1996 TOYOTA RAV4 terminals

65
2. CONTROL SYSTEM
*SFI
THE SFI SYSTEM MONITORS THE ENGINE CONDITION THROUGH THE SIGNALS, WHICH ARE INPUT FROM EACH SENSOR (INPUT
SIGNALS (1) TO (11)). THE BEST FUEL INJECTION VOLUME IS DECIDED BASED ON THIS DATA AND THE PROGRAM MEMORIZED
BY THE ENGINE CONTROL MODULE, AND THE CONTROL SIGNAL IS OUTPUT TO TERMINALS #10, #20, #30, AND #40 OF THE
ENGINE CONTROL MODULE TO OPERATE THE INJECTOR (INJECT THE FUEL). THE SFI SYSTEM PRODUCES CONTROL OF FUEL
INJECTION OPERATION BY THE ENGINE CONTROL MODULE IN RESPONSE TO THE DRIVING CONDITIONS.
*IDLE SPEED CONTROL SYSTEM
THE IDLE SPEED CONTROL SYSTEM INCREASES THE RPM AND PROVIDES IDLING STABILITY FOR FAST IDLE-UP WHEN THE
ENGINE IS COLD AND WHEN THE IDLE SPEED HAS DROPPED DUE TO ELECTRICAL LOAD, ETC. THE ENGINE CONTROL MODULE
EVALUATES THE SIGNALS FROM EACH SENSOR (INPUT SIGNALS (1 TO 5, 11), OUTPUTS CURRENT TO TERMINAL ISCO AND ISCC,
AND CONTROLS THE IDLE AIR CONTROL VALVE.
*A/C CUT CONTROL SYSTEM
WHEN THE VEHICLE SUDDENLY ACCELERATES FROM LOW ENGINE SPEED, THIS SYSTEM CUTS OFF AIR CONDITIONING
OPERATION FOR A FIXED PERIOD OF TIME IN RESPONSE TO THE SPEED SENSOR, THROTTLE VALVE OPENING ANGLE AND
INTAKE MANIFOLD PRESSURE IN ORDER TO MAINTAIN ACCELERATION PERFORMANCE.
THE ENGINE CONTROL MODULE RECEIVES INPUT SIGNALS (4, 5 AND 9), AND INPUTS SIGNALS TO TERMINAL ACT.
3. DIAGNOSIS SYSTEM
WITH THE DIAGNOSIS SYSTEM, WHEN THERE IS A MALFUNCTION IN THE ENGINE CONTROL MODULE SIGNAL SYSTEM, THE
MALFUNCTIONING SYSTEM IS RECORDED IN THE MEMORY. THE MALFUNCTIONING SYSTEM CAN THEN BE FOUND BY READING
THE DISPLAY (CODE) OF THE MALFUNCTION INDICATOR LAMP.
4. FAIL-SAFE SYSTEM
WHEN A MALFUNCTION OCCURS ON ANY SYSTEM, IF THERE IS A POSSIBILITY OF ENGINE THROUBLE BEING CAUSED BY
CONTINUED CONTROL BASED IN THE SIGNALS FROM THAT SYSTEM, THE FAIL-SAFE SYSTEM EITHER CONTROLS THE SYSTEM BY
USING DATA (STANDARD VALUES) RECORDED IN THE ENGINE CONTROL MODULE MEMORY OR ELSE STOPS THE ENGINE.

11 6
SRS
The supplemental restraint system has connectors which possess the functions described below:
1. SRS ACTIVATION PREVENTION MECHANISM
Each connector contains a short spring plate. When the
connector is disconnected, the short spring plate
automatically connects the power source and grounding
terminals of the squib to preclude a potential difference
between the terminals.
2. ELECTRICAL CONNECTION CHECK MECHANISM
This mechanism is designed to electrically check if
connectors are connected correctly and completely.
The electrical connection check mechanism is designed so
that the disconnection detection pin connects with the
diagnosis terminals when the connector housing lock is in
the locked position.

