Page 1435 of 3115
A18907
(64 to 88 km/h)
(56 to 72 km/h)
Idling
Ignition OFF
Warmed up3 minutes
7 minutes 40 to 55 mph
35 to 45 mph
- DIAGNOSTICSENGINE
DI-31
224 Author: Date:
2004 LAND CRUISER (RM1071U)
2. CATALYST MONITOR (O2S TYPE)
(a) Preconditions
The monitor will not run unless:
MIL is OFF.
Engine Coolant Temperature (ECT) is 75°C (167°F) or greater.
Intake Air Temperature (IAT) is -10°C (14°F) or greater
NOTICE:
The readiness test can be completed in cold ambient conditions (less than -10°C / 14°F), if the drive
pattern is repeated a second time after cycling the ignition off.
(b) Drive Pattern
(1) Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions.
(2) Drive the vehicle at 40 to 55 mph (64 to 88 km/h) for approximately for 3 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden acceleration.
If IAT is less than 10°C (50°F) when engine was started, drive the vehicle at 40 to 55 mph (64 to 88
km/h) for additional 4 minutes.
(3) Drive the vehicle at 35 to 45 mph (56 to 72 km/h) for approximately 7 minutes.
NOTICE:
Drive with smooth throttle operation and avoid sudden deceleration as much as possible with the
throttle fully closed.
(4) If readiness status does not switch to complete, make sure that the preconditions are met and
the ignition switch is turned OFF and then repeat steps (2) and (3).
(5) Release pressure in the fuel tank by removing and then reinstalling the fuel tank cap.
(6) Start the engine and immediately begin driving as directed.
Page 1436 of 3115
A18910
Idling
Ignition OFF
Warmed up Soak 15 to 50 min.
(When the readiness code or diagnostic code
is set, this test is completed.) 3,000 rpm
10 sec. DI-32
- DIAGNOSTICSENGINE
225 Author: Date:
2004 LAND CRUISER (RM1071U)
3. EVAP MONITOR (VACUUM PRESSURE MONITOR)
NOTICE:
A cold soak must be performed prior to conducting the drive pattern to complete the Internal Pres-
sure Readiness Monitor.
(a) Cold Soak Preconditions
The monitor will not run unless:
MIL is OFF
Fuel level is approximately 1/2 to 3/4
Altitude is 7,800 feet (2,400 m) or less
(b) Cold Soak Procedure
Let the vehicle cold soak for 8 hours or until the difference between IAT and ECT becomes less than
7°C (13°F)
HINT:
Examples:
Scenario 1
ECT = 24°C (75°F)
IAT = 16°C (60°F)
Difference between ECT and IAT is 8°C (15°F)
" The monitor will not run because difference between ECT and IAT is greater than 7°C (13°F)
Scenario 2
ECT = 21°C (70°F)
IAT = 20°C (68°F)
Difference between ECT and IAT is 1°C (2°F)
" The monitor will run because difference between ECT and IAT is less than 7°C (13°F)
4. EVAP MONITOR (VACUUM PRESSURE MONITOR) (CONTINUED)
Page 1437 of 3115
- DIAGNOSTICSENGINE
DI-33
226 Author: Date:
2004 LAND CRUISER (RM1071U)
(a) Preconditions
The monitor will not run unless:
MIL is OFF
Fuel level is approximately 1/2 to 3/4
Altitude is 7,800 feet (2,400 m) or less*
Engine Coolant Temperature (ECT) is between 4.4°C and 35°C (40°F and 95°F)
Intake Air Temperature (IAT) is between 4.4°C and 35°C (40°F and 95°F)
Cold Soak Procedure has been completed
Before starting the engine, the difference between ECT and IAT must be less than 7°C (13°F)
HINT:
Examples:
Scenario 1
ECT = 24°C (75°F)
IAT = 16°C (60°F)
Difference between ECT and IAT is 8°C (15°F)
" The monitor will not run because difference between ECT and IAT is greater than 7°C (13°F)
Scenario 2
ECT = 21°C (70°F)
IAT = 20°C (68°F)
Difference between ECT and IAT is 1°C (2°F)
" The monitor will run because difference between ECT and IAT is less than 7°C (13°F)
The readiness test can be completed in cold ambient conditions (less than 40°F / 4.4°C) and/or at
high altitudes (more than 7,800 feet / 2,400 m) if the drive pattern is repeated a second time after cycl-
ing the ignition off.
