1994 TOYOTA CAMRY ignition

207
VTA±E2:0.3±0.8 VOLTS WITH THROTTLE VALVE FULLY CLOSED
3.2±4.9 VOLTS WITH THROTTLE VALVE FULLY OPENED
VC± E2:4.5±5.5 VOLTS WITH IGNITION SW AT ON POSITION
OD2± E1:9.0±14.0 VOLTS WITH O/D MAIN SW TURNED ON
0±3.0 VOLTS WITH O/D MAIN SW TURNED OFF
IGSW± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
+B± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
+B1± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
M±REL± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
E 2(A), E 3(B)
ELECTRONIC CONTROLLED TRANSMISSION SOLENOID(A)1, (A)3, (B)1±GROUND : EACH 11±15 W
O 5
O/D MAIN SW1±3 : CLOSED WITH O/D MAIN SW OFF, OPEN WITH O/D MAIN SW ON
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 832E 632N 2A33
C1132E 7C32N 3B33
D 130E 8B32O 533
D 332E10A32P 131
E 2A30J 133S1033
E 3B30J 233T 131
E 430J 333V 531
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A
1D20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1K20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M
2B22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2C22ENGINE WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2D22ENGINE WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3B
3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II142COWL WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IN142INSTRUMENT PANEL WIRE AND SWITCH WIRE
IP144ENGINE WIRE AND COWL WIREIP344ENGINE WIRE AND COWL WIRE
IQ144ENGINE WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB40 (5S±FE)FRONT LEFT FENDER
EC40 (5S±FE)INTAKE MANIFOLD RH
ED40 (5S±FE)INTAKE MANIFOLD LH
IF42LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E1740 (5S FE)ENGINE WIREI1344COWL WIRE
E1840 (5S±FE)ENGINE WIREI1844ENGINE WIRE
I 144COWL WIREI2344COWL WIRE
I 644INSTRUMENT PANEL WIRE
SERVICE HINTS

212
ABS (ANTI±LOCK BRAKE SYSTEM) (TMC MADE)
THIS SYSTEM CONTROLS THE RESPECTIVE BRAKE FLUID PRESSURES ACTING ON THE DISC BRAKE CYLINDERS OF THE RIGHT
FRONT WHEEL, LEFT FRONT WHEEL AND REAR WHEELS WHEN THE BRAKES ARE APPLIED IN A PANIC STOP SO THAT THE
WHEELS DO NOT LOCK. THIS RESULTS IN IMPROVED DIRECTIONAL STABILITY AND STEERABILITY DURING PANIC BRAKEING.
1. INPUT SIGNALS
(1) SPEED SENSOR SIGNAL
THE SPEED OF THE WHEELS IS DETECTED AND INPUT TO TERMINALS FL+, FR+, RL+ AND RR+ OF THE ABS ECU.
(2) STOP LIGHT SW SIGNAL
A SIGNAL IS INPUT TO TERMINAL STP OF THE ABS ECU WHEN BRAKE PEDAL IS OPERATED.
(3) PARKING BRAKE SW SIGNAL
A SIGNAL IS INPUT TO TERMINAL PKB OF THE ABS ECU WHEN THE PARKING BRAKE IS OPERATED.
2. SYSTEM OPERATION
DURING SUDDEN BRAKEING THE ABS ECU, WHICH HAS SIGNALS INPUT FROM EACH SENSOR, CONTROLS THE CURRENT
FLOWING TO THE SOLENOID INSIDE THE ACTUATOR AND LETS THE HYDRAULIC PRESSURE ACTING ON EACH WHEEL CYLINDER
ESCAPE TO THE RESERVOIR. THE PUMP INSIDE THE ACTUATOR IS ALSO OPERATING AT THIS TIME AND IT RETURNS THE BRAKE
FLUID FROM THE RESERVOIR TO THE MASTER CYLINDER, THUS PREVENTING LOCKING OF THE VEHICLE WHEELS.
IF THE ECU JUDGES THAT THE HYDRAULIC PRESSURE ACTING ON THE WHEEL CYLINDER IS INSUFFICIENT, THE CURRENT
ACTING ON THE SOLENOID IS CONTROLLED AND THE HYDRAULIC PRESSURE IS INCREASED. HOLDING OF THE HYDRAULIC
PRESSURE IS ALSO CONTROLLED BY THE ECU, BY THE SAME METHOD AS ABOVE. BY REPEATED PRESSURE REDUCTION,
HOLDING AND INCREASE ARE REPLATED TO MAINTAIN VEHICLE STABILITY AND TO IMPROVE STEERBILITY DURING SUDDEN
BRAKING.
A 4(A), A 5(B) ABS ACTUATOR
(A)1, (A)3, (A)4, (A)6 ± (A)2 : APPROX. 6 W
(A)2±GROUND : APPROX. 5 W
A 6(B), A 7(A) ABS RELAY
(A)1±(B) 3 : 60 W±100 W
(A)4±(B) 3 : 60 W±100 W
(A)1, (B) 2±GROUND : APPROX. 12 VOLTS
(A)6±GROUND : APPROX. 12 VOLTS
A 8, A 9 ABS SPEED SENSOR FRONT LH, RH
1±2 : 0.8 K±1.3 KW
A19, A20 ABS SPEED SENSOR REAR LH, RH
1±2 : 1.1 K±1.5 KW
A13(A), A14(B) ABS ECU
(CONNECT THE ECU CONNECTORS)
(A) 5±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(B)15±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(A) 1±GROUND, (A) 13±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND ABS WARNING LIGHT GOES OFF
(A)14±GROUND, (A) 1±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND ABS WARNING LIGHT GOES OFF
(A)26±GROUND, (A) 18±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND ABS WARNING LIGHT GOES OFF
(A) 2±GROUND : ALWAYS CONTINUITY
(A)15±GROUND : ALWAYS CONTINUITY
(A)12±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(B) 6±GROUND : APPROX. 12 VOLTS WITH BRAKE PEDAL DEPRESSED
(A)25±GROUND : ALWAYS APPROX. 12 VOLTS
SYSTEM OUTLINE
SERVICE HINTS

