1996 TOYOTA LAND CRUISER ecu

Z16656
BC
KLS
E
STP SLS−
ACC
IG A
SLS+
AT0T7−04
Q07316
Ohmmeter
Q07315Battery
−
AUTOMATIC TRANSMISSION SHIFT LOCK SYSTEM
AT−13
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure the voltage at each terminal.
HINT:
Do not disconnect the ECU connector.
2. INSPECT SHIFT LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals.
Standard resistance: 20 − 28 Ω
If the resistance is not as specified, replace the solenoid.
(c) Apply the battery positive voltage between terminals. At this time, confirm that solenoid operate.
If the operation is not as specified, replace the solenoid.
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−
BODY ELECTRICAL BODY ELECTRICAL SYSTEM
BE−5
1996 LAND CRUISER (RM451U)
Fuel gauge does not operate or abnormal operation.
1. Fuel Receiver Gauge
2. Fuel Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−32
−
Engine coolant temperature gauge does not operation or
abnormal operate.
1. Engine Coolant Temperature Receiver Gauge
2. Engine Coolant Temperature Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−32−
Oil pressure gauge does not operate or abnormal operation.
1. Oil Pressure Receiver Gauge
2. Oil Pressure Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−34−
All illumination lights do not light up.
1. TAIL Fuse (I/P F/B)
2. Light Control Rheostat
3. Wire Harness−
BE−34 −
Brightness does not change even when rheostat turned.1. Bulb
2. Wire Harness−
−
Only one illumination light does not light up.1. Bulb
2. Wire Harness−
−
WARNING LIGHTS:
COMBINATION METER
SymptomSuspect AreaSee page
Warning lights do not lights up.
(Except discharge, SRS and door open)1. GAUGE Fuse (I/P F/B)
2. Meter Circuit
3. Wire Harness−
BE−32 −
Brake warning light does not light up.
1. Bulb
2. Brake Fluid Level Switch
3. Parking Brake Switch
4. Meter Circuit
5. Wire Harness−
BE−34
BE−34
BE−32 −
Open door warning light does not light up.
1. Bulb
2. Door Courtesy Switch
3. DOME Fuse (No.2 R/B)
4. Meter Circuit
5. Wire Harness−
BE−21
BE−21 −
−
−
SRS warning light does not light up
1. Bulb
2. Airbag Sensor Assembly
3. ECU− B Fuse (I/P F/B)
4. Meter Circuit
5. Wire Harness−
−
−
BE−32 −
Discharge warning light does not light up.
1. Bulb
2. IGN Fuse (No.1 J/B)
3. Generator
4. Meter Circuit
5. Wire Harness−
−
−
BE−32 −
Seat belt warning light does not light up.
1. Bulb
2. Seat Belt Buckle Switch
3. Seat Belt Warning Relay (I/P F/B)
4. Meter Circuit
5. Wire Harness−
BE−34 −
BE−32 −
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BE−6
−
BODY ELECTRICAL BODY ELECTRICAL SYSTEM
1996 LAND CRUISER (RM451U)
Engine oil level warning light does not light up.
1. Bulb
2. Meter Circuit
3. Engine Oil Level Warning Switch
4. Wire Harness−
BE−32
BE−34 −
Low oil pressure warning light does not light up.
1. Bulb
2. Low Oil Pressure Warning Switch
3. Meter Circuit
4. Wire Harness−
BE−32
BE−34 −
Fuel level warning light does not light up.
1. Bulb
2. Fuel Level Warning Switch
3. Meter Circuit
4. Wire Harness−
BE−34
BE−32 −
INDICATOR LIGHTS:
COMBINATION METER
SymptomSuspect AreaSee page
High beam indicator light does not light up.
1. Bulb
2. Headlight and Taillight System
3. Meter Circuit
4. Wire Harness−
BE−19
BE−32 −
Shift indicator lights do not light up. (ALL)
1. Shift Position Indicator Wiring Circuit
2. Park/Neutral Position Switch
3. Wire Harness
4. Bulb−
BE−34 AT −6
−
Shift indicator lights do not light up. (L, 2, D)
1. Bulb
2. Shift Position Indicator Wiring Circuit
3. Park/Neutral Position Switch
4. Light Control Rheostat
5. Wire Harness−
BE−34 AT −6
BE−34 −
Shift indicator lights do not light up. (PWR)
1. Bulb
2. Shift Position Indicator Wiring Circuit
3. Pattern Select Switch
4. Wire Harness−
BE−34 AT −6
−
Shift indicator lights do not light up. (2nd START)
1. Bulb
2. Shift Position Indicator Wiring Circuit
3. ECM
4. Wire Harness−
AT −6
−
−
Only one shift indicator does not light up.1. Bulb
2. Shift Position Indicator Wiring Circuit−
BE−34
Indicator lights do not light up. (Except Turn, Hi −beam)1. GAUGE Fuse (I/P F/B)
2. Wire Harness−
−
O/D OFF indicator light does not light up.
1. Bulb
2. O/D Main Switch
3. Meter Circuit
4. Wire Harness−
−
BE−32 −
Malfunction indicator light does not light up.
1. Bulb
2. ECM
3. Wire Harness−
−
−
Cruise control indicator light does not light up.
1. Bulb
2. Cruise Control ECU
3. Meter Circuit
4. Wire Harness−
−
BE−32 −
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BR1D8−04
BR−40
−
BRAKE PARKING BRAKE
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. REMOVE REAR WHEEL
2. REMOVE REAR DISC BRAKE ASSEMBLY
(a) Remove the 2 mounting bolts and remove the disc brake assembly.
