1996 TOYOTA LAND CRUISER Position

DI−102
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
DTC P1335 Crankshaft Position Sensor Circuit Malfunction (during engine running)
CIRCUIT DESCRIPTION
Refer to DTC P0335 (Crankshaft Position Sensor ”A” Circuit Malfunction\
) on page DI−62.
DTC No.DTC Detecting ConditionTrouble Area
P1335No crankshaft position sensor signal (NE signal) to ECM with
engine speed 1,000 rpm or more
Open or short in crankshaft position sensor circuit for NE
signal
 Crankshaft position sensor for NE signal
 Starter
 ECM
WIRING DIAGRAM
See DTC P0335 (Crankshaft Position Sensor ”A” Circuit Malfunction) \
for WIRING DIAGRAM and INSPEC-
TION PROCEDURE.
DI5PR−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI−104
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
HINT:
This diagnostic chart is based on the premise that the engine is cranked normally. If the engine is not
cranked, proceed to the matrix chart of problem symptoms on page DI−19.
1 Connect TOYOTA hand −held tester and check STA signal.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn ignition switch ON and push TOYOTA hand −held tester main switch ON.
CHECK:
Read STA signal on the TOYOTA hand −held tester while starter operates.
OK:
Ignition Switch PositionONSTART
STA SignalOFFON
OK Proceed to next circuit inspection shown on matrix chart (See page DI−19 ).
NG
2 Check for open in harness and connector between ECM and starter relay (See page IN−28 ).
NG Repair or replace harness or connector.
OK
Check and replace ECM
(See page IN−28 ).
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

P22478
Battery
FL AM1
Fusible Link
1F6
B−L
2
2 2
2
3
4
AM1
R/B No.2
Junction
Connector (J4)
Y Y
IG Switch
4 2
1 B−W
B−YFuse Block
GAUGE
Y
B
B 6IH14
B−W Park/Neutral
Position Switch
3
2 G−R G−W
O
O
IH2
To A/T Indicator Light
(Combination Meter)
Starter
1
S1 E7
E7
E7
17
16
22 NSW
E1B+
E1 E1
L
2 ECM
W
EA26
B
B
B−R
65 3
2IH1
21
B−W
IH2
DI−108
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
DTC P1780 Park/Neutral Position Switch Malfunction
CIRCUIT DESCRIPTION
The park/neutral position switch goes on when the shift lever is in the N o\
r P shift position. When it goes on
terminal NSW of the ECM is grounded to body ground via the starter relay, thus the terminal NSW voltage
becomes 0 V. When the shift lever is in the D, 2, L or R position, the park/neutral\
position switch goes off,
so the voltage of ECM, terminal NSW becomes battery voltage, the voltage of the ECM internal power
source. If the shift lever is moved from the N position to the D position, this signal is used for air\
−fuel ratio
correction and for idle speed control (estimated control), etc.
DTC No.DTC Detecting ConditionTrouble Area
P1780
2 or more switches are ON simultaneously for ”N”, ”2” and ”\
L”
position (2 trip detection logic)
 Short in park/neutral position switch circuit
 Park/neutral position switch
 ECMWhen driving under conditions (a) and (b) for 30 sec. or more
the park/neutral position switch is ON (N position):
(2 trip detection logic)
(a) Vehicle speed: 70 km/h (44 mph) or more
(b) Engine speed: 1,500 − 2,500 rpm
HINT:
After confirming DTC P1780 use the T OYOTA hand−held tester to confirm the PNP switch signal from ”CUR-
RENT DATA”.
WIRING DIAGRAM
DI5PV−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