218
ABS (ANTI±LOCK BRAKE SYSTEM) (TMM MADE)
THIS SYSTEM CONTROLS THE RESPECTIVE BRAKE FLUID PRESSURES ACTING ON THE DISC BRAKE CYLINDERS OF THE RIGHT
FRONT WHEEL, LEFT FRONT WHEEL AND REAR WHEELS WHEN THE BRAKES ARE APPLIED IN A PANIC STOP SO THAT THE
WHEELS DO NOT LOCK. THIS RESULTS IN IMPROVED DIRECTIONAL STABILITY AND STEERABILITY DURING PANIC BRAKEING.
1. INPUT SIGNALS
(1) SPEED SENSOR SIGNAL
THE SPEED OF THE WHEELS IS DETECTED AND INPUT TO TERMINALS FL+, FR+, RL+ AND RR+ OF THE ABS ECU.
(2) STOP LIGHT SW SIGNAL
A SIGNAL IS INPUT TO TERMINAL STP OF THE ABS ECU WHEN BRAKE PEDAL IS OPERATED.
2. SYSTEM OPERATION
DURING SUDDEN BRAKEING THE ABS ECU, WHICH HAS SIGNALS INPUT FROM EACH SENSOR, CONTROLS THE CURRENT
FLOWING TO THE SOLENOID INSIDE THE ACTUATOR AND LETS THE HYDRAULIC PRESSURE ACTING ON EACH WHEEL CYLINDER
ESCAPE TO THE RESERVOIR. THE PUMP INSIDE THE ACTUATOR IS ALSO OPERATING AT THIS TIME AND IT RETURNS THE BRAKE
FLUID FROM THE RESERVOIR TO THE MASTER CYLINDER, THUS PREVENTING LOCKING OF THE VEHICLE WHEELS.
IF THE ECU JUDGES THAT THE HYDRAULIC PRESSURE ACTING ON THE WHEEL CYLINDER IS INSUFFICIENT, THE CURRENT
ACTING ON THE SOLENOID IS CONTROLLED AND THE HYDRAULIC PRESSURE IS INCREASED. HOLDING OF THE HYDRAULIC
PRESSURE IS ALSO CONTROLLED BY THE ECU, BY THE SAME METHOD AS ABOVE. BY REPEATED PRESSURE REDUCTION,
HOLDING AND INCREASE ARE REPLATED TO MAINTAIN VEHICLE STABILITY AND TO IMPROVE STEERBILITY DURING SUDDEN
BRAKING.
A 8, A 9 ABS SPEED SENSOR FRONT LH, RH
1±2 : 0.8 K±1.3 KW
A19, A20 ABS SPEED SENSOR REAR LH, RH
1±2 : 1.1 K±1.5 KW
A 4(A), A 5(B) ABS ECU
(CONNECT THE ECU CONNECTORS)
(A)12±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(A)15±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND DATA LINK CONNECTOR 1 (CHECK CONNECTOR)
TS±EI NOT CONNECTED
(B) 4±GROUND : ALWAYS CONTINUITY
(B) 2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(A) 9±GROUND : APPROX. 12 VOLTS WITH BRAKE PEDAL DEPRESSED
(B) 1±GROUND : ALWAYS APPROX. 12 VOLTS
SYSTEM OUTLINE
SERVICE HINTS

221
* 2 W/O POWER SEAT *
1 W/ POWER SEAT
B 7, B 8 BUCKLE SW LH
1±2 : CLOSED WITH DRIVER'S LAP BELT IN USE
B10 BUCKLE SW RH
1±2 : CLOSED WITH PASSENGER'S LAP BELT IN USE
T 2, T 3 TENSION REDUCER SOLENOID LH, RH
2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
B 732B1032T 235
B 832D2532T 335
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
3A24COWL WIRE AND J/B NO 3 (BEHIND COMBINATION METER)3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IJ142FLOOR NO. 1 WIRE AND COWL WIRE
IS144FLOOR NO. 2 WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
46 (S/D)
BL48 (C/P)UNDER THE LEFT QUARTER PILLARBL
50 (W/G)
UNDER THE LEFT QUARTER PILLAR
12 1212
12 12 B8 B10 T2 T3D25BLACK
21
XXB7 (
*1)(
*2)
SERVICE HINTS

