fuse TOYOTA LAND CRUISER 1998 Factory Manual PDF
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 1027 of 3115
F06425
Hand-held tester
DLC3
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-363
556 Author: Date:
2. Normal Mode:
DTC CHECK
NOTICE:
Hand-held tester only:
When the diagnostic system is switched from the normal
mode to the check mode, all the DTCs and freeze frame
data recorded in the normal mode will be erased. So before
switching modes, always check the DTCs and freeze frame
data, and note them down.
(a) Checking DTCs using the OBD II scan tool or hand-held
tester.
(1) Connect the OBD II scan tool or hand-held tester
to DLC3.
(2) Turn the ignition switch ON.
(3) Use the OBD II scan tool or hand-held tester to
check the DTCs and freeze frame data and note
them down (For operating instructions, see the
OBD II scan tool's instruction book).
(4) See page DI-381 to confirm the details of the
DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding hand-held tester) to check the DTCs, use the nor-
mal mode. For codes on the DTCs chart subject to º2 trip
detection logicº, turn the ignition switch OFF after the
symptom is simulated once. Then repeat the simulation
process again. When the problem has been simulated
twice, the MIL is indicated on the instrument panel and
DTCs are recorded in the ECM.
(b) When using the OBD II scan tool or hand-held tester:
Clearing the DTCs.
(1) Connect the OBD II scan tool or hand-held tester
to DLC3.
(2) Turn the ignition switch ON.
(3) When operating an OBD II scan tool (complying
with SAE J1978) or hand-held tester to erase the
codes, the DTCs and freeze frame data will be
erased. (See the OBD II scan tool's instruction book
for operating instructions.)
(c) When not using the OBD II scan tool or hand-held tester:
Clearing the DTCs.
(1) Disconnecting the battery terminal or remove the
EFI and ETCS fuse from engine room J/B for 60 se-
conds or more.
Page 1029 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-365
558 Author: Date:
(3) When operating an OBD II scan tool (complying
with SAE J1978) or hand-held tester to erase the
codes, the DTCs and freeze frame data will be
erased. (See the OBD II scan tool's instruction book
for operating instructions.)
(c) When not using the OBD II scan tool or hand-held tester:
Clearing the DTCs.
(1) Disconnecting the battery terminal or remove the
EFI and ETCS fuse from engine room J/B for 60 se-
conds or more.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the OBD II 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 II 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
STOP LIGHT SWStop light SW Status/
ON or OFFBrake Pedal is depressed: ON
Brake Pedal is released: OFFu
SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th or 5th
Shift Lever Position is;
L: 1st
2: 1st or 2nd
3: 1st, 2nd or 3rd
4: 1st, 2nd, 3rd or 4th
D: 1st, 2nd, 3rd, 4th or 5th
u
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: OFF
DRIVEPNP SW Status/
ON or OFFShift lever position is;
D and 4: ON
Except D and 4: OFF
Th hift l iti d th
4th/DRIVEPNP SW Status/
ON or OFFShift lever position is;
4: ON
Except 4: OFFThe shift lever position and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
3RDPNP SW Status/
ON or OFFShift lever position is;
3: ON
Except 3: OFFcable adjustment.
2NDPNP SW Status/
ON or OFFShift lever position is;
2 and L: ON
Except 2 and L: OFF
LOWPNP SW Status/
ON or OFFShift lever position is;
L: ON
Except L: OFF
LOCK UP SOLLock Up Solenoid Status/
ON or OFFLock Up: ON
Except Lock Up: OFFu
Page 1066 of 3115
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-993
1186 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0571/52 Brake Switch ºAº Circuit
CIRCUIT DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives
this signal, it cancels the cruise control.
A fail-safe function is provided so that the cancel functions normally, even if there is a malfunction in the stop
light signal circuit.
The cancel condition is that battery positive voltage is supplied to terminal STP.
When the brake is on, battery positive voltage is normally applied through the STOP fuse and stop light
switch to terminal STP of the ECM, and the ECM turns the cruise control OFF.
If the harness connected to terminal STP has an open circuit, terminal STP will have battery positive voltage
and the cruise control will be turned OFF.
DTC No.Detection ItemTrouble Area
P0571/52Stop light switch circuit.
