1996 TOYOTA LAND CRUISER lights

Q08225
Q08634
TOYOTA Hand−held Tester
DLC3
DI−132
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
mode for technicians to simulate malfunction symp-
toms and perform troubleshooting. Most DTCs use
2 trip detection logic(*) to prevent erroneous detec-
tion. By switching the ECM to check mode when
troubleshooting, the technician can cause the MIL
to light up for a malfunction that is only detected
once or momentarily (TOYOTA hand−held tester)
(See step 3).
*2 trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the 2nd test
drive, this 2nd detection causes the MIL to light up.
2. Normal Mode: INSPECT DIAGNOSIS
(a) Check the MIL. (1) The MIL lights up when the ignition switch is turnedON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE−2 ).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the sys-
tem.
(b) Check the DTC.
NOTICE:
TOYOTA hand−held tester only:
When the diagnostic system is switched from the normal
mode to the check mode, it erases all DTCs and freeze
frame data recorded in the normal mode. So before switch-
ing modes, always check the DTCs and freeze frame data,
and note them down. (1) Prepare the OBD II scan tool (complying with SAEJ1978) or TOYOTA hand−held tester.
(2) Connect the OBD II scan tool or TOYOTA hand−
held tester to the DLC3 in the fuse box at the lower
left of the instrument panel.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or TOYOTA hand−held tester switch ON.
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Q08634
TOYOTA Hand−held Tester
DLC3
FI3605
ON
OFF 0.13 sec.
Flashing
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−133
1996 LAND CRUISER (RM451U)
(4) Use the OBD II scan tool or TOYOTA hand−held
tester to check the DTCs and freeze frame data.
Note them down (For operating instructions, see
the OBD II scan tool’s instruction book).
(5) See page DI−143 to confirm the details of the
DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding TOYOTA hand −held tester) to check the DTCs, use
the normal mode. For codes on the DTC chart subject to ”2
trip detection logic”, turn the ignition switch off after the
symptoms have been simulated for the 1st time. Them re-
peat the simulation process again. When the program has
been simulated twice, the MIL lights up and the DTCs are
recorded in the ECM.
3. Check Mode: INSPECT DIAGNOSIS
HINT:
TOYOTA hand−held tester only:
Compared to the normal mode, the check mode has high sens-
ing ability to detect malfunctions. Furthermore, the same diag-
nostic items which are detected in the normal mode can also be
detected in check mode.
(a) Check the DTC. (1) Check the initial conditions.
Battery positive voltage 11 V or more.
Throttle valve fully closed.
Transmission in P position.
Air conditioning switched off.
(2) Turn the ignition switch OFF.
(3) Prepare the TOYOTA hand−held tester.
(4) Connect the TOYOTA hand− held tester to the
DLC3 in the fuse box at the lower left of the instru-
ment panel.
(5) Turn the ignition switch ON and switch the T OYOTA
hand −held tester ON.
(6) Switch the TOYOTA hand −held tester from the nor-
mal mode to the check mode (Check that the MIL
flashes).
(7) Start the engine (The MIL goes).
(8) Simulate the conditions of the malfunction de- scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs etc.
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Q08582
ECM
O/D OFF Indicator Light
(Combination Meter)
Ignition Switch
Fuse BlockO/D Main Switch* E7
2
P−L
B−L Y
GAUGE
Battery B+
W
2
Y
3 2
4 4
2
2 2
4
W−B
6
FL AM1
B−Y
22
E6 A
A
EA2 C12
C12
19
OD2
B ID2
J1
B 9
1
1 8
3
Fuse Block
P−L
P−L
AM1
2
BF
R/B No. 2 R/B No. 2
O/D Main switch
Contact go off with switch pushed in.
Contact go on with switch once again.
*:
DI−174
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
O/D Main Switch & O/D OFF Indicator Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go off when the switch is pushed in and come on when it is pushed once again.\
In O/D main switch OFF position, the O/D OFF indicator lights up, and the \
ECM prohibits shifting to O/D.