11 9
THE SRS IS A DRIVER AND PASSENGER PROTECTION DEVICE WHICH HAS A SUPPLEMENTAL ROLE TO THE SEAT BELTS.
WHEN THE IGNITION SW IS TURNED TO ACC OR ON, CURRENT FROM THE CIG & RAD FUSE FLOWS TO TERMINAL 10 OF THE
AIRBAG SENSOR ASSEMBLY. ONLY WHEN THE IGNITION SW IS ON DOES THE CURRENT FROM THE IGN FUSE TO TERMINAL 9.
IF AN ACCIDENT OCCURS WHILE DRIVING, WHEN THE FRONTAL IMPACT EXCEEDS A SET LEVEL, CURRENT FROM THE CIG & RAD
OR IGN FUSE FLOWS TO TERMINALS 4 AND 2 OF THE AIRBAG SENSOR ASSEMBLY " TERMINAL 1 OF THE AIRBAG SQUIB "
TERMINAL 2 " TERMINALS 3 AND 1 OF THE AIRBAG SENSOR ASSEMBLY " TERMINAL 5 OR TERMINAL 6 OR BODY GROUND "
GROUND, SO THAT CURRENT FLOWS TO THE AIRBAG SQUIBS AND CAUSES IT TO OPERATE.
THE AIRBAG STORED INSIDE THE STEERING WHEEL PAD IS INSTANTANEOUSLY EXPANDED TO SOFTEN THE SHOCK TO THE
DRIVER.
THE AIRBAG STORED INSIDE THE PASSENGER'S INSTRUMENT PANEL IS INSTANTANEOUSLY EXPANDED TO SOFTEN THE SHOCK
TO THE PASSENGER.
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A1830C1130J 231
A1930D 128J 731
A2030F 831
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
IE20FUSE BLOCK ASSY WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
IM20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LOWER FINISH PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA134ENGINE WIRE AND ENGINE ROOM MAIN WIRE (INSIDE OF R/B NO. 2)
IB136ENGINE ROOM MAIN WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
IG238ENGINE WIRE AND INSTRUMENT PANEL WIRE (UNDER THE INSTRUMENT PANEL CENTER)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EC34INTAKE MANIFOLD
ID36LEFT KICK PANEL
IE36INSTRUMENT PANEL BRACE LH
AB 12
34
5678910A18
YELLOW
12A19
YELLOW
12A20
YELLOW
4 3 XC11
GRAY
XX3
X5X
XX X11
XXX
XXX
X
X D 1
BL ACKF 8
(
SEE PAGE 26)A A A A A
AAAAAAAJ 2
BLUE
(
HINT : SEE PAGE 7)C C A A
AA CCJ 7
GRAY
(
HINT : SEE PAGE 7) B
BBB
SYSTEM OUTLINE

142
ABS
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 BRAKING.
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 (4 WD)
A SIGNAL IS INPUT TO TERMINAL PKB OF THE ABS ECU WHEN THE PARKING BRAKE IS OPERATED.
(4) DECELERATION SENSOR SIGNAL (4 WD)
LONGITUDINAL ACCELERATION IS DETECTED AND A SIGNAL IS INPUT TO THE ABS ECU.
2. SYSTEM OPERATION
DURING SUDDEN BRAKING 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 REPEATED TO MAINTAIN VEHICLE STABILITY AND TO IMPROVE STEERABILITY DURING SUDDEN
BRAKING.
A 8 (A), A 9 (B) ABS RELAY
(A) 1, (B) 2-GROUND : ALWAYS APPROX. 12 VOLTS
(B) 6-GROUND : ALWAYS CONTINUITY
A10, A11 ABS SPEED SENSOR FRONT LH, RH
1-2 : APPROX. 0.92-1.22 KW (20
C, 68
F)
A12, A13 ABS SPEED SENSOR REAR LH, RH
1-2 : APPROX. 0.92-1.22 KW (20
C, 68
F)
A16 (A), (C), A17 (B), (D) ABS ECU
(CONNECT THE ECU CONNECTORS)
(A) 8, (D) 6-GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND
DATA LINK CONNECTOR 1 TS-E1 NOT CONNECTED
(A) 9, (D) 20-GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION AND
DATA LINK CONNECTOR 1 TC-E1 NOT CONNECTED
(B) 4, (C) 1- GROUND,(B) 1,(C) 2-GROUND :
(B) 5, (C) 9-GROUND,(B) 12,(C) 10-GROUND :
(B) 11, (D) 12-GROUND,(B) 10,(D) 13-GROUND :
(B) 22, (D) 25-GROUND,(B) 21,(D) 26-GROUND :
(B) 2,(D) 11-GROUND :
(B) 13,(D) 24-GROUND :
(A) 2, (D) 10-GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(A) 12, (D) 21-GROUND : APPROX. 12 VOLTS WITH BRAKE PEDAL DEPRESSED
(D) 22-GROUND : ALWAYS APPROX. 12 VOLTS
A21, A22 ABS SPEED SENSOR REAR LH, RH
1-2 : APPROX. 0.8-1.2 KW (20
C, 68
F)
P 2 PARKING BRAKE SW
1-GROUND : CLOSED WITH PARKING BRAKE LEVER PULLED UP
S 5 STOP LIGHT SW
2-1 : CLOSED WITH BRAKE PEDAL DEPRESSED
ALWAYS CONTINUITYAPPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
AND ABS WARNING LIGHT GOES OFF
SYSTEM OUTLINE
SERVICE HINTS