Stop light switch
Harness or connector between ECM and stop light switch
circuit
ECM
DIB6A-01
Page 1075 of 3115
DI3CG-08
I25789
Cruise main SWECM
Stop Light SW
Engine Room R/B
AM2 Fuse
Fusible Link Block
Cowl Side J/B LH
STOP FuseCombination Meter Assy
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-989
1182 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 1078 of 3115
I24672
Hand-held tester
DLC3
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-983
1176 Author: Date:
2004 LAND CRUISER (RM1071U)
2. USING HAND-HELD TESTER
(a) Hook up the hand-held tester to the DLC3.
(b) Monitor the ECU data by following the prompts on the tes-
ter screen.
HINT:
Hand-held tester has a ºSnapshotº function which records the
monitored data.
Please refer to the hand-held tester operator's manual for fur-
ther details.
3. DTC CLEARANCE
(a) The following actions will erase the DTCs and freeze
frame data.
(1) Operating the hand-held tester to erase the codes
(See the hand-held tester instruction book for oper-
ating instructions.).
(2) Disconnecting the battery terminals or EFI fuse.
(b) After completing repairs, the DTC retained in memory can
be cleared by removing the EFI fuse for 10 seconds or
more with the ignition switch off.
(c) Check that the normal code is displayed after connecting
the fuse.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the 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 of the method to shorten the labor
time.
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic Note
VEHICLE SPD
Vehicle speed/
min.: 0 km/h (0 mph)max.: 255
km/h (158 mph)
Actual vehicle speed-
MEMORY SPD
Vehicle speed/
min.: 0 km/h (0 mph)max.: 255
km/h (158 mph)
Actual vehicle speed-
THROTTLE
Throttle operating angle/
min.: 0 km/h (0 mph)max.: 125
km/h ( mph)
Actual vehicle speed-
CRUISE CONTROLCruise controlON: Cruise control is SET
OFF: Cruise control is UNSET-
MAIN SW (MAIN)Main switch
(Main CPU)
ON: Main switch (Main CPU) is
SET
OFF: Main switch (Main CPU) is
UNSET
-
Page 1088 of 3115
A19978
IGN Cowl Side
J/B RH:
A19521A19629
MREL(+)
ECM ConnectorE9
DI-348
- DIAGNOSTICSENGINE
541 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check IGN fuse.
PREPARATION:
Remove the IGN fuse from the cowl side J/B RH.
CHECK:
Check the continuity of the IGN fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to IGN fuse.
OK
5 Check ignition switch (See page BE-29).
NG Replace ignition switch.
OK
Check and repair harness and connector be-
tween battery and ignition switch, and igni-
tion switch and ECM
(See page IN-36).
6 Check voltage between terminal MREL of ECM connector and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal MREL of the ECM con-
nector and body ground.
OK:
Voltage: 9 to 14 V
NG Replace ECM (See page SF-60).
OK
Page 1089 of 3115
A19976
Engine Room J/B:
EFI or ECD No. 1 Fuse
- DIAGNOSTICSENGINE
DI-349
542 Author: Date:
2004 LAND CRUISER (RM1071U)
7 Check EFI or ECD No. 1 fuse of engine room J/B.
PREPARATION:
Remove the EFI or ECD No. 1 fuse from the engine room J/B.
CHECK:
Check continuity of EFI or ECD No. 1 fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to EFI or ECD No. 1 fuse.
OK
8 Check EFI or ECD relay (See page SF-38).
NG Replace EFI or ECD relay.
OK
9 Check for open and short in harness and connector between terminal MREL of
ECM and body ground (See page
IN-36).
NG Repair or replace harness or connector.
OK
Check and repair harness or connector be-
tween EFI or ECD No. 1 fuse and battery
(See page
IN-36).