WIRING DIAGRAM
DI5L3−03
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D00077 BE3840D00092
ON
ON
OFF
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−175
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
O/D OFF indicator light does not light up:
1 Check operation of O/D main switch.
CHECK:
(a) Turn the ignition switch ON.
(b) Check the O/D OFF indicator light when the O/D main
switch is pushed in to ON.
OK:
O/D OFF indicator light goes off
CHECK:
Check the O/D OFF indicator light when the O/D main switch is
pushed again to OFF.
OK:
O/D OFF indicator light lights up
NG Go to step 4.
OK
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BE3840
Q07359D00023
ON
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−183
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check operation of 2nd start switch.
CHECK:
(a) Turn the ignition switch ON.
(b) Check the ”2nd STRT” indicator light when the 2nd start
switch is pushed in to ON.
OK:
”2nd STRT” indicator light lights up.
CHECK:
Check the ”2nd STRT” indicator light when the 2nd start switch
is pushed again, or PWR mode switch is pushed into OFF.
OK:
”2nd STRT” indicator light goes off. When PWR mode
switch is pushed in to ON, ”2nd STRT” indicator light
goes off, and ”PWR” indicator light lights up.
OK Proceed to next circuit inspection shown on problem symptoms table (See page DI−147 ).
NG
2 Check 2nd start indicator bulb.
NG Replace 2nd start indicator bulb.
OK
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BE3840
Q07359D00023
ON
-
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI-186
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check operation of 2nd start switch.
CHECK:
(a) Turn the ignition switch ON.
(b) Check º2nd STRTº indicator light when 2nd start switch is
pushed in to ON.
OK:
º2nd STRTº indicator light lights up.
CHECK:
Check º2nd STRTº indicator light when 2nd start switch is
pushed again, or PWR mode switch is pushed into OFF.
OK:
º2nd STRTº indicator light goes off. When PWR mode
switch is pushed in to ON, º2nd STRTº indicator light
goes off, and ºPWRº indicator light lights up.
OK Proceed to next circuit inspection shown on matrix chart (See page DI-150).
NG
2 Check 2nd start indicator bulb.
NG Replace 2nd start indicator bulb.
OK
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W02198
1
STOP
G−O2
G−W
G−W
G−W
W−B 6
3
Stop Light
A12STP ABS ECU
ID2
Stop light Switch
High Mounted
Stop Light 2
BG
G−W
G−W
G−W
BQ1
2
DI−228
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
Stop Light Switch Circuit
CIRCUIT DESCRIPTION
This stop light switch senses whether the brake pedal is depressed or releas\
ed, and sends the signal to the
ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check that stop light lights up when brake pedal is depressed and turns off when brake pedal is released.
NG Repair stop light circuit (See page BE−24).
OK
DI5MG−02
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W02199
BatteryJunction
Connector
ID
W−B
B−W
ABS Control Relay
1 4
2
6 3
1
4
Motor
Relay
Solenoid
Relay
ABS ECU
ABS ECU
ABS Actuator 4
5
A7
A6
A6 A6
A4 R−L
R−L
DLC1
Short Pin
B−W
IH1
A12
ABS ECU
W
13
C10
GAUGE
2223 ABS
Warning
Light
A
A
J1
C10IH1
20
A7
A7A7
A7
EA3
EA3
2
1 B−W
B−W
B−L OO
O
Y
54
3
23 OY
DI−230
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory. After removing the short pin of the DLC1, connect terminals
Tc and E
1 of the DLC1 to make the ABS warning light blink and output the DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
Troubleshooting in accordance with the chart below for each trouble symptom.
ABS warning light does not light upGo to step 1
ABS warning light remains onGo to step 3
1 Check ABS warning light.
See Combination Meter Troubleshooting on page BE−2.
NG Repair bulb or combination meter assembly.
OK
DI5MJ−03
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