1998 TOYOTA LAND CRUISER warning light

DI8ES-03
DI-710
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
903 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
Proceed with troubleshooting of each circuit in the table below.
SymptomSuspected AreaSee page

With the ignition switch in ON position, the SRS warning light
sometimes lights up after approx. 6 seconds have elapsed.

SRS warning light is always lit up even when ignition switch is in
the LOCK position.
SRS warning light circuitDI-927

With the ignition switch in ON position, the SRS warning light
does not light up.

DTC is not displayed.

SRS warning light is always lit up at the time of DTC check pro-
cedure.
TC terminal circuitDI-932

DTC is displayed without TC and CG terminal connection.

DIB3Q-01
H01357
C26
C25C27
B
A
25 26 2122 17
18 13 14 910 5 6
27 28 2324 1920 15 16 1112 412 3
B
A
7 81 2 3 5 64
9 10 11 12 78 1 2 3 5 64
9 10 11 12 78BA DI-706
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
899 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TERMINALS OF ECU
1. w/o Side Airbag:
No.SymbolTerminal Name
A-Electrical Connector Check Mechanism
B-Electrical Connector Check Mechanism
C26 - 3LASRS Warning Light
C26 - 5IG2Power Source
C26 - 7P2-Squib (Passenger, 2nd step)
C26 - 8P2+Squib (Passenger, 2nd step)
C26 - 9+SRFront Airbag Sensor RH
C26 - 10P+Squib (Passenger)
C26 - 11P-Squib (Passenger)
C26 - 12SILDiagnosis
C26 - 13D-Squib (Driver)
C26 - 14D+Squib (Driver)
C26 - 15+SLFront Airbag Sensor LH
C26 - 16D2+Squib (Driver, 2nd step)
C26 - 17D2-Squib (Driver, 2nd step)
C26 - 19TCDiagnosis
C26 - 20-SRFront Airbag Sensor RH
C26 - 23GSW2Engine ECU
C26 - 26-SLFront Airbag Sensor LH
C26 - 27E1Ground
C26 - 28E2Ground
C25 - 1PL-Squib (Seat Belt Pretensioner, LH)
C25 - 2PL+Squib (Seat Belt Pretensioner, LH)
C25 - 3LSP+Seat Position Sensor Assembly

H16828
C26
C25C27
A B
AA BB
25 26 2122 17
18 13 14 910 5 6 1 2
27 28 2324 1920 15 16 1112 78 3
412 3 4
5 6 9 10 11 12 78
17 1314 15 16 18 19 201 2 3 4
5 6 9 10 11 12 78
17 1314 15 16 18 19 20 DI-708
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
901 Author
: Date
:
2004 LAND CRUISER (RM1071U)
2. w/ Side Airbag:
No.SymbolTerminal Name
A-Electrical Connector Check Mechanism
B-Electrical Connector Check Mechanism
C26 - 3LASRS Warning Light
C26 - 5IG2Power Source
C26 - 7P2-Squib (Passenger, 2nd step)
C26 - 8P2+Squib (Passenger, 2nd step)
C26 - 9+SRFront Airbag Sensor RH
C26 - 10P+Squib (Passenger)
C26 - 11P-Squib (Passenger)
C26 - 12SILDiagnosis
C26 - 13D-Squib (Driver)
C26 - 14D+Squib (Driver)
C26 - 15+SLFront Airbag Sensor LH
C26 - 16D2+Squib (Driver, 2nd step)
C26 - 17D2-Squib (Driver, 2nd step)
C26 - 19TCDiagnosis
C26 - 20-SRFront Airbag Sensor RH
C26 - 21RMSWRSCA Off Switch
C26 - 22MPX2Instrument Panel Integration ECU
C26 - 23GSW2Diagnosis
C26 - 25RMILRSCA Off Switch Indicator
C26 - 26-SLFront Airbag Sensor LH
C26 - 27E1Ground
C26 - 28E2Ground
C25 - 1CSL-Curtain Shield Airbag Sensor Assembly LH

I24677
IND
(+) (-)
DI-970
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1163 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 security indicator using hand-held tester.
PREPARATION:
Connect the hand-held tester to the DLC 3.
CHECK:
Check that the theft deterrent in the indicator lights in ACTIVE TEST (See page DI-955).
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI-965).
NG
2 Check security indicator.
CHECK:
Connect the positive lead from the battery to terminal 7 (14) and
negative lead to terminal 6 (8), and check that the warning light
lights up.
( ): w/o Navigation system
OK:
Indicator light lights up.
NG Replace multi-display.
OK

DI01Q-07
THEFT DETERRENT SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor Temperature
/ /

Constantly
Sometimes ( Times per day, month)

Once only Brought In

Theft deterrent system cannot be set.

