steering TOYOTA RAV4 1996 Service User Guide

BE3840N14706I09125
ON
GND
CMS (−)
(+)
N15555
42
DI−372
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
INSPECTION PROCEDURE
1 Check voltage between terminal CMS and GND of cruise control ECU connector.
PREPARATION:
Remove cruise control ECU with connectors still connected.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminal CMS and GND of
cruise control ECU connector when main switch is held
ON and OFF.
OK:
Main switchVoltage
OFF10 − 16 V
ONBelow 1 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
NG
2 Check main switch.
PREPARATION:
(a) Remove steering wheel center pad (See page SR−12).
(b) Disconnect cruise control switch connector.
CHECK:
Check continuity between terminals 2 and 4 of cruise control
switch connector when main switch is held ON and OFF.
OK:
Main switchTerminal No. to continuity
OFF
ON2 − 4
NG Replace control switch.
OK

30
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 12 A/C Amplifier C 6 Cigarette Lighter Illumination
A 13 A/C Control SW C 7 Clock
A 14 A/C Thermistor C 8 Clutch Start SW
A 15 ABS Deceleration Sensor C 9 Combination Meter
A 16 ABS ECU C 10 Combination Meter
A 17 ABS ECU C 11 Combination Meter
A 18 Airbag Sensor Assembly C 12 Combination SW
A 19 Airbag Squib (Front Passenger Airbag Assembly) C 13 Combination SW
A 20 Airbag Squib (Steering Wheel Pad) C 14 Combination SW
C 15 Cruise Control Clutch SW
B 3 Blower Motor C 16 Cruise Control ECU
B 4 Blower Resisitor
B 5 Blower SW D 2 Data Link Connector 3
B 6 Buckle SW LH D 3 Defroster Mode SW
D 4 Diode (Engine Idle-Up)
C 4 Center Diff. Lock Control SW D 5 Door Lock Control Relay
C 5 Cigarette Lighter

11 5
SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following
precautionary instructions and the procedure and precautions in the Repair Manual for the applicable model
year.

Malfunction symptoms of the supplemental restraint system are difficult to confirm, so the diagnostic trouble
codes become the most important source of information when troubleshooting.
When troubleshooting the supplemental restraint system, always inspect the diagnostic trouble codes before
disconnecting the battery.

Work must be started after 90 seconds from the time the ignition SW is turned to the LOCKº position and the
negative (-) terminal cable is disconnected from the battery.
(The supplemental restraint system is equipped with a back-up power source so that if work is started within
90 seconds of disconnecting the negative (-) terminal cable of the battery, the SRS may be activated.)
When the negative (-) terminal cable is disconnected from the battery, the memory of the clock and audio
systems will be canceled. So before starting work, make a record of the contents memorized by each memory
system. When work is finished, reset the clock and audio system as before and adjust the clock.
To avoid erasing the memory of each memory system, never use a back-up power supply from outside the
vehicle.

When removing the steering wheel pad or handling a new steering wheel pad, keep the pad upper surface
facing upward. Also, lock the lock lever of the twin lock type connector at the rear of the pad and take care
not to damage the connector.
(Storing the pad with its metallic surface up may lead to a serious accident if the SRS inflates for some reason.)

Always store a removed or new front passenger airbag assembly with the airbag door facing up. Storing the
airbag assembly with the airbag door facing down could cause a serious accident if the airbag inflates.

Store the steering wheel pad where the ambient temperature remains below 935C (2005F), without high
humidity and away from electrical noise.

Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.

Never disassemble and repair the steering wheel pad, front passenger airbag assembly, airbag sensor
assembly.

Before repairing the body, remove the airbag sensor if during repair shocks are likely to be applied to the
sensors due to vibration of the body or direct tapping with tools or other parts.

Do not reuse a steering wheel pad or front airbag sensors.
After evaluating whether the center airbag sensor assembly is damaged or not, decide whether or not to reuse
it. (See the Repair Manual for the method for evaluating the center airbag sensor assembly.)

When troubleshooting the supplemental restraint system, use a high-impedance (Min. 10kW/V) tester.

The wire harness of the supplemental restraint system is integrated with the instrument panel wire harness
assembly.
The vehicle wiring harness exclusively for the airbag system is distinguished by corrugated yellow tubing, as
are the connectors.

Do not measure the resistance of the airbag squibs.
(It is possible this will deploy the airbag and is very dangerous.)

If the wire harness used in the supplemental restraint system is damaged, replace the whole wire harness
assembly.

INFORMATION LABELS (NOTICES) are attached to the periphery of the SRS components. Follow the
instructions on the notices.

11 8
SRS
FROM POW ER SOURCE SYSTEM (
SEE PAGE 54)
IB1 17 IG218
EA1 3
11
GR
B-O
B-R W-G GR
B-O
W-L
W-L W-L
W-L
V W-L RNING LIGHT
METER]
CTOR J 7
IE IDEC
W-B
W-B
L
B
WR
BR BR
AIRBAG SQUIB
(
STEERING
W HEEL PAD) A20
AIRBAG SQUIB
(
FRONT PASSENGER' S
AIRBAG ASSEM BLY) A19DATA LINK
CONNECTO R 1
J 2
JUNCTIO N
CONNECTO
A 125
15A
CIG & RAD7. 5A
IG N7. 5A
SRS
71116 61015
FUSE
BLOCK F 8
1E 4
1M 21E 1
1M 31E 7
1M 4
4 3
W-G
SRS WA
[CO M B. C11
AAC
CBC
B JUNCTIO N CONNE
W-L
V W-B
W-B
12
SPIRAL
CABLE
TC A B
E
3 D 1
A
R
10 9 8 7
ACC IG2 LA TC
E1 E2 D+ D- P+ P-AIRBAG SENSOR ASSEMBLY A18
43 21 65