(b) Drive Pattern
(1) Connect the OBD II scan tool to DLC3 to check monitor status and preconditions (refer to ºaº).
(2) Release pressure in fuel tank by removing the fuel tank cap and then reinstalling it.
(3) Start the engine and allow it to idle until ECT becomes 75°C (167°F) or higher.
(4) Run the engine at 3,000 rpm for about 10 seconds.
(5) Allow the engine to idle with the A/C ON (to create slight load) for 15 to 50 minutes.
NOTICE:
If the vehicle is not equipped with A/C put a slight load on the engine by doing the following :
Securely set the parking brake.
Block the drive wheels with wheel chocks.
Allow the vehicle to idle in drive for 15 to 50 minutes.
Page 1438 of 3115
A18913
(40 km/h)
Idling
Ignition OFF (over 900 rpm)25 mph
Over 2 min.
50 sec. Over 50 sec. 50 sec.Over 40 sec. 40 sec. 40 sec.
50 sec. Once Twice 3 times 10 times DI-34
- DIAGNOSTICSENGINE
227 Author: Date:
2004 LAND CRUISER (RM1071U)
5. OXYGEN SENSOR MONITOR (FRONT AND REAR O2S SYSTEM)
(a) Preconditions
The monitor will not run unless:
MIL is OFF
(b) Drive Pattern
(1) Connect the OBD II scan tool to DLC3 to check monitor status and preconditions (refer to step
ºaº).
(2) Start the engine and allow it to idle for 2 minutes or more.
(3) Drive the vehicle at 25 mph (40 km/h) or more for at least 50 seconds.
(4) Stop the vehicle and allow the engine to idle for 40 seconds or more.
(5) Perform steps (3) and (4) ten times.
(6) Check the status of the readiness monitor on the scan tool display. If readiness status did not
switch to complete, ensure preconditions are met, turn the ignition off and then repeat steps (1)
and (5).
Page 1439 of 3115
A18915
Idling
Ignition OFF(40 km/h)25 mph
Over 2 minutes Over 500 seconds
- DIAGNOSTICSENGINE
DI-35
228 Author: Date:
2004 LAND CRUISER (RM1071U)
6. OXYGEN SENSOR HEATER MONITOR
(a) Preconditions
The monitor will not run unless:
MIL is OFF
(b) Drive Pattern
(1) Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions (refer to
step ºaº).
(2) Start the engine and allow it to idle for 500 seconds or more.
(3) Drive the vehicle at 25 mph (40 km/h) or more at least 2 minutes.
(4) Check the status of the readiness monitor on the scan tool display. If readiness status did not
switch to complete, ensure the preconditions are met, turn the ignition off and then repeat steps
(2) and (3).
Page 1441 of 3115
- DIAGNOSTICSENGINE
DI-47
240 Author: Date:
2004 LAND CRUISER (RM1071U) #1 (E5-1) - E01 (E5-7)
#2 (E5-2) - E01 (E5-7)
#3 (E5-3) - E01 (E5-7)
#4 (E5 4) E01 (E5 7)
Y - W-B
B - W-B
L - W-B
RWB
IG switch ON9 to 14 V
#4 (E5-4) - E01 (E5-7)
#5 (E5-5) - E01 (E5-7)
#6 (E6-3) - E01 (E5-7)
#7 (E7-6) - E01 (E5-7)
#8 (E7-5) - E01 (E5-7)R - W-B
G - W-B
R-L - W-B
W - W-B
B-W - W-B
IdlingPulse generation
(See page DI-167)
KNK1 (E6-1) - E1 (E7-1)B - BRMiti i d t4000 ft iPulse generation
KNK2 (E6-2) - E1 (E7-1)W - BRMaintain engine speed at 4,000 rpm after warming upPulse generation
(See page DI-186)
G2+ (E7-27) - G2- (E7-32)R - GIdliPulse generation
NE+ (E7-25) - NE- (E7-24)L - GIdlingPulse generation
(See page DI-191)
PRG (E5-34) - E1 (E7-1)L-B - BRIG switch ON9 to 14 V
CCV (E5-27) - E1 (E7-1)L-R - BRIG switch ON9 to 14 V
TBP (E9-4) - E1 (E7-1)L - BRIG switch ON, disconnect vacuum hose from VSV for pressure
