1986 TOYOTA CAMRY V20 wiring

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

Remove the oil pan and check resistance of
No. t solenoid valve connector and body ground.
Resistance: 11 ± 1 S
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 lock±up solenoid valve at
Engine and ECT ECU connector.
(See page AT±216) Check resistance of No. 2 solenoid valve at
Engine and ECT ECU connector.
(See page AT±216) Check resistance of No. 1 solenoid valve at
Engine and ECT ECU connector
(See page AT±216)
Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.
Check wiring between lock±up solenoid valve and
Engine and ECT ECU.Check wiring between No. 2 solenoid valve and
Engine and ECT ECU.Check wiring between No. 1 solenoid valve and
Engine and ECT ECU.
5. Diagnostic code 64 (Lock±up solenoid valve circuitry)3. Diagnostic code 62 (No. 1 solenoid valve circuitry)
4. Diagnostic code 63 (No. 2 solenoid valve circuitry)
Substitute another Engine and ECT ECU.
Substitute another Engine and ECT ECU.Substitute another Engine and ECT ECU.
Replace lock±up solenoid valve.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±195

TROUBLESHOOTING FLOW±CHART (A540H)
HINT:
wIf diagnostic code Nos. 44, 61, 62, 63, 73 or 74 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 vehicle and rear 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 44 (Rear speed sensor circuitry)
Check continuity between ECT ECU NC
Check continuity between ECT ECU
connector RR+ terminal and RR± terminal.
(See page AT±217)
Check continuity between ECT ECU
connector FR+ terminal and FR± terminal.
(See page AT±217)
Check wiring between ECT ECU and vehicle
speed sensor. Check wiring between ECT ECU and rear
wheel speed sensor.
2. Diagnostic code 61 (Vehicle speed sensor circuitry)Repair or replace rear wheel speed
sensor. Check rear wheel speed sensor.
(See page AT±221)
Check vehicle speed sensor.
(See page AT±221)Repair or replace vehicle
speed sensor. Substitute another ECT ECU. Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±196

Remove the oil pan and check resistance of lock±
up solenoid valve connector and body ground.
Resistance: 11 ± 15 W Remove the oil pan and check resistance of
No. 2 solenoid valve connector and body ground.
Resistance: 11 ± 15 W Remove the oil pan and check resistance of
No. 1 solenoid valve connector and body ground.
Resistance: 11 ± 15
5. Diagnostic code 64 (Lock±up solenoid valve circuitry)4. Diagnostic code 63 (No. 2 solenoid valve circuitry)3. Diagnostic code 62 (No. 1 solenoid valve circuitry)
Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid
valves make a set
Check resistance of lock±up solenoid valve at
ECT ECU connector. (See page AT±219) Check resistance of No. 1 solenoid valve at
ECT ECU connector. (See page AT±219)
Check resistance of No. 2 solenoid valve at
ECT ECU connector. (See page AT±219)
Check wiring between lock±up solenoid valve and
ECT ECU.Check wiring between No. 1 solenoid valve and
ECT ECU.
Check wiring between No. 2 solenoid valve and
ECT ECU.
Replace lock±up solenoid valve. Substitute another ECT ECU.
Substitute another ECT ECU.
Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±197

6. Diagnostic code 73 (No. 1 center differential control solenoid valve circuitly)
Replace No. 1 and No. 2 center differ-
ential control solenoid valves.
HINT: No. 1 and No. 2 center differen-
tial control solenoid valves make a
set. Check resistance of No. 2 center differential con-
trol solenoid valve connector and body ground.
Resistance: 11 ± 15 Check resistance of No. 1 center differential control
solenoid valve connector and body ground.
Resistance: 11 ± 15 WReplace No. 1 and No. 2 center differ-
ential control solenoid valves.
HINT: No. 1 and No. 2 center differen-
tial control solenoid valves make a
set.
Check resistance of No. 2 center differential control
solenoid valve at ECT ECU connector.
(See page AT±219) Check resistance of No. 1 center differential control
solenoid valve at ECT ECU connector.
(See page AT±219)
7. Diagnostic code 74 (No. 2 center differential control solenoid valve circuitly)
Check wiring between No. 2 center differential con-
trol solenoid valve and ECT ECU. Check wiring between No. 1 center differential con-
trol solenoid valve and ECT ECU. Substitute another ECT ECU.
Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±198

GENERAL INFORMATION
WIRING COLOR CODE
Wire colors are indicated by an alphabetical code.
B =Black L =Blue R =Red
BR=Brown LG=Light Green V =Violet
G =Green O =Orange W=White
GR=Gray P =Pink Y =Yellow
The first letter indicates the basic wire color and the sec±
ond letter indicates the color of the stripe.
CONNECTOR
1. PIN NUMBER OF FEMALE CONNECTOR
Numbered in order from upper left to lower right.
2. PIN NUMBER OF MALE CONNECTOR
Numbered in order from upper right to lower left.
3. DISTINCTION OF MALE AND FEMALE CONNECTORS
Male and female connectors are distinguished by shape
of their internal pins.
(a) All connectors are shown from the open end, and the
lock is on top.
(b) To pull apart the connectors, pull on the connector it-
self, not the wires.
HINT: Check the type of connector before disconnecting.
± BODY ELECTRICAL SYSTEMGeneral informationBE±2

Fusible link blown
Headlight control relay faulty
Light control/dimmer switch faulty
Daytime running light relay faulty
(CANADA)
Headlight dimmer relay faulty
(CANADA)
Wiring or ground faulty
Replace fuse and check for short
Replace fusible fink
Check relay
Check switch
Check relay
Repair as necessary TAIL fuse blown
Fusible link blown
Taillight control relay faulty
Light control switch faulty
Daytime running light relay faulty
(CANADA)
Wiring or ground faulty Light control/dimmer switch faulty
Daytime running light relay faulty
(CANADA)
Headlight dimmer relay faulty
(CANADA)
Wiring or ground faultyReplace fusible link
Check relay
Check switch
Check relay
Check relay
Repair as necessary
Replace fuse and check for short
Check flasher
Check switch
Repair as necessary
Replace fuse and check short
Check flasher
Check switch
Repair as necessary HAZ±HORN fuse blown
Turn signal flasher faulty
Hazard warning switch faulty
Wiring or ground faultyCheck switch
Check relay
Check relay
Repair as necessary
Replace fuse and check for short
Adjust or replace switch
Repair as necessary
TURN fuse blown
Turn signal flasher faulty
Turn signal switch faulty
Wiring or ground faulty
LIGHTING
Troubleshooting
STOP fuse blown
Stop light swtich faulty
Wiring or ground faulty Light bulb burned out
Socket, wire or ground faulty
High beam headlights or
headlight flashers do not
operate
Light control rheostat faulty
Wiring or ground faulty Instrument lights do not
light (taillights light)Tail, parking and
license light do not
light
Turn signal switch faulty
Wiring or ground faulty
Hazard warning lights do
not operateReplace bulb
Repair as necessary
Headlights do not light
Check switch
Repair as necessaryCheck rheostat
Repair as necessary Only one light comes
ON
Turn signal does not
flash on one side
Turn signals do not
operateBE±3
BE±3
BE±18
BE±15
BE±25
Adjust or replace switch
Stop light switch faultyBE±3
BE±18
BE±15
BE±25
Stop lights do not light
Stop lights stay on
BE±3
BE±19
BE±19BE±3
BE±19
BE±15
Possible cause
BE±15
BE±25
BE±3
BE±89
RemedyProblem
BE±15BE±23 BE±89BE±25
BE±25Page
± BODY ELECTRICAL SYSTEMLightingBE±14