223
A21 AUTO ANTENNA MOTOR AND RELAY
9±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
5±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
7±GROUND : ALWAYS APPROX. 12 VOLTS
8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW ON
3±GROUND : CONTINUITY (UPPER LIMIT SW ON) UNLESS ANTENNA AT UP STOP
2±GROUND : CONTINUITY (DOWN LIMIT SW ON) UNLESS ANTENNA AT DOWN STOP
4±3 : CLOSED WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW ON AND PLAYER SW OFF UNTIL ANTENNA AT
UPPERMOST POSITION
1±2 : CLOSED WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW OFF AND PLAYER SW OFF UNTIL ANTENNA AT
LOWERMOST POSITION
1±2: CLOSED WITH IGNITION SW OFF UNTIL ANTENNA AT LOWERMOST POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A2134 (S/D), 35 (C/P)R 233S 833
J 333R 333
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C
1K20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1L
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IU144FLOOR NO. 2 WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
BM46 (S/D)UNDER THE LEFT QUARTER PILLARBM48 (C/P)UNDER THE LEFT QUARTER PILLAR
12
34 56B B A A
AABBBB
3
8X3
89
X
X9 A21 J 3 R 2 R 3
S8BLUE
1
(
HINT : SEE PAGE 7)
SERVICE HINTS

225
A21 AUTO ANTENNA MOTOR AND RELAY
9±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
5±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
7±GROUND : ALWAYS APPROX. 12 VOLTS
8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW ON
3±GROUND : CONTINUITY (UPPER LIMIT SW ON) UNLESS ANTENNA AT UP STOP
2±GROUND : CONTINUITY (DOWN LIMIT SW ON) UNLESS ANTENNA AT DOWN STOP
4±3 : CLOSED WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW ON AND PLAYER SW OFF UNTIL ANTENNA
AT UPPERMOST POSITION
1±2 : CLOSED WITH IGNITION SW AT ACC OR ON POSITION AND RADIO SW OFF AND PLAYER SW OFF UNTIL ANTENNA
AT LOWERMOST POSITION
1±2 : CLOSED WITH IGNITION SW OFF UNTIL ANTENNA AT LOWERMOST POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A2136 (W/G)J 536 (W/G)R 333
J 333R 233S 833
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1L20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IG142FLOOR NO. 1 WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
46 (S/D)
BL48 (C/P)UNDER THE LEFT QUARTER PILLARBL
50 (W/G)
UNDER THE LEFT QUARTER PILLAR
12
345 6
3
8X
3
89X
X9 A21R2
R3 S8BLUECC CC
CC C C CCJ5
BB BBJ3
B B
(
HINT : SEE PAGE 7)1
(
HINT : SEE PAGE 7)
SERVICE HINTS

227
S 8(A), S 9(B) STEREO COMPONENT AMPLIFIER
(A) 7±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON OR ACC POSITION
(B) 7±GROUND : ALWAYS CONTINUITY
(B)10±GROUND : ALWAYS APPROX. 12 VOLTS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
F1028 (1MZ±FE), 30 (5S±FE)J 333S 8A33
F1134 (S/D), 35 (C/P)R 233S 9B33
F1234 (S/D), 35 (C/P)R1234 (S/D), 35 (C/P)
F1334 (S/D), 35 (C/P)R1334 (S/D), 35 (C/P)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C
1K20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1L
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IG142FLOOR NO. 1 WIRE AND INSTRUMENT PANEL WIRE
IH142FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IM142INSTRUMENT PANEL WIRE AND CONSOLE BOX WIREIM242INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE
IT244FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE
IU144FLOOR NO. 2 WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IH42INSTRUMENT PANEL BRACE RH
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I1544CONSOLE BOX WIRE
1
212B B A A
AABBBB
134 567
8 X 11 12 13 14 1521
6 4 3 X 1
7X9101112 145
1312
534
678910 AB F10, F11 F12, F13 J 3 R 2 R12, R13
S8 S9(
HINT : SEE PAGE 7)BLUE BLACK
SERVICE HINTS

229
R 3(B) RADIO AND PLAYER
(B) 3±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON OR ACC POSITION
(B) 4±GROUND : ALWAYS APPROX. 12 VOLTS
(B) 7±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
F1028 (1MZ±FE), 30 (5S±FE)R 3B33R1334 (S/D), 35 (C/P)
F1134 (S/D), 35 (C/P)R 4A33
J 333R1234 (S/D), 35 (C/P)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C
1K20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1L
20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
2G22COWL WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IG142FLOOR NO. 1 WIRE AND INSTRUMENT PANEL WIRE
IH142FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IT244FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE
IU144FLOOR NO. 2 WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IH42INSTRUMENT PANEL BRACE RH
1
2B B A A
AABBB B12 34
5678912
3X 6
21 F10, F11 J 3R12, R13 BA R3 R4BLUE BLUE
(
HINT : SEE PAGE 7) BLACK
SERVICE HINTS