1986 TOYOTA CAMRY V20 ac relay

Valve body
spring
SpringFree length
mm (in.)Coil outer
diameter
mm (in.)Total
No. of
coilsColor
(Upper valve body)
Second coast modulator valve
B
1 orifice control valve
Down-shift plug
Throttle valve
Throttle modulator valve
Cut-back valve
No. 1 accumulator control valve
Lock-up relay valve27.5 (1.083)
24.8 (0.976)
29.8 (1.173)
30.7 (1.209)
21.7 (0.854)
21.8 (0.858)
28.1 (1.106)
26.6 (1.047)8.9 (0.350)
8.0 (0.315)
8.7 (0.343)
9.2 (0.362)
9.5 (0.374)
6.0 (0.236)
10.6 (0.417)
10.2 (0.402)14.6
12.0
13.5
9.5
9.5
13.5
13.0
11.5Brown
White
Yellow
Purple
Orange
Red
Yellow
Green
(Lower valve body)
Pressure relief valve
Check valve
Secondary regulator valve
No. 2 accumulator control valve
Second lock valve
3 - 4 shift valve
Low coast modulator valve
1 - 2 shift valve
2 - 3 shift valve
Primary regulator valve11.2 (0.441)
19.9 (0.783)
38.5 (1.516)
23.0 (0.906)
20.7 (0.815)
29.2 (1.150)
20.2 (0.795)
29.2 (1.150)
28.0 (1.102)
64.2 (2.528)6.4 (0.252)
11.0 (0.433)
8.4 (0.331)
6.3 (0.248)
6.1 (0.240)
8.9 (0.350)
7.9 (0.311)
8.9 (0.350)
9.4 (0.370)
18.6 (0.732)7.5
8.5
17.0
12.0
12.0
12.0
11.9
12.0
10.3
12.5None
None
Purple
Gray
Orange
Light green
Purple
Light green
None
None
Valve body
retainerRetainerHeight
mm (in.)Width
mm (in.)Thickness
mm (in.)
(Upper valve body)
Lock-up relay valve
Throttle modulator valve
Second coast modulator valve
Cut-back valve
No. 1 accumulator control valve
B
1 orifice control valve6.5 (0.256)
6.5 (0.256)
6.5 (0.256)
9.2 (0.362)
6.5 (0.256)
11.5 (0.453)5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
(Lower valve body)
Primary regulator valve
Secondary regulator valve
No. 2 accumulator control valve
Second lock valve
Low coast modulator valve
1 - 2 shift valve
2 - 3 shift valve
3 - 4 shift valve9.2 (0.362)
15.0 (0.591)
9.2 (0.362)
11.5 (0.453)
11.5 (0.453)
6.5 (0.256)
9.2 (0.362)
6.5 (0.256)5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)
5.0 (0.197)3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
3.2 (0.126)
Specifications (Cont'd)
- SERVICE SPECIFICATIONSAutomatic Transaxle Transfer (A540E A540H)A-3

AT3465
AT3467
AT3468
Plate GasketOil Strainer
AT3469AT3464
Check Ball B
0 Accumulator
2. REMOVE B0 ACCUMULATOR ASSEMBLY
(a) Remove the three bolts.
(b) Remove the B
0 accumulator assembly.
(c) Remove the check ball on No. 1 plate.
3. DISASSEMBLE B
0 ACCUMULATOR ASSEMBLY
(a) Applying compressed air to the cylinder hole,
remove the piston and spring.
(b) Remove the two O-ring from the piston.
4. REMOVE UPPER VALVE BODY COVER
Remove the eleven bolts and upper valve body cover.
5. REMOVE OIL STRAINER, UPPER VALVE BODY
COVER GASKETS AND PLATE
(a) Remove the oil strainer on the gasket.
(b) Remove the two gaskets and plate from the upper
valve body.
6. REMOVE LOCK-UP RELAY VALVE SLEEVE STOPPER
AT-86- AUTOMATIC TRANSAXLEComponent Parts (Valve Body)

AT3476
AT3477Lock-up Relay Valve PlugLock-up Relay
Control Valve RetainerRetainerSleeve Plug RetainerNo. 1 Accumulator
Control Valve PlugCut-back Valve
PlugRetainer Modulator Valve ThrottleSleeve PinDown-shift PlugValve Vibrating Stopper Oil Strainer RetainerThrottle ValvePlate Washer
Wave Washer B
1 orifice
Control Valve PlugCheck Ball PlugSpring Retainer 2nd Coast
Modulator Valve
The throttle pressure is changed
according to the number of adjusting
rings.
When assembling the valve body,
install the same number of adjusting
rings as were removed.
Adjusting Ring
Pin
Cam
(Upper Valve Body)
COMPONENTS
- AUTOMATIC TRANSAXLEComponent Parts (Valve Body)AT-89

