TOYOTA LAND CRUISER 1998 Factory Repair Manual

D12773D13182
ECM
TFN E8
IU1 Combination Meter
19
SB
8Cowl Side J/B LH
EB1
D6
Detection SW
(Transfer Neutral Position)
W-B Y-G
1 2SBBJ/B No.4
B29
12 3
4F 4C 9
C15
C1520
5
EB1 W-B Y-GY-G1118
E8
E7 P-B 24 66
2Q2E
38 39
6D
6D J/B No. 6MPX1 MPX2
EC Y-G 10
If1 DI-500
- DIAGNOSTICSAUTOMATIC TRANSMISSION
693 Author
: Date
:
2004 LAND CRUISER (RM1071U)
A/T. P. (Automatic Transmission Parking) Indicator Circuit
CIRCUIT DESCRIPTION
The propeller shaft and wheels are free even when the transmission shift lever is set to P as long as the
transfer shift lever is in Neutral position. The A/T.P. indicator light lights up to warn the driver that the propeller
shaft and wheels are not locked.
If the A/T.P. indicator light goes on, the transfer shift lever should be shifted to the positions other than N
position.
WIRING DIAGRAM
DI3C7-07

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-501
694 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check park/neutral position switch (See page DI-402).
NG Replace the park/neutral position switch.
OK
2 Check transfer neutral position switch (See page DI-457).
NG Replace the transfer neutral position switch.
OK
3 Check harness and connector between ECM and transfer neutral position
switch, transfer neutral position switch and body ground (See page IN-36).
NG Repair or replace the harness or connector.
OK
Proceed to next circuit inspection shown on
matrix chart (See page DI-396).

DIC2Y-01
DI-402
- DIAGNOSTICSAUTOMATIC TRANSMISSION
595 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC P0705 Transmission Range Sensor Circuit Mal-
function (PRNDL Input)
DTC P0850 Park/Neutral Switch Input Circuit
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0705
(2-trip detection logic)

All switches are OFF simultaneously for P, R, N, D, 3 and 2
positions.

2 or more switches are ON simultaneously for P, R, N, (D 4),
3 and (2 L) positions.

Short in park/neutral position switch circuit
P k/ t l iti it h
P0850
Park/neutral position switch remaines ON (P, N position) during
driving under conditions (a) and (b) for 30 sec. (2-trip detection
logic)
(a) Vehicle speed: 70 km/h (44 mph) or more
(b) Engine speed: 1,500 - 2,500 rpm
Park/neutral position switch

ECM
MONITOR DESCRIPTION
The park/neutral position switch detects the shift lever position and sends a signal to the ECM.
For security, the park/neutral position switch detects the shift lever position so that engine can be started
only when the vehicle is in P or N shift position.
When the park/neutral position switch sends more than one signal at a time from switch positions P, R, N
or D, the ECM interprets this as a fault in the switch. The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
P0705:
Related DTCsP0705Park/neutral position switch/Verify switch input
Required sensors/ComponentsPark/neutral position switch
Frequency of operationContinuous
DtiCondition (A), (B) and (D)2 sec.DurationCondition (C)60 sec.
MIL operation2 driving cycle
Sequence of operationNone

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-403
596 Author
: Date
:
2004 LAND CRUISER (RM1071U)
P0850:
Related DTCsP0850Park/neutral position switch/Verify switch cycling
Rid /C tMainPark/neutral position switchRequired sensors/ComponentsSubCrankshaft position sensor (NE), MAF meter
Frequency of operationContinuous
Duration30 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
P0705:
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Ignition switchON
Battery voltage10.5 V or more
P0850:
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Vehicle speed70 km/h (43 mph) or more-
Engine speed1,500 rpm or more2,500 rpm or less
Intake air amount per revolution0.9 g/rev. or more-

DI-404
- DIAGNOSTICSAUTOMATIC TRANSMISSION
597 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
P0705:
Detection criteriaThreshold
One of the following conditions is met: Condition (A), (B), (C) or (D)
Condition (A)
Number of the following signal input at the same time2 or more
P switch
N switch
R switchON D switchON
3 switch
2 switch
Condition (B)
Number of the following signal input at the same time2 or more
NSW switch
R switch
D switchON
3 switch
ON
2 switch
Condition (C)
All of following conditions are met
P switch
N switch
NSW switch
R switchOFF
D switch
OFF
3 switch
2 switch
Condition (D)
Both (i) and (ii) are met
(i) One of followings is met
NSW switch
P switchON N switchON
R switch
(ii) One of followings is met
4 switchON L switchON
P0850:
Detection criteriaThreshold
NSW signalON

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-405
598 Author
: Date
:
2004 LAND CRUISER (RM1071U)
COMPONENT OPERATING RANGE
P0705:
ParameterStandard value
Park/neutral position switchThe park/neutral position switch sends only one signal to the ECM.
P0850:
ParameterStandard value
Park/neutral position switchThe park/neutral position switch is OFF when avobe condition.