P24677
32
4
10 98 6
51
7
A00188
ON
NSW
(+)
(−)
BE6653
P24678
−
DIAGNOSTICS ENGINE
DI−109
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check park/neutral position switch.
PREPARATION:
Disconnect park/neutral position switch connector.
CHECK:
Check continuity between each terminal shown below when the
shift lever is positioned to each range.
OK:
Shift PositionTerminal No. to continuityTerminal No. to continuity
P4 − 75 − 6
R4 − 8−
N4 − 105 − 6
D4 − 9−
22 − 4−
L3 − 4−
NG Replace park/neutral position switch.
OK
2 Check voltage between terminal NSW of ECM connector and body ground.
PREPARATION:
Remove instrument panel speaker No.1 panel
(See page SF−65 ).
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminal NSW of ECM connec-
tor and body ground when the shift lever is positioned to
the following positions.
OK:
Shift lever positionP or NL, 2, D or R
Voltage0 V9 − 14 V
OK Check and replace ECM (See page IN−28 ).
NG
Check for open and short in harness and
connector between ECM and park/neutral
position switch (See page IN−28).
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

P24681
DI−11 2
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
4 Check IGN fuse from fuse block.
NG Check for short in all the harness and
components connected to IGN fuse.
OK
5 Check ignition switch.
PREPARATION:
(a) Remove instrument lower finish panel.
(b) Remove instrument cluster finish center panel No.2.
CHECK:
Check continuity between terminals.
OK:
Shift PositionTerminal No. to continuityTerminal No. to continuity
LOCK−−
ACC3 − 4−
ON2 − 3 − 46 − 11
START1 − 2 − 45 − 6 − 11
NG Replace ignition switch.
OK
Check for open and short in harness and
connector between battery and ignition
switch and ECM.
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

P22480
BatteryStarter
FL MAIN
FL AM2EFI
EFI Main Relay
IG Switch IG
ST
Park/Neutral
Position SwitchCircuit Opening
Relay
Fuel Pump Relay
Fuel Pump
From Crankshaft Position
Sensor Fuel Pump
Resistor
(STA Signal)
(NE Signal) MRLY
FC
STA
NE
Tr1
Tr2
ECM
IGN FPR
−
DIAGNOSTICS ENGINE
DI−11 5
1996 LAND CRUISER (RM451U)
Fuel Pump Control Circuit
CIRCUIT DESCRIPTION
In the diagram below, when the engine is cranked, current flows form terminal ST of the igni\
tion switch to
terminal STA of ECM (STA signal).
When the STA signal and NE signal are input to the ECM, Tr1 is turned ON, current flows to coil of the circuit
opening relay, the relay switches on, power is supplied to the fuel pump and the fuel\
pump operates.
While the NE signal is generated (engine running), the ECM keeps Tr1 ON (circuit opening relay ON) and
the fuel pump also keeps operating.
The fuel pump speed is controlled at 2 levels (high speed or low speed) b\
y the condition of the engine (start-
ing, light load, heavy load). When the engine starts (STA ON), Tr2 in the ECM is OFF, so battery voltage is
applied directry to the fuel pump. Fuel pump operates at high speed.
After the engine starts, during idling or light loads, since Tr2 goes ON, power is supplied to the fuel pump
via the fuel pump resistor.
Fuel pump operates at low speed.
DI5PY−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI5K6−01
Transmission Control
System Check SheetInspector ’s
Name
:
Customer ’s Name
Registration No.
Registration Year
Frame No.
Date Vehicle
Brought In Odometer Reading
km
mile
/ /
/ /
Date Problem
Occurred
How Often Does
Problem Occur? / /
 Continuous  Intermittent ( times a day)
Symptoms
 Vehicle does not move (  Any position  Particular position )
 No up−shift (  1st → 2nd  2nd → 3rd  3rd → O/D )
 No down−shift (  O/D → 3rd  3rd → 2nd  2nd → 1st )
 Lock−up malfunction
 Shift point too high or too low
 Harsh engagement (  N → D  Lock −up  Any drive position )
 Slip or shudder
 No kick− down
 Others
Check Item Malfunction
Indicator Lamp
DTC Check1st Time
2nd Time
Normal code  Malfunction code (Code )

Normal 
Remains ON
 Normal code  Malfunction code (Code )
DI−130
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
CUSTOMER PROBLEM ANALYSIS CHECK
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

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.
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010