1996 TOYOTA LAND CRUISER Starter

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INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN−25
1996 LAND CRUISER (RM451U)
5. PROBLEM SYMPTOMS TABLE
The suspected circuits or parts for each problem symptom are shown in th\
e table below. Use this table to
troubleshoot the problem when a ”Normal” code is displayed in the \
diagnostic trouble code check but the
problem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts
should be checked.
HINT:
When the problem is not detected by the diagnostic system even though the pr\
oblem symptom is present,
it is considered that the problem is occurring outside the detection ran\
ge of the diagnostic system, or that
the problem is occurring in a system other than the diagnostic system.
Symptom
Suspected AreaSee page
Engine does not crank (Does not start)
No initial combustion (Does not start)
No complete combustion (Does not start) 1. Starter and starter relay
1. ECM power source circuit
2. Fuel pump control circuit
3. ECM
1. Starter signal circuit
2. Fuel pump control circuit 1. Fuel pump control circuit
DI−147
DI−151
IN−29
PROBLEM SYMPTOMS TABLE
1. Compression
2. Fuel pump control circuit 1. A/C signal circuit
2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit)
2. ECM power source circuit 1. Starter signal circuit
2. Fuel pump control circuit1. Starter signal circuit
2. Fuel pump control circuit
3. Compression
idling)
High engine idle speed (Poor idling) Hot engine
Cold engine (Difficult to start) Engine cranks normally (Difficult to start)
AC−88 DI−144
DI−151
EM−3 DI−151
 Problem Symptom Page
Indicates the page where the flow chart for each circuit
is located.
 Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
 Circuit or Part Name
Indicates the circuit or part which needs to be checked.
ST−2
ST−17
DI−144
DI−151
DI−144
DI−151
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AT0TB−01
Q08463
Hold Down ClampBattery
Battery Tray
Starter
Fan Shroud
Level Gauge Front Propeller Shaft
Oil Filler Pipe
 Gasket
 Hole Plug
O− Ring
Engine Under Cover Stabilizer BarCrossmember with
Transfer Under Cover
 Non− reusable Part 
 Gasket