B11562
P17875
Ohmmeter
IG0147
Megger
Ground
N00917
− IGNITIONIGNITION SYSTEM
IG−3
1996 RAV4 (RM447U)
2. INSPECT HIGH−TENSION CORDS
(a) Disconnect the high−tension cords from spark plug.
Disconnect the high−tension cords at the rubber boot. Do
not pull on the high−tension cords.
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
(b) Disconnect the high−tension cords from ignition coil.
(c) Disconnect the high−tension cords from distributor cap.
(d) Inspect the high−tension cord resistance.
Using an ohmmeter, measure the resistance.
Maximum resistance: 25 kΩ per cord
If the resistance is greater than maximum, check the terminals.
If necessary, replace the high−tension cord.
(e) Reconnect the high−tension cords to distributor cap.
(f) Reconnect the high−tension cord to ignition coil.
(g) Reconnect the high−tension cords to spark plugs.
3. INSPECT SPARK PLUGS
NOTICE:
Never use a wire brush for cleaning.
Never attempt to adjust the electrode gap on a used
spark plug.
Spark plugs should be replaced every 100,000 km
(60,000 miles).
(a) Disconnect the high−tension cords from the spark plugs.
(b) Using a megger (insulation resistance meter), measure
the insulation resistance.
Standard correct insulation resistance:
10 MΩ or more
If the resistance is less than specified, proceed to step (d).
HINT:
If a megger is not available, the following simple method of in-
spection provides fairly accurate results.
Simple Method:
Quickly race the engine to 4,000 rpm 5 times.
Remove the spark plug. (See step (c))
Visually check the spark plug.
If the electrode is dry... OK
If the electrode is wet... Proceed to step (d)
Reinstall the spark plug. (See step (g))

S05308
16mm Plug
Wrench
Z00032
IG0152
IG−4
− IGNITIONIGNITION SYSTEM
1996 RAV4 (RM447U)
(c) Using a 16 mm plug wrench, remove the 4 spark plugs.
(d) Visually check the spark plug for thread damage and insu-
lator damage.
If abnormal, replace the spark plug.
Recommended spark plug:
DENSOPK20R11
NGKBKR6EP−11
(e) Inspect the electrode gaps.
Maximum electrode gap for used spark plug:
1.3 mm (0.051 in.)
If the gap is greater than maximum, replace the spark plug.
Correct electrode gap for new spark plug:
1.1 mm (0.043 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only the base
of the ground electrode. Do not touch the tip. Never attempt
to adjust the gap on the used plug.
(f) Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then
clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kgf/cm
2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
(g) Using a 16 mm plug wrench, install the 4 spark plugs.
Torque: 18 N·m (180 kgf·cm, 13 ft·lbf)
(h) Reconnect the high−tension cords from the spark plugs.
4. INSPECT IGNITION COILS
(a) Disconnect the ignition coil connector.
(b) Disconnect the high−tension cord from ignition coil.
(c) Inspect the primary coil resistance.
Using an ohmmeter, measure the resistance between the
positive (+) and negative (−) terminals.
Primary coil resistance:
Cold0.36 − 0.55 Ω
Hot0.45 − 0.65 Ω
If the resistance is not as specified, replace the ignition coil.

B11565
B11566
B11567
− IGNITIONIGNITION SYSTEM
IG−5
1996 RAV4 (RM447U)
(d) Inspect the secondary coil resistance.
Using an ohmmeter, measure the resistance between the
positive (+) and high−tension terminals.
Secondary coil resistance:
Cold9.0 − 15.4 kΩ
Hot11.4 − 18.1 kΩ
If the resistance is not as specified, replace the ignition coil.
(e) Reconnect the high−tension cord to ignition coil.
(f) Reconnect the ignition coil connector.
5. INSPECT DISTRIBUTOR
(a) Remove the distributor cap.
Remove the 2 bolts, and disconnect the distributor cap
from the distributor housing.
(b) Remove the rotor.
(c) Inspect the air gap.
Using SST, measure the air gap between the signal rotor
and pick up coil projection.
SST 09240−00020
Air gap: 0.2 − 0.45 mm (0.008 − 0.018 in.)
If the air gap is not as specified, replace the distributor housing
assembly.
(d) Disconnect the distributor connector.
(e) Inspect the signal generator (Pickup coil) resistance.
Using an ohmmeter, measure the resistance between ter-
minals.
Pickup coil resistance:
Cold135 − 220 Ω
Hot175 − 255 Ω
If the resistance is not as specified, replace the distributor hous-
ing assembly.
(f) Reconnect the distributor connector.
(g) Reinstall the rotor.
(h) Reinstall the distributor cap.
Install a new packing and distributor cap with the 2 bolts.

Z13341
Q06243
Q06242
BE2682
MX−74
− MANUAL TRANSAXLEDIFFERENTIAL LOCKING SYSTEM (4WD)
1996 RAV4 (RM447U)
2. INSPECT DIFFERENTIAL LOCK CONTROL COM-
PONENTS
(a) Inspect the differential lock control switch continuity.
Switch PositionTester ConnectionSpecified Condition
OFF (Free)7−10Continuity
ON (Lock)7−8Continuity
Illumination circuit2−3Continuity
If continuity is not as specified, check the bulb or replace the
switch.
(b) Inspect the differential lock warning buzzer.
(1) Remove the combination meter, then remove the
differential lock warning buzzer.
(2) Taking care to match the polarity of the buzzer, ap-
ply battery positive voltage to the terminals of the
buzzer and check that the buzzer sounds.
(c) Inspect the differential lock indicator switch continuity.
Switch PositionTester ConnectionSpecified Condition
Free1 − 2No continuity
Push1 − 2Continuity
If continuity is not as specified, replace the switch.