Page 1099 of 3115
P20302
FI7210
A00798
Atmosphere
Housing
Platinum Electrode
Solid Electrolyte
(Zirconia Element)
Platinum Electrode
Heater
Coating (Ceramic)
Exhaust Gas CoverIdeal Air-Fuel Mixture
Output Voltage
Richer - Air Fuel Ratio - Leaner
A21040
Reference(Bank 1 Sensor 1 System Drawing) :
ECM
EFI or ECD Relay
EFI or ECD
Fuse No. 1 From
Battery
GroundOX1A
MREL HT1A
Duty
Control Heater
Sensor Heated Oxygen Sensor
EFI or ECD
Fuse No. 2
E2 DI-50
- DIAGNOSTICSENGINE
243 Author: Date:
CIRCUIT DESCRIPTION
To obtain a high purification rate for the CO, HC and NOx components of the exhaust gas, a three-way cata-
lytic converter is used, but for the most efficient use of the three-way catalytic converter, the air-fuel ratio
must be precisely controlled so that it is always close to the stoichiometric air-fuel ratio.
The heated oxygen sensor has the characteristic which its output voltage changes suddenly in the vicinity
of the stoichiometric air-fuel ratio. This characteristic is used to detect the oxygen concentration in the ex-
haust gas and provide the ECM with feedback to control the air-fuel ratio.
When the air-fuel ratio becomes LEAN, the oxygen concentration in the exhaust increases and the heated
oxygen sensor informs the ECM of the LEAN condition (low voltage, i.e. less than 0.45 V).
When the air-fuel ratio is RICHER than the stoichiometric air-fuel ratio, the oxygen concentration in the ex-
haust gas is reduced and the heated oxygen sensor informs the ECM of the RICH condition (high voltage,
i.e. more than 0.45 V). The ECM judges by the voltage output from the heated oxygen sensor whether the
air-fuel ratio is RICH or LEAN and controls the injection time accordingly. However, if malfunction of the
heated oxygen sensor causes output of abnormal voltage, this disables the ECM for performing an accurate
air-fuel ratio control. The heated oxygen sensors include a heater which heats the zirconia element. The
heater is controlled by the ECM. When the intake air volume is low (the temperature of the exhaust gas is
low) current flows to the heater to heat the sensor for accurate oxygen concentration detection.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current through the heater. The heated
oxygen sensor heater circuit uses a relay on the B+ side of the circuit.
Page 1112 of 3115
A20872
Cowl Side J/B LH:
EFI or ECD
No. 2 Fuse
A21226
Wire Harness Side:
Mass Air Flow Meter Connector
M1
+B
A20871
Engine Room J/B:
EFI or ECD
Relay
- DIAGNOSTICSENGINE
DI-63
256 Author: Date:
2004 LAND CRUISER (RM1071U)
5 Check for open and short in harness and connector between mass air flow meter
and EFI or ECD relay.
Check EFI or ECD No. 2 fuse:
PREPARATION:
Remove the EFI or ECD No. 2 fuse from the cowl side J/B LH.
CHECK:
Check for continuity in the EFI or ECD No. 2 fuse.
OK:
Continuity
Check harness and connector:
PREPARATION:
(a) Install the EFI or ECD No. 2 fuse.
(b) Disconnect the M1 mass air flow meter connector.
(c) Remove the EFI or ECD relay from the engine room R/B.
CHECK:
Check the resistance between the wire harness side connec-
tors.
OK:
Tester ConnectionSpecified Condition
+B (M1-3) - Engine Room J/B (EFI or
ECD relay terminal 1)Below 1 W
+B (M1-3) or Engine room J/B (EFI or
ECD relay terminal 1) -
Body ground
10 kW or higher
NG Repair or replace harness or connector.
OK
Check ECM power source circuit
(See page DI-345).
Page 1164 of 3115
A21040
Reference (Bank 1 Sensor 1 System Drawing)
From
BatteryEFI or ECD
No. 1 FuseEFI or ECD
RelayEFI or ECD
No. 2 FuseHeater Oxygen
Sensor
Heater
SensorHT1A
OX1A
E2
MRELECM
- DIAGNOSTICSENGINE
DI-1 15
308 Author: Date:
2004 LAND CRUISER (RM1071U)
NG Repair or replace harness or connector.
OK
6 Check air induction system (See page SF-1).
CHECK:
Check the air induction system for vacuum leaks.
NG Repair or replace
air induction system.
OK
7 Check fuel pressure (See page SF-7).
CHECK:
Check the fuel pressure (high or low pressure).
NG Check and repair fuel pump, pressure regulator,
fuel pipe line and filter (See page SF-1).
OK