AT3603
SpringFree length mm (in.)Coil outer diameter
mm (in.)Total No. of coils
Color
Second coast modulator valve 27.5 (1.083)
8.9 (0.350)
14.6 Brown
B
1 orifice control valve24.8 (0.976)
8.0 (0.315)
12.0
White
Down-shift plug29.8 (1.173)
8.7 (0.343)
13.5
Yellow
Throttle valve 30.7 (1.209) 9.2 (0.362)
9.5 Purple
Throttle modulator valve 21.7 (0.854)
9.5 (0.374)
9.5
Orange
Cut-back valve21.8 (0.858)
6.0 (0.236)
13.5
Red
No. 1 accumulator control valve 28.1 (1.106)
10.6 (0.417)
13.0
Yellow
Lock-up relay valve26.6 (1.047)
10.2 (0.402)
11.5 Green
SPECIFICATIONS OF VALVE BODY SPRINGS
HINT: During reassembly please refer to the spring specifications above to help discriminate the different
springs.
SECTIONAL VIEW OF VALVE BODY
AT-90- AUTOMATIC TRANSAXLEComponent Parts (Valve Body)

11.5
(0.453)5.0
(0.197)3.2
(0.126) B1 orifice control valve6.5
(0.256)5.0
(0.197)3.2
(0.126) No. 1 accumulator control valve9.2
(0.362)5.0
(0.197)3.2
(0.126) Cut-back valve5.0
(0.197)3.2
(0.126) 6.5
(0.256) Second coast modulator valve6.5
(0.256)5.0
(0.197)3.2
(0.126) Throttle modulator valve6.5
(0.256)5.0
(0.197)3.2
(0.126) Lock-up relay valveRetainerHeightWidthThickness
mm (in.)
AT3478 AT3479
Pin Valve
Vibrating
Stopper (Upper Side)
(Lower Side)
AT3480AT3481
LOCATION OF RETAINERS, PIN, STOPPER, CHECK BALL AND STRAINER
1. RETAINER, STOPPER AND PIN
3. STRAINER
2. CHECK BALL
- AUTOMATIC TRANSAXLEComponent Parts (Valve Body)AT-91

AT3469
AT3468
AT3472AT3473
4. INSTALL LOCK-UP RELAY VALVE SLEEVE STOPPER
5. INSTALL UPPER VALVE BODY COVER GASKETS,
PLATE AND THROTTLE MODULATOR OIL STRAINER
(a) Position a new gasket and plate and then another
new gasket
HINT: Both gaskets are same one.
(b) Install the oil strainer onto the gasket.
6. INSTALL UPPER VALVE BODY COVER
(a) Position the upper valve body cover.
(b) Install and finger tighten the eleven bolts.
HINT: Each bolt length (mm, in.) is indicated in the figure.
AT3467
7. INSTALL AND FINGER TIGHTEN BOLT IN LOWER
VALVE BODY
HINT: Bolt length (mm, in.) is indicated in the figure.
8. INSTALL CHECK BALLS
Install the two check balls into the lower valve body.
Oil Strainer
Gasket
Plate
Gasket
AT-96- AUTOMATIC TRANSAXLEComponent Parts (Valve Body)

Ignition Switch ºONº
Blower Switch º'ONº " Heater Relay ªONº (Blower Motor ºRUNº)
A/C Switch ºONº " A/C Amplifier º'ONº (A/C Amp. Main Power Supply) 1. PRINCIPLE OF A/C ELECTRICAL CIRCUIT
2. HOW IS MAGNETIC CLUTCH ENERGIZED?
The general process until the magnetic clutch is energized is shown below.
Dual Pressure Switch º'ONº:
Refrigerant Condition (2.1 kg/cm2 (30 psi, 206 kPa) less than 27 kg/cm
2 (384 psi, 2,648 kPa))
Thermistor supplies temperature signal of evaporator to A/C amplifier.
VSV ºONº " E/G Idle±Up
Magnetic Clutch Relay º'ONº
Temperature Sensor ºONº:
Temperature of Temperature Sensor is less than 180
°C (356°F).
Magnetic Clutch ºONº
Revolution Detecting Sensor supplies RPM signal of compressor to A/C amplifier.
If compressor is not locked, magnetic clutch is continuously energized.
± AIR CONDITIONING SYSTEMGeneral DescriptionAC±14

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