1996 TOYOTA LAND CRUISER Cruise control

AB0119I00013 I00028
ONCMS
(−)
(+)
DI−330
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
Main Switch Circuit (Cruise Control Switch)
CIRCUIT DESCRIPTION
When the cruise control main switch is turned off, the cruise control does not operate.
WIRING DIAGRAM
See page DI−311 .
INSPECTION PROCEDURE
1 Check voltage between terminal CMS of cruise control ECU connector and body
ground.
PREPARATION:
(a) Remove the ECU with connector still connected.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal CMS of cruise control ECU
connector when main switch is held on and off.
OK:
Main switchVoltage
OFF10 − 14 V
ONBelow 2 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−295 ).
NG
DI5OO−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

N15969
35
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−331
1996 LAND CRUISER (RM451U)
2 Check main switch continuity.
PREPARATION:
(a) Remove steering wheel center pad (See page SR−11).
(b) Disconnect the control switch connector.
CHECK:
Check continuity between terminals 3 and 5 of control switch
connector when main switch is held on and off.
OK:
Switch positionTester connectionSpecified condition
OFF3 − 5No continuity
Hold ON3 − 5Continuity
NG Replace control switch.
OK
3 Check harness and connector between cruise control ECU and main switch (\
See page IN−28 ).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU (See
page IN−28 ).
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

I00498
Cruise Control ECU
C17
Battery Fusible
Link
F6 B−L W
B
B G−Y
F11 F11
GAUGE
Y
2
Y9
CRUISE MAIN Indicator (Combination Meter)C10
C10
2 2 2
2
22
43
EA2
6
Ignition Switch
I12 I12
4
Instrument Panel Fuse Block
1
AM1
AM1 J1
JUNCTION
CONNECTOR
PI
7
DI−332
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
CRUISE MAIN Indicator Light Circuit
CIRCUIT DESCRIPTION
When the cruise control main switch is turned ON, CRUISE MAIN indicator ligh\
t lights up.
WIRING DIAGRAM
DI5OP−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

AB0119I00020 I00029
ON
PI
(−)
(+)
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−333
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check voltage between terminals PI and GND of cruise control ECU connector.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals PI and GND of ECU con-
nector when main switch on and off.
OK:
Switch positionVoltage
OFF10 − 16 V
ONBelow 1.2 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−295 ).
NG
2 Check combination meter (See page BE−34 ).
NG Replace combination meter.
OK
Check and replace cruise control ECU (See
page IN−28 ).
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

I00499
Cruise Control ECU
DLC1
TC D111
B−Y IH111
B−YC17 TC8
N06219
DLC1
TC
E1
DI−334
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
Diagnosis 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.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals Tc and E1 of DLC1.
OK:
Voltage: 10 − 14 V
OK Proceed to next circuit inspection shown on problem symptoms table (See page DI−295 ).
NG
DI5OQ−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−335
1996 LAND CRUISER (RM451U)
2 Check harness and connector between cruise control ECU and DLC1, DLC1 and
body ground (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU
(See page IN−28 ).
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI−336
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
Actuator Control Cable
INSPECTION PROCEDURE
1 Actuator control cable inspection
CHECK:
(a) Check that the actuator, control cable 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.
OK:
Freeplay: less than 10 mm
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.
DI5OR−01
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

EC07H−06
−
EMISSION CONTROL EMISSION CONTROL SYSTEM
EC−1
614
Author: Date:
1996 LAND CRUISER (RM451U)
EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of HC, CO a\
nd 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 V entilation
(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 SF section \
in this manual.
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010