TOYOTA LAND CRUISER 1998 Factory Repair Manual
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 1443 of 3115
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-1015
1208 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
In case of using the hand-held tester, start the inspection from step 1 and in case of not using the hand-held
tester, start from step 2.
1 Check key unlock warning switch using hand-held tester.
PREPARATION:
Connect the hand-held tester to the DLC3.
CHECK:
Check the key unlock warning switch using DATA LIST.
OK Go to step 4.
NG
2 Check key unlock warning switch (See page BE-29).
NG Replace the key unlock warning switch.
OK
3 Check wire harness and connector between key unlock warning switch and
transponder key ECU (See page IN-36).
NG Repair or replace wire harness or connector.
OK
Replace transponder key ECU.
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.
Page 1445 of 3115
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-1017
1210 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B2784 TRANSPONDER KEY COIL MALFUNCTION
CIRCUIT DESCRIPTION
This DTC is output when short or open of the key coil built in the transponder key amplifier is detected.
DTC No.DTC Detecting ConditionTrouble Area
B2784Transponder key coil malfunctionTransponder key amplifier with coil
INSPECTION PROCEDURE
Replace key.
DIB5Y-01
Page 1446 of 3115
DI1AK-22
ENGINE IMMOBILISER Check SheetInspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration YearRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
Engine does not start.
Check ItemMalfunction
Indicator LampNormal
Remains ON Does not Light Up
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-1003
1196 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1447 of 3115
DI1AM-29
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-1007
1200 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
(SEE PAGE)Circuit InspectionTrouble Area
B2780
(DI-1014)Key unlock warning switch malfunctionKey unlock warning switch
Wire harness
B2784
(DI-1017)Transponder key coil malfunctionTransponder key amplifier with coil
B2793
(DI-1018)Transponder chip malfunctionKey
B2794
(DI-1019)Unmatched encryption codeKey
Transponder key amplifier
B2795
(DI-1020)Unmatched key codeKey
Unregistered key inserted before
B2796
(DI-1021)No communication in immobiliser system
Key
Transponder key amplifier with coil
Wire harness
Transponder key ECU
B2797
(DI-1023)Communication malfunction No.1
Key
Wire harness
Transponder key amplifier with coil
Transponder key ECU
B2798
(DI-1026)Communication malfunction No.2
Key
Transponder key amplifier with coil
Wire harness
Transponder key ECU
B2799/99
(DI-1026)Engine immobiliser system malfunction
Wire harness
Transponder key ECU
ECM
HINT:
To reduce the unnecessary exchange of Transponder key ECU, check that a trouble occurs with the original
Transponder key ECU at the time of exchanging Transponder key ECU and the trouble will disappear with
a new Transponder key ECU.
Page 1448 of 3115
DI1AJ-40
Vehicle Brought to Workshop
Customer Problem Analysis
Check and Clear DTC (Pre check)Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
Symptom
does not occur
Symptom
occurs
DTC Check
Circuit Inspection and Part Inspection
DTC ChartMalfunction codeProblem Symptoms Table
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
8
9
10
Step 2, 5 :Diagnostic steps permitting the use of the
hand-held tester.
P. DI-1003
P. DI-1004
P. IN-26
P. DI-1013 P. DI-1004
P. DI-1007
P. DI-1014 - DI-1036 DI-1002
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1195 Author: Date:
2004 LAND CRUISER (RM1071U)
ENGINE IMMOBILISER SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following pages.
Page 1449 of 3115
DI3CE-03
I26015
Cowl Side J/B LH
IGN FuseECM Engine Room R/B
EFI Fuse
DLC3
Transponder Key
Amprifier w/coil
Transponder Key ECU DI-1008
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1201 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION
Page 1450 of 3115
I24672
DLC3
Hand-held tester
DI1AL-28
A04550
DLC3
10 11 12 13 14 15 16 12345678
9
DI-1004
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1197 Author: Date:
2004 LAND CRUISER (RM1071U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of immobiliser on this vehicle.
Data of the immobiliser or DTC can be read from DLC3 of
the vehicle. When a trouble occurs on immobiliser, MIL
does not light up but DTC inspection is performed.
Therefore when there seems to be a trouble on immobilis-
er, use hand-held tester or SST to check and trouble-
shoot it.
(b) Inspect the DLC3.
The vehicle's ECM uses ISO 9141-2 for communication.
The terminal arrangement of DLC3 complies with
SAEJ1962 and matches the ISO 9141-2 format.
Tester connectionconditionSpecified condition
7 (Bus Line) - 5 (Signal ground)During communicationPulse generation
4 (Chassis Ground) - BodyAlways1 W or less
5 (Signal Ground) - BodyAlways1 W or less
16 (B+) - BodyAlways9 - 14 V
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of hand-held tester to
DLC3, turned the ignition switch ON and operated the hand-
held tester, there is a problem on the vehicle side or tool side.
If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.