1996 TOYOTA LAND CRUISER diagram

I00496
Cruise Control ECU
Fusible Link Fusible Link
Battery BR
BR
Instrument
Panel Fuse Block
ECU−IG
Ignition Switch BB
2
4 3
2
F6
1 JUNCTION
CONNECTOR J6
C17
C17B−W
I12
I12 4
2
2
2
2 B−W
F11
F11
B
B−Y
B
6EA2B
GND
13
14
AM1
FL AM1
1
ID
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−325
1996 LAND CRUISER (RM451U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
The ECU power source supplies power to the actuator and sensors, etc.. When\
terminal GND and the cruise
control ECU case are grounded.
WIRING DIAGRAM
DI5OM−02
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I00497
Cruise Control ECU
B−R BATT
C17
W
W Instrument Panel Fuse Block
Fusible Link
F8 F11
F11
EA3
FL MAIN
Battery 3
ECU−B 15
2
1
N18670
Junction Block No.1
ECU−IG
Fuse
DI−328
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
Back −up Power Source Circuit
CIRCUIT DESCRIPTION
The ECU back− up power source provides power even when the ignition is off and is used for DTC memory,
etc..
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check ECU −IG fuse.
PREPARATION:
Remove the ECU −IG fuse from relay block No.2.
CHECK:
Check continuity of ECU −IG fuse.
OK:
Continuity
NG Check for short in all the harness and compo- nents connected to the ECU −IG fuse.
OK
DI5ON−02
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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
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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
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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
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Z05953
SpacerHousing
Female Male
R10587
 When Connector is Connected
 When Connector is Disconnected
Short Spring Plate Short Spring Plate
Contacting M ale Terninal
Short Spring Plate ON
Housing
Connectors Short Spring PlateSquib
Closed CircuitSquib
Housing
Terminal
RS−4
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
1996 LAND CRUISER (RM451U)
(1) Terminal Twin −Lock Mechanism
Each connector has a two −piece construction con-
sisting of a housing and a spacer. This design se-
cures the locking of the terminal by two locking de-
vices (the retainer and the lance) to prevent
terminals from coming out.
(2) Airbag Activation Prevention Mechanism
Each conn ector contains a short spr ing plate. When
the connector is disconnected, the short spring
plate automatically connects the power source and
grounding terminals of the squib.
HINT:
The type of connector shown above is used for connectors 2,
3 and 4 in the diagram on the preceding page.
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