Torque: 88 N·m (900 kgf·cm, 65 ft·lbf)
(b) Suspend the disc brake assembly securely. Ensure that the hose is not stretched.
3. REMOVE DISC
Place the matchmarks on the disc and rear hub, and remove the
disc.
HINT:
If the disc cannot be removed easily, turn the shoe adjuster until
the wheel turns freely.
4. REMOVE TENSION SPRING
Using needle −nose pliers, remove the tension spring.
5. REMOVE SHOE RETURN SPRINGS
Using SST, remove the shoe return springs. SST 09717−20010
HINT:
Using SST, install the front shoe return spring and then install
the rear return spring. SST 09718−20010
6. REMOVE SHOE STRUT WITH SPRING
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P03807
HoldSST (B)
SST (A)
Turn
P08242
SST (C)
CH−10
−
CHARGING GENERATOR
1996 LAND CRUISER (RM451U)
4. REMOVE RECTIFIER HOLDER
(a) Remove the 4 screws and rectifier holder.
(b) Remove the 4 rubber insulators.
(c) Remove the seal plate.
5. REMOVE PULLEY
(a) Hold SST (A) with a torque wrench, and tighten SST (B)
clockwise to the specified torque.
SST 09820−63010
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
(b) Check that SST (A) is secured to the rotor shaft.
(c) Mount SST (C) in a vise.
(d) Install the generator to SST (C).
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P03802
CH06M−03
P03794
P03807
Hold SST (A)
SST (B)
Turn
P08242
SST (C)
CH−16
−
CHARGING GENERATOR
1996 LAND CRUISER (RM451U)
REASSEMBLY
1. PLACE RECTIFIER END FRAME ON PULLEY
2. INSTALL ROTOR TO DRIVE END FRAME
3. INSTALL RECTIFIER END FRAME
(a) Place the generator washer on the rotor.
(b) Using a 29 mm socket wrench and press, slowly press in
the rectifier end frame.
(c) Install the 4 nuts. Torque: 4.5 N·m (46 kgf·cm, 40 in.·lbf)
4. INSTALL PULLEY
(a) Install the pulley to the rotor shaft by tightening the pulley
nut by hand.
(b) Hold SST (A) with a torque wrench, and tighten SST (B)
clockwise to the specified torque.
SST 09820−63010
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
(c) Check that SST (A) is secured to the pulley shaft.
(d) Mount SST (C) in a vise.
(e) Install the generator to SST (C).
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−
DIAGNOSTICS ENGINE
DI−7
1996 LAND CRUISER (RM451U)
(10) After checking the DTC, inspect the applicable cir-
cuit.
(b) Clear the DTC.
The following actions will erase the DTCs and freezed
frame data.
(1) Operating the OBD II scan tool (complying with SAE
J1978) or TOYOTA hand−held tester to erase the
codes. (See the OBD II scan tool’ s instruction book
for operating instructions.)
(2) Disconnecting the battery terminals or EFI fuse.
NOTICE:
If the TOYOTA hand −held tester switches the ECM from
normal mode to check mode or vice −versa, or if the igni-
tion switch is turned from ON to ACC or LOCK during check
mode, the DTCs and freezed frame data will be erased.
4. FAIL−SAFE CHART
If any of the following codes is recorded, the ECM enters fail −safe mode.
DTC No.Fail−Safe OperationFail− Safe Deactivation Conditions
P0100Ignition timing fixed at 5 ° BTDC
 Injection method fixed at simultaneous injectionReturned to normal condition
P0110Intake air temp. is fixed at 20° C (68°F)Returned to normal condition
P0115Engine coolant temp. is fixed at 80 °(176°F)Returned to normal condition
P0120VTA is fixed at 0°
The following condition must be repeated at least 2 times
consecutively
When closed throttle position switch is ON:
0.1 V  VTA  0.95 V
P0135
P0141The heater circuit in witch an abnormality is detected is
turned offIgnition switch OFF
P0325
P0330Max. timing retardationIgnition switch OFF
P1300Fuel cutIGF signal is detected for 6 consective ignitions
P1605Max. timing retardationReturned to normal condition
5. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand−held tester only:
By putting the vehicle’s ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic
and sensitivity to detect open circuits is increased. This makes it easier \
to detect intermittent problems.
(1) Clear the DTC (See step 2).
(2) Set the check mode (See step 3).
(3) Perform a simulation test (See page IN−18).
(4) Check the connector and terminal (See page IN−28).
(5) Handle the connector (See page IN−28).
(6) Visual check and contact pressure (See page IN−28).
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P22487
No.1 Vehicle
Speed SensorCombination
Meter ECM
4−pulse
4−pulse
P22473
Combination Meter
3
C13 L−WL
−W8
E7 SPD ECM
5V
E1
From Cruise Control ECU
−
DIAGNOSTICS ENGINE
DI−87
1996 LAND CRUISER (RM451U)
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The vehicle speed sensor outputs a 4 − pulse signal for every revolution of the rotor shaft, which is rotated
by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectan-
gular wavefrom by the waveform shaping circuit inside the combination meter, it is then transmitted to the
ECM. The ECM determines the vehicle speed based on the frequency of thes\
e pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
No vehicle speed sensor signal to ECM under conditions (a)
and (b):
(2 trip detection logic)
(a) Park/neutral position switch is OFF.
(b) Vehicle is being driven. Open or short in No.1 vehicle speed sensor circuit
 No.1 vehicle speed sensor
 Combination meter
 ECM
WIRING DIAGRAM
DI5PN−02
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