AT
−18
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AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION UNIT
802
Author: Date:
1996 LAND CRUISER (RM451U)
AUTOMATIC TRANSMISSION UNIT
COMPONENTS
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AT0TC−01
AT−20
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AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION UNIT
1996 LAND CRUISER (RM451U)
REMOVAL
1. REMOVE BATTERY AND BATTERY TRAY
2. REMOVE 2 BOLTS AND LOOSEN FAN SHROUD OF COOLING FAN TO AVOID DAMAGE TO FAN
Torque: 4.9 N·m (50 kgf·cm, 43 in.·lbf)
3. DISCONNECT THROTTLE CABLE
(a) Loosen the adjusting nut and disconnect the cable from the bracket.
(b) Disconnect the throttle cable from the linkage.
4. REMOVE UPPER SIDE STARTER MOUNTING BOLT Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
5. REMOVE TRANSMISSION SELECT L EVER AND
TRANSFER SHIFT LEVER
(a) Remove the clip, washer and wave washer, and discon- nect the transfer shift lever link.
(b) Remove the nut and washer, and disconnect the trans- mission select lever link.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
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Q07409
AT−24
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AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION UNIT
1996 LAND CRUISER (RM451U)
(d) Remove the 4 nuts and 2 gaskets, shift the front exhaust
pipe assembly to the vehicle’s outside.
Torque: 62 N·m (630 kgf·cm, 46 ft·lbf)
HINT:
At the time of installation, replace the used gaskets and nuts
with new gaskets and nuts.
15. REMOVE STARTER
(a) Remove the nut and disconnect the terminal and connec-
tor.
(b) Remove the lower side mounting bolt and starter. Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
16. REMOVE CROSSMEMBER
(a) Support the transmission with a transmission jack.
(b) Remove the 8 bolts and 2 nuts, and then remove the crossmember.
Torque:
Bolt: 61 N·m (620 kgf·cm, 45 ft·lbf)
Nut: 74 N·m (750 kgf·cm, 54 ft·lbf)
17. REMOVE TRANSMISSION
(a) Lower the rear end of the transmission.
NOTICE:
Be careful not to damage the cooling fan, brake booster
and brake line.
(b) Separate the wire harness from the transmission and transfer.
(c) Remove the oil cooler pipe mounting bolts from the torque
converter clutch housing, and then disconnect the 2 oil
cooler pipes from the elbows.
(d) Remove the 10 bolts and transmission. Torque: 72 N·m (730 kgf·cm, 53 ft·lbf)
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DI−12
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DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
(b) TOYOTA Enhanced Signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 2.0 − 3.5 ms
IAC STEP POSIntake Air Control Valve step position
Opening position step motor type IAC valveIdling: 10 − 50 step
STARTER SIGStarter SignalCranking: ON
CTP SWClosed Throttle Position Switch SignalThrottle Fully Closed: ON
A/C SIGA/C Switch SignalA/C ON: ON
PNP SWPark/Neutral Position Switch SignalP or N Position: ON
STOP LIGHT SWStop Light Switch SignalStop light switch ON: ON
FC IDLFuel Cut Idle: Fuel cut when throttle valve fully
closed, during decelerationFuel cut operating: ON
FC TAUFuel Cut TAU: Fuel cut during very light loadFuel cut operating: ON
CYL#1 − CYL#6Ratio of revolution variation for each cylinder
when variation is large0%
IGNITIONIgnition rate for all cylinders every 1,000 revolu-
tions0 − 3,000 rpm
EGRT GASEGR Gas Temp. Sensor V alueEGR not operating: Temp. between intake air
temp. and engine coolant temp.
EGR SYSTEMEGR System Operating ConditionIdling: OFF
FUEL PRES UP VSVFuel Pressure Up VSV SignalHigh temp. restarting: ON
FUEL PUMPFuel Pump SignalIdling: ON
TOTAL FT B1Total Fuel Trim Bank 1: Average value for fuel
trim system of bank 1Idling: 0.8 − 1.2 V
O2 LR B1, S1
Oxygen Sensor Lean Rich Bank 1, Sensor 1
Response time for oxygen sensor output to
switch from lean to rich
Idling after warmed up: 0 − 1,000 msec.
O2 RL B1, S1
Oxygen Sensor Rich Lean Bank 1, Sensor 1
Response time for oxygen sensor output to
switch from rich to lean
Idling after warmed up: 0 − 1,000 msec.
∗: If no conditions are specifically stated for ”ldling”, it means t\
he shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
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DI−14
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DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
DTC No.
(See Page)
Detection ItemTrouble AreaMILMemory
P0171
( DI−51 )System too Lean
(Fuel T rim)
Air intake (hose loose)
 Fuel line pressure, leak
 Injector blockage
 Heated oxygen sensor malfunction
 Mass air flow meter
 Engine coolant temp. sensor
 *1
P0172
( DI−51 )System too Rich
(Fuel T rim)
Fuel line pressure
 Injector leak, blockage
 Heated oxygen sensor malfunction
 Mass air flow meter
 Engine coolant temp. sensor
 *1
P0300
( DI−54 )Random/Multiple Cylinder
Misfire DetectedIgnition system
 Injector
 Fuel line pressure
 EGR
 Compression pressure
 Valve clearance not to specification
 Valve timing
 Mass air flow meter
 Engine coolant temp. sensor
 *2
P0301
P0302
P0303
P0304
P0305
P0306
( DI−54 )Misfire Detected
− Cylinder 1
− Cylinder 2
− Cylinder 3
− Cylinder 4
− Cylinder 5
− Cylinder 6
P0325
( DI−59 )Knock Sensor 1 Circuit
MalfunctionOpen or short in knock sensor 1 circuit
 Knock sensor 1 (looseness)
 ECM
 *1
P0330
( DI−59 )Knock Sensor 2 Circuit
MalfunctionOpen or short in knock sensor 2 circuit
 Knock sensor 2 (looseness)
 ECM
 *1
P0335
( DI−62 )Crankshaft Position Sensor
”A” Circuit Malfunction
Open or short in crankshaft position sensor circuit for NE sig-
nal
 Crankshaft position sensor for NE signal
 Starter
 ECM
 *1
P0340
( DI−65 )Camshaft Position Sensor
Circuit MalfunctionOpen or short in camshaft position sensor circuit
 Camshaft position sensor
 ECM
 *1
P0385
( DI−67 )Crankshaft Position Sensor
”B” Circuit Malfunction
Open or short in crankshaft position sensor circuit for NE2
signal
 Crankshaft position sensor for NE2 signal
 ECM
 *1
P0401
( DI−69 )Exhaust Gas Recirculation
Flow Insufficient Detected
EGR valve stuck closed
 Short in VSV circuit for EGR
 Open in EGR gas temp. sensor circuit
 EGR hose disconnected
 ECM
 *1
P0402
( DI−80 )Exhaust Gas Recirculation
Flow Excessive Detected
EGR valve stuck open
 EGR VSV open malfunction
 Open in VSV circuit for EGR
 Short in EGR gas temp. sensor circuit
 ECM
 *1
*1: MIL lights up
*2: MIL lights up or blinking
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−
DIAGNOSTICS ENGINE
DI−15
1996 LAND CRUISER (RM451U)
DTC No.
(See Page)
Detection ItemTrouble Area*MILMemory
P0420
( DI−84 )Catalyst System Efficiency
Below Threshold Three− way catalytic convertor
 Open or short in heated oxygen sensor circuit
 Heated oxygen sensor