switching valve9 to 14 V
PTNK (E9 21) E2 (E5 28)L B BR WIgnition switch ON2.9 to 3.7 VPTNK (E9-21) - E2 (E5-28)L-B - BR-WApply vacuum 4.0 kPa (30 mmHg, 1.18 in.Hg)Below 0.5 V
SPD (E8-17) - E1 (E7-1)V - BRIG switch ON, Rotate driving wheel slowlyPulse generation
(See page DI-274)
M+ (E7-3) - E1 (E7-1)
M- (E7-2) - E1 (E7-1)R - BR
W - BRIdlingPulse generation
(See page DI-302)
FPR (E5-33) - E1 (E7-1)G-W - BRIG switch ON0 to 3.0 V
FC (E9-10) - E1 (E7-1)B-W - BRIG switch ON9 to 14 V
IGT1 (E5-9) - E1 (E7-1)
IGT2 (E5-8) - E1 (E7-1)
IGT3 (E5-25) - E1 (E7-1)
IGT4 (E5-11) - E1 (E7-1)
IGT5 (E5-12) - E1 (E7-1)
IGT6 (E5-26) - E1 (E7-1)
IGT7 (E5-13) - E1 (E7-1)
IGT8 (E5-10) - E1 (E7-1)B - BR
R - BR
L - BR
G - BR
Y - BR
B-Y - BR
B-L - BR
L-B - BR
IdlingPulse generation
(See page DI-202)
IGF1 (E5 24) E1 (E7 1)BW BRIG switch ON4.5 to 5.5 VIGF1 (E5-24) - E1 (E7-1)
IGF2 (E5-23) - E1 (E7-1)B-W - BR
B-R - BR
IdlingPulse generation
(See page DI-202)
STP (E8 19) E1 (E7 1)GW BRBrake pedal is depressed7.5 to 14 VSTP (E8-19) - E1 (E7-1)G-W - BRBrake pedal is releasedBelow 1.5 V
ST1 (E8 12) E1 (E7 1)RG BRBrake pedal is depressedBelow 1.5 VST1- (E8-12) - E1 (E7-1)R-G - BRBrake pedal is released7.5 to 14 V
STA (E5-17) - E1 (E7-1)B-R - BRShift lever range P or N, Ignition switch START6.0 V or more
STSW (E7-12) - E1 (E7-1)B-W - BRShift lever range P or N, ignition switch START6.0 V or more
ACCR (E5-15) - E1 (E7-1)R-G - BRShift lever range P or N, ignition switch START9 to 14 V
STAR (E6-9) - E1 (E7-1)B-W - BRShift lever range P or N, ignition switch START9 to 14 V
NSW (E5 16) E1 (E7 1)BW BRIG switch ON, Other shift position in P, N9 to 14 VNSW (E5-16) - E1 (E7-1)B-W - BRIG switch ON, Shift position in P, N0 to 3.0 V
W (E9 11) E1 (E7 1)WBRIdling9 to 14 VW (E9-11) - E1 (E7-1)W - BRIG switch ONBelow 3.0 V
SIL (E9-18) - E1 (E7-1)V-W - BRDuring transmissionPulse generation
TACH (E9-5) - E1 (E7-1)B - BRIdlingPulse generation
Page 1442 of 3115
DIB5X-02
I27347
U1
Unlock Warning SWCowl Side J/B RH
KSW 3E25
R-B
R-B10
3E23
3P3
3P1
3P2
3P1
W-B W-B
W-B
2E 18
IF Set Bolt of Cowl Side J/B LH21W-BGND 14 T19
Transponder Key ECU DI-1014
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1207 Author: Date:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC B2780 Key Unlock Warning Switch Malfunction
CIRCUIT DESCRIPTION
This DTC is detected when the Transponder key ECU does not detect the key unlock warning switch ON
even with the ignition switch ON. (In normal condition, the key unlock warning switch should be ON when
the ignition switch is ON.)
DTC No.DTC Detecting ConditionTrouble Area
B2780The key unlock warning switch On is not detected when the
ignition switch is ON.Key unlock warning switch
Wire harness
WIRING DIAGRAM
Page 1444 of 3115
DI-1016
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1209 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check whether or not DTC is detected when DTC is cleared, key is inserted into
ignition key cylinder and IG SW is turned ON. (See page DI-1004).
RESULT:
OKB2780 is not output.
NGB2780 is output.
NG Replace Transponder Key ECU).
OK
No problem at this time.
It is suspected that DTC was detected for
some reason in the past.
