1996 TOYOTA LAND CRUISER Terminal

DI5Q2−02
R13451
R13006
E1Tc
AT0716
Normal Code
ON
OFF 0.25
0.25
DI−240
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
PRE−CHECK
1. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to ACC or ON and check that the
SRS warning light lights up.
(b) Check that the SRS warning light goes out after approx. 6 seconds.
HINT:
When the ignition switch is at ACC or ON and the SRS
warning light remains on or flashes, the airbag sensor as-
sembly has detected a malfunction code.
If, after approx. 6 seconds have elapsed, the SRS warn-
ing light sometimes lights up or the SRS warning light
lights up even when the ignition switch is OFF, a short in
the SRS warning light circuit can be considered likely.
Proceed to ”SRS warning light system malfunction” on
page DI−274 , DI−276 .
2. DTC CHECK (Using diagnosis check wire)
(a