1996 TOYOTA RAV4 Service Repair Manual

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

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−373
1996 RAV4 (RM447U)
3 Check harness and connector between cruise control ECU and main switch,
main switch and body ground (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU.

N17905
DLC1Cruise Control ECU
J9
Junction
Connector
13 W−L317
VA AV 8
Tc Tc
EB1IC1 W−L
BE3840N17427I09126
ON
DLC 1
E1
Tc (−)
(+)
DI−374
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
Tc Circuit
CIRCUIT DESCRIPTION
This circuit sends a signal to the ECU that DTC output is required.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1 of DLC1.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminals Tc and E1 of DLC1.
OK:
Voltage: 10 − 16 V
NG Proceed to next circuit inspection shown on
matrix chart (See page DI−336).
OK
DI430−02

− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−375
1996 RAV4 (RM447U)
2 Check for open and short in harness and connector between ECU and DLC1,
DLC1 and body ground (See page IN−30).
NG Repair or replace harness or connector.
OK
Check and replace ECU.

DI−376
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 RAV4 (RM447U)
Actuator Control Cable Inspection
CHECK:
(a) Check that the actuator, control cable and throttle link are properly installed and that the cable and link
are connected correctly.
(b) Check that the actuator and bell crank are operating smoothly.
(c) Check that the cable is not loose or too tight.
HINT:
If the control cable is very loose, the vehicle’s loss of speed going uphill will be large.
If the control cable is too tight, the idle RPM will become high.
DI431−01

EC05E−01
− EMISSION CONTROLEMISSION CONTROL SYSTEM
EC−1
1996 RAV4 (RM447U)
EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of HC, CO and NOx exhausted from the
engine ((3), (4) and (5)), to prevent the atmospheric release of blow−by gas−containing HC (1) and evapo-
rated fuel containing HC being released from the fuel tank (2).
The function of each system is shown in the following table.
SystemAbbreviationFunction
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Exhaust Gas Recirculation
(4) Three−Way Catalytic Converter
(5) Sequential Multiport Fuel Injection*PCV
EVAP
EGR
TWC
SFIReduces HC
Reduces evaporated HC
Reduces NOx
Reduces HC, CO and NOx
Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
Remark: * For inspection and repair of the SFI system, refer to the SFI section in this manual.

EC05F−04
EC−2
− EMISSION CONTROLPARTS LAYOUT AND SCHEMATIC DRAWING
1996 RAV4 (RM447U)
PARTS LAYOUT AND SCHEMATIC DRAWING
LOCATION

EC05G−03
− EMISSION CONTROLPARTS LAYOUT AND SCHEMATIC DRAWING
EC−3
1996 RAV4 (RM447U)
DRAWING