D12758
B-RB-W
B-W
2 391
IG1 No. 3 Relay
STAR To Starter Relay
A
7
39 SB LL2L DL7
R-LG-W
GAUGE2If1
ALT
Battery1
2C2EI18
Ignition SW
B-R 12 IN2
IG1 1310
J/B No. 6
3P
3QSB
3C6D
3M4
4 5
2 4
2Q6
Ib2185C
GPECM
E6
E5
E9
E8R
D
2 N NSW
Shift Lock Control ECU
6
B-G5D
2
6C 8
6
II 109
R-B
AM111
20
9 16
17 J17
J/C
33M
3M
3M 3P
3P
3P
3E
2E6C6D 6D
AM137 77
1Cowl Side J/B LH
L-B
2 J/B No. 2J/B No. 3 FL Block
1
1
F16 F17B-G141
3 Cowl Side J/B RH
G-R R-L G-B G-Y
A48A48 A48 A48 R-L 14R-L
3
RBNL RL PL
1
G-BE8 E8E8 E9
3 1913
5
6 11
12
13
34
17
27
28
30
20
16 6D6D6D 6D
6C 6C 6C6C 6C 6C 6CA A
B-W
69 P1
Park/Neutral Position SW
G-Y G-R To Body ECUG-W
1
G-W
IX1
1
R-B R-BG-W
G
G-B G-Y G-R
R-L
G-R8
23
1 3
5L
4 E8E8 G-W J/B No. 5
NSSD
NSSL
AT L
AT 41
6
12
8G-B G-Y NP
To ABS & BA &
TRAC & VSC ECU
DI-406
- DIAGNOSTICSAUTOMATIC TRANSMISSION
599 Author
: Date
:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM

D06561
1
6 7 82 3 4 5
9
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-407
600 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the OBD ll scan tool or Hand-held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the OBD ll scan tool or Hand-held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of OBD ll scan tool or Hand-held tester.
(f) Select the item º/DIAGNOSIS/ENHANCED OBD ll/DATA LIST/ALL (or ATM)º.
(g) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
PNP SW [NSW]PNP SW Status/
ON or OFFShift lever position is;
P or N: ON
Except P or N: OFF
REVERSEPNP SW Status/
ON or OFFShift lever position is;
R: ON
Except R: OFFThe shift lever position and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
DRIVEPNP SW Status/
ON or OFFShift lever position is;
D and 4: ON
Except D and 4: OFFcable adjustment.
1 Check park/neutral position switch.
PREPARATION:
(a) Jack up the vehicle.
(b) Disconnect the park/neutral position switch connector.
CHECK:
Check continuity between each terminal shown below when the
shift lever is moved to each position.
OK:
Shift positionTerminal No. to continuityTerminal No. to continuity
P1 - 36 - 9
R2 - 3-
N3 - 56 - 9
D, 43 - 7-
33 - 4-
2, L3 - 8-
NG Replace park/neutral position switch
(See page AT-7).
OK

D12645
NSSD
AT 4 NSSL
AT L
DI-408
- DIAGNOSTICSAUTOMATIC TRANSMISSION
601 Author
: Date
:
2004 LAND CRUISER (RM1071U)
2 Check transmission control switch.
PREPARATION:
(a) Connect the park/neutral position switch connector.
(b) Disconnect the shift lock control computer connector
(transmission control switch).
CHECK:
Check continuity between each terminal of shift lock control
computer (transmission control switch).
OK:
Shift positionTester connectionSpecified valve
D1 8 (NSSD AT4)No continuity
41 - 8 (NSSD - AT4)Continuity
26 12 (NSSL ATL)No continuity
L6 - 12 (NSSL - ATL)Continuity
NG Replace the transmission control switch
(See page AT-20).
OK

D11591
ON
E1(-)P(+)
R(+)
3(+)N(+) L(+)
4(+)D(+)
2(+)
NSW(+)
E5E6E7E8E9
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-409
602 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Measure voltage between each terminals of NSW, P, R, N, D, 4, 3, 2, L and E1 of
ECM.
PREPARATION:
(a) Connect the shift lock control computer connector (trans-
mission control switch).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between each terminals NSW, P, R, N, D, 4,
3, 2, L and E1 of ECM when the shift lever is shifted to the follow-
ing positions.
OK:
Tester connectionConditionSpecified condition
NSW B d dShift lever position: P and NBelow 1 VNSW - Body groundShift lever position: Except P and NBattery voltage
P- Body groundShift lever position: PBattery voltage
R - Body groundShift lever position: RBattery voltage*
N - Body groundShift lever position: NBattery voltage
D - Body groundShift lever position: D and 4Battery voltage
4 - Body groundShift lever position: 4Battery voltage
3 - Body groundShift lever position: 3Battery voltage
2 - Body groundShift lever position: 2 and LBattery voltage
L - Body groundShift lever position: LBattery voltage
HINT:
*: The voltage will drop slightly due to lighting up of the back up
light.
OK Check and replace the ECM (See page IN-36).
NG
Repair or replace the harness or connector
(See page IN-36).