P0500
( DI−87 )Vehicle Speed Sensor
Malfunction
Combination meter
 Open or short in speed sensor circuit
 ECM
 Vehicle speed sensor

P0505
( DI−89 )Idle Control System
Malfunction
IAC valve is stuck or closed
 Open or short in IAC valve circuit
 Open or short A/C signal circuit
 Air intake (hose loose)

P0510
( DI−93 )Closed Throttle Position
Switch MalfunctionOpen in closed throttle position switch circuit
 Closed throttle position switch
 ECM

P1300
( DI−97 )Igniter Circuit Malfunction
Open or short in IGF or IGT circuit from igniter to ECM
 Igniter
 ECM

P1335
( DI−102 )Crankshaft Position Sensor
Circuit Malfunction
(during engine running)
Open or short in crankshaft position sensor circuit for NE sig-
nal
 Crankshaft position sensor for NE signal
 Starter
 ECM
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P1500
( DI−103 )Stater signal circuit MalfunctionOpen or short in starter signal circuit
 ECM−
P1600
( DI−105 )ECM BATT MalfunctionOpen in back up power source circuit
 ECM
P1605
( DI−107 )Knock Control CPU MalfunctionECM
P1780
( DI−108 )Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
 Park/neutral position switch
 ECM

*: −  MIL does not light up,   MIL lights up
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DI5OY−03
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DIAGNOSTICS ENGINE
DI−19
1996 LAND CRUISER (RM451U)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the DTC check and the problem \
still can not be confirmed
in the basic inspection, then proceed to this step and perform troubleshooting according to the numbered
order given in the table below.
SymptomSuspect AreaSee page
Engine does not crank (Does not start)1. Starting systemST−16
No initial combustion (Does not start)1. ECM power source circuit
2. Fuel pump control circuitDI−11 0
DI−11 5
No complete combustion (Does not start)1. Fuel pump control circuitDI−11 5
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. Fuel pump control circuit
3. CompressionDI−103
DI−11 5 EM−3
Cold engine (Difficult to start)1. Starter signal circuit
2. Fuel pump control circuitDI−103DI−11 5
Hot engine (Difficult to start)
1. Starter signal circuit
2. Fuel pressure control circuit
3. Fuel pump control circuitDI−103
DI−125DI−11 5
High engine idle speed (Poor idling)1. A/C signal circuit
2. ECM power source circuitAC−5
DI−11 0
Low engine idle speed (Poor idling)1. A/C signal circuit
2. Fuel pump control circuitAC−5
DI−11 5
Rough idling (Poor idling)1. Compression
2. Fuel pump control circuitEM−3
DI−11 5
Hunting (Poor idling)1. ECM power source circuit
2. Fuel pump control circuitDI−11 0
DI−11 5
Hesitation/Poor acceleration (Poor driveability)1. Fuel pump control circuit
2. A/T faultyDI−11 5
DI−147
Surging (Poor driveability)1. Fuel pump control circuitDI−11 5
Soon after starting (Engine stall)1. Fuel pump control circuitDI−11 5
During A/C operation (Engine stall)1. A/C signal circuit
2. Engine control module (ECM)AC−5
IN−18
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