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

K
1
234
11 RAV4
2AC C
IG 1
IG 2
ST2 AM13
4
6 7AM2
40A AM 1
1D 9
1K 411IG1
7EA1
2
20A
AM2
2 2
2
80A MAIN
100A ALT
20 1
21 2
2 6W
W B- R
W B-R
BATTERY
IE Instrument
panel brace
LHIDLeft kick
panel 1D 8
1E 91F51D 6
1M 31E 1
1M 21E 41E 7
1M 4
3EA1 18 IG2
W-B W-B RLB W
B-OGR
B-OGR
B- OL-RWW-LVVW-L
W-L
W-L W-G W-G B-R
B-R
B
W
W-L
6 543 21B C4 A
11 7 16
910 87B C3 A
15 6 10
12
12 E1 E2 D+ D - P+ P- F 8
FUSE
BLOCK
7. 5A IGN15A CIG
& RAD 7. 5A SRS
C
A20
AIRBAG SQUIB
(
Steering
Wheel Pad)A19
AIRBAG SQUIB
(
Front P assenger` s
Airbag Assembly) IG A CC LA TCA18
AIRBAG SENSOR
ASSEMBLYJ 7
JU NC TIO N
CO N NEC TO R
C11
SRS INDICATOR LIGHT
[COMB. METER]
J 7
JUNCTION
CO N NEC TO R
J 7
JUNCTION
CONNECTOR
T o D ate Link
C onnector 1
<2-3
R-L
Y-B
R- G 4 3
F 8
10A
GAUGE
[FUSE BLOCK]
81B1E 8
, C 10
J 1
JUNCTION
CONNECTOR 2 1
2 113 B 1 810Y- B Y- BW-BY-B
V 5
VSV(
C en ter D iff.
Lock No. 1) V 6
VSV(
C en ter D iff.
Lock No. 2)
C 4
CENTER DIFF.
LOCK CONTROL SWC 1
CENTER DIFF.
LOCK W ARNING
BUZZER SW
C OM BIN A TIO N M ET E R
C. DIFF
LOCK
EA IGRadiator right Right kick
panel A A 10 EA1W-B W-B W-BW-B
W-B W-B B
BUZZER
B
R- L R-L
IH214A C 9 BROW N
B C10 BLUE C OM B INA TIO N M ET E R
IG 21
IG 213
2 7
R-B
Y- B Y- BR-B R- G
Y-B
A 3
2B
A C 9
13 9 8 7 6 5 4 3 2 1 101112
13 9 8 7 6 5 4 3 2 1 101112
A A
J10
JU NC TIO N
CO NN ECTO R C
BC
BBJ10
JU NC TIO N
CONNECTOR
J 3
JUNCTION
CONNECTOR
Center Diff. Lock(
4WD M/T)
F 7
FUSIBLE LINK
BLOCK7
1D1
1F B-YL- RW
W
B-RB-R
I1 0
IGN ITIO N S W
SRS Power Source
SPIRAL
CABLE17 IB1
W-L W-L LOCK UNLOCK

RS02X−12
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS−7
1996 RAV4 (RM447U)
STEERING WHEEL PAD AND SPIRAL CABLE
COMPONENTS

RS02Y−08
RS−8
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
1996 RAV4 (RM447U)
REMOVAL
(See page SR−12)

RS02Z−11
H13549
H13550
H13551
H13549
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS−9
1996 RAV4 (RM447U)
INSPECTION
1. VEHICLE NOT INVOLVED IN COLLISION
(a) Do a diagnostic system check (See page DI−285).
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) installed in the ve-
hicle.
Check for cuts, minute cracks or marked discoloration of
the steering wheel pad top surface and grooved portion.
2. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
NOT DEPLOYED
(a) Do a diagnostic system check (See page DI−285).
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) installed in the ve-
hicle.
Check for cuts and cracks in, or marked discolor-
ation of the steering wheel pad top surface and
grooved portion.
Check for cuts and cracks in wire harnesses, and for
chipping in connectors.
Check for deformation of the horn button contact
plate of the steering wheel.
HINT:
If the horn button contact plate of the steering wheel is de-
formed, never repair it. Always replace the steering wheel
assembly with a new one.
There should be no interference between the steering
wheel pad and the steering wheel, and the clearance
should be uniform all the way around when the new steer-
ing wheel pad is installed on the steering wheel.
CAUTION:
For removal and installation of the steering wheel pad, see
page SR−12 and SR−19, and be sure to follow the correct
procedure.

RS−10
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
1996 RAV4 (RM447U)
3. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED
(a) Do diagnostic system check (See page DI−285).
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) removed from the ve-
hicle.
Check for deformation of the horn button contact
plate of the steering wheel.
Check for damage to the spiral cable connector and
wire harness.
HINT:
If the horn button contact plate of the steering wheel is de-
formed, never repair it. Always replace the steering wheel
assembly with a new one.
There should be no interference between the steering
wheel pad and the steering wheel, and the clearance
should be uniform all the way around when the new steer-
ing wheel pad is installed on the steering wheel.