Indicator light does not flash when the theft deterrent system is set.
(It stays ON or does not light at all.)

Theft deterrent system
does not operate.
When unlocked using the
door lock knob.

When the engine hood is
opened.

Once set system
cannot be canceled.

When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.
(However, only when the system has never operated)

When the luggage compartment door is opened with the key.

System cannot be
canceled during warning
operation.
When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.

Warning operation starts when the system is set and the door or luggage compartment door is opened with
the key.

Others.
Date Problem First Occurred

Fine
Cloudy
Rainy
Snowy

Various/Others

Hot
Warm
Cool

Cold (Approx. 5F ( 5C))
Problem Symptom
Malfunction

Horns only

Theft deterrent horn only

Headlights only

Taillights only

Starter cut only

Door lock operation only
DI-954
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1147 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK

DI01U-14
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-965
1158 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Theft deterrent system is not set.
1. Security indicator circuit
2. Key unlock warning switch circuit
3. Door courtesy switch circuit
4. Door unlock detection switch circuit
5. Engine hood courtesy switch circuit
6. Power source circuit
7. Theft deterrent ECUDI-969
DI-974
DI-1062
DI-1 110
DI-976
DI-966
-
Security indicator does not light up or blink.1. Security indicator circuit
2. Theft deterrent ECUDI-969
-
Theft deterrent system cannot be unset even if ignition switch is
ON.1. Key unlock warning switch circuit
2. Power source circuit
3. Theft deterrent ECUDI-974
DI-966
-
During warning condition, horn does not operate.1. Horn circuit
2. Theft deterrent ECUDI-972
-

DI0DV-12
DI-948
- DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1141 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
Perform troubleshooting of the circuit for the applicable problem symptom in the order given in the chart be-
low. Proceed to the page located for each circuit.
HINT:

Troubleshooting of the wireless door lock control system is based on the premise that the door lock
control system and theft deterrent system are operating normally. Accordingly, before troubleshooting
the wireless door lock control system, first make certain that the door lock control system and theft de-
terrent system are operating normally.

If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still reappears even through there are no abnormalities in any of the other circuits, check
and replace the Wireless Door Lock ECU as the last step.
SymptomSuspect AreaSee page
All function of wireless door lock control system do no operate.
1. ECU Power Source Circuit.
2. Door Courtesy Switch Circuit.
3. Door Key Lock and Unlock Switch Circuit.
4. Key Unlock Warning Switch Circuit.
5. Wireless Door Lock ECU.
6. Body ECU (Main).DI-951
DI-1062
DI-1 106
DI-1060
IN-36
IN-36
Only door unlock operation is not possible (Lock operation is pos-
sible).
1. Door Key Lock and Unlock Switch Circuit
2. Door Unlock Detection Switch Circuit
3. Wireless Door Lock ECU.
4. Body ECU (Main).DI-1 106
DI-1060
IN-36
IN-36
Only door lock operation is not possible (Unlock operation is pos-
sible).1. Door Key Lock and Unlock Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1 106
IN-36
IN-36
Only transmitter misoperation prevention function is not possible.
1. Key Unlock Warning Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock function operates even when each door is
opened.1. Door Courtesy Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1062
IN-36
IN-36
Wireless door lock functions incorrectly.
(Although one door is unlocked, when the transmitter switch is
pressed, all doors unlock. )1. Door Unlock Detection Switch Circuit
2. Wireless Door Lock ECU
3. Body ECU (Main).DI-1060
IN-36
IN-36
Wireless door lock operates, but the taillight does not respond.
1. Taillight Relay Circuit
2. Taillight Circuit
3. Wireless Door Lock ECU
4. Body ECU (Main).DI-1076
DI-1076
IN-36
IN-36

[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
2004 LAND CRUISER (EWD548U)
6B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
S6 Stop Light SW
2-1 : Closed with the brake pedal depressed
L4 Light Failure Sensor
1, 2, 7-Ground : Approx. 12 volts with the stop light SW on
4, 8-Ground : Approx. 12 volts with the ignition SW at ON position
11-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
C734L436R737
H1736R637S635
: Relay Blocks
CodeSee PageRelay Blocks (Relay Block Location)
118R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
IB20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C22Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
: Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE142Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV150Luggage Room Wire and Floor Wire (Luggage Room Left)
: Ground Points
CodeSee PageGround Points Location
BL50Under the Left Center Pillar
BO50Back Panel Center
: Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I544Cowl WireB1850Luggage Room Wire
System Outline
Service Hints