AT±32)
Check continuity between ECT ECU
connector SP2 terminal and body ground.
(See page AT±33)
Check wiring between ECT ECU and No. 2
speed sensor.Check wiring between ECT ECU and
combination meter.
2. Diagnostic code 61 (No. 2 speed sensor circuitry
Repair or replace No. 1 speed
sensor.
Check No. 2 speed sensor.
(See page AT±35)Repair or replace No. 2
speed sensor. Substitute another ECT ECU.
Substitute another ECT ECU.Check No. 1 speed sensor.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A140E)AT±19

5. Diagnostic code 64 (Lock±up solenoid valve circuitry)
Check resistance of lock±up solenoid valve at NG 4. Diagnostic code 63 (No. 2 solenoid valve circuitry)
Check resistance of No. 2 solenoid valve at NG 3. Diagnostic code 62 (No. 1 solenoid valve circuitry)
Check resistance of No. 1 solenoid valve at NG
Remove the oil pan and check resistance of
No. 1 solenoid valve connector and body ground.
Resistance: 11 ± 15

Remove the oil pan and check resistance of lock±
up solenoid valve connector and body ground.
Resistance: 11 ± 15
Remove the oil pan and check resistance of
No. 2 solenoid valve connector and body ground.
Resistance: 11 ± 15
Check resistance of No. 2 solenoid valve at
ECT ECU connector. (See page AT±33)
Check resistance of lock±up solenoid valve at
ECT ECU connector. (See page AT±33) Check resistance of No. 1 solenoid valve at
ECT ECU connector. (See page AT±33)
Check wiring between lock±up solenoid valve and
ECT ECU. Check wiring between No. 2 solenoid valve and.
ECT ECU. Check wiring between No. 1 solenoid valve and
ECT ECU.Replace No. 1 and No. 2 solenoid
valves.
Replace No. 1 and No. 2 solenoid
valve.
Substitute another ECT computer.
Replace lock±up solenoid valve. Substitute another ECT ECU.
Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A140E)AT±20

18. REMOVE ACCUMULATOR PISTON AND SPRINGS
(a) Loosen the five bolts one turn at a time until the spring
tension is released.
(b) Remove the cover and gasket. 17. REMOVE SECOND BRAKE APPLY GASKET AND
GOVERNOR OIL STRAINER
HINT: Governor oil strainer...A140L only(e) Disconnect the throttle cable from the cam and
remove the valve body.
16. REMOVE THROTTLE CABLE AND SOLENOID WIRING
FROM CASE(b) (A140L)
Remove the fourteen bolts.
± AUTOMATIC TRANSAXLERemoval of Component Parts (A140L and A140E)AT±63

42. (A140E)
INSTALL SOLENOID WIRING
(A 140 L)
INSTALL KICK±DOWN SWITCH WIRING
Push the solenoid wiring through the case, being careful
not to damage the O±ring. Check for full seating.
44. INSTALL BOLTS IN VALVE BODY
HINT: Each bolt length (mm (in.)) is indicated in the figure.
Hand tighten the twelve bolts A140E) of fourteen bolts
(A140L) first, then torque with a torque wrench.
Torque: 100 kg±cm (7 ft±Ib, 10 N±m)
43. PLACE VALVE BODY ON TRANSMISSION
(a) While holding the cam down with your hand, slip
the cable end into the slot.
(b) Lower the valve body into place.
NOTICE: Do not entangle the kick±down switch wire or so-
lenoid wire.
5. (A140E)
CONNECT SOLENOID WIRING
(a) Connect the No. 1 solenoid connector. (white and
shorter wire)
(b) Connect the No. 2 solenoid connector. (black and
longer wire)
± AUTOMATIC TRANSAXLEInstallation of Component Parts (A140L and A140E)AT±178

47. INSTALL MANUAL VALVE BODY AND DETENT
SPRING
HINT: Each bolt length (mm (in.)) is indicated in the figure.
(a) Align the manual valve with the pin on the manual shaft
lever.
(b) Lower the manual valve body into place.
(c) Hand tighten the four bolts first. Then, tighten them with
a torque wrench.
Torque: 100 kg±cm (7 ft±Ib, 10 N±m)
(d) Place the detent spring on the manual valve body and
hand tighten the two bolts first.
Then, tighten them with a torque wrench.
Torque: 100 kg±cm (7 ft±Ib, 10 N±m)
(e) Check that the manual valve lever is touching the center
of the detent spring tip roller.
48. INSTALL OIL TUBES
Using a plastic hammer, install the tubes into the posi-
tions indicated in the figure.
NOTICE: Be careful not to bend or damage the tubes.
46. (A140L)
CONNECT KICK±DOWN SWITCH WIRING
Connect the kick±down switch connector and clamp it
onto the bracket.
49. INSTALL TUBE BRACKET
Each bolt length (mm (in) is indicated in the figure.
Torque: 100 kg±cm (7 ft±Ib, 10 N±m)
± AUTOMATIC TRANSAXLEInstallation of Component Parts (A140L and A140E)AT±179

60. INSTALL NEUTRAL START SWITCH
(a) Install the neutral start switch to the manual valve shaft.
(b) Install the seal gasket and locking plate.
(c) Tighten the nut and stake it with the locking plate.
Torque: 70 kg±cm (61 in.±Ib. 6.9 N±m)
56. (A140E)
INSTALL SOLENOID WIRING RETAINING PLATE
57. INSTALL THROTTLE CABLE RETAINING PLATE
58. INSTALL FILLER TUBE AND DIPSTICK
59. INSTALL SOLENOID
(a) Coat the O±rings with ATF and push the tip of solenoid
into the hole.
(b) Tighten the two bolts evenly and gradually.
61. ADJUST NEUTRAL START SWITCH
(a) Align the groove and return neutral basic line. 55. INSTALL COVER BRACKET
± AUTOMATIC TRANSAXLEInstallation of Component Parts (A140L and A140E)AT±181

TROUBLESHOOTING FLOW±CHART (A540E)
HINT:
wIf diagnostic code Nos. 42, 61, 62 or 63 are output, the overdrive OFF indicator light will begin to
blink immediately to warn the driver. However, an impact or shock may cause the blinking to stop;
but the code will still be retained in the Engine and ECT ECU memory until canceled out.
wThere is no warning for diagnostic code No. 64.
wIn the event of a simultaneous malfunction of both No. 1 and No. 2 speed sensors, no diagnostic
code will appear and the fail±safe system will not function. However, when driving in the D range,
the transaxle will not up±shift from first gear, regardless of the vehicle speed.
Check continuity between Engine and ECT
ECU connector SP, terminal and body ground.
(See page AT±216)
Check continuity between Engine and ECT
ECU connector SP2 terminal and body ground.
(See page AT±216)
1. Diagnostic code 42 (No. 1 speed sensor circuitry)
Check wiring between Engine and ECT ECU
and No. 2 speed sensor. Check wiring between Engine and ECT ECU
and combination meter.
2. Diagnostic code 61 (No. 2 speed sensor circuitry)
Check No. 2 speed sensor.
(See page AT±234) Substitute another Engine and ECT ECU.
Substitute another Engine and ECT ECU.Repair or replace No. 1 speed sensor.
Repair or replace No. 2
speed sensor. Check No. 1 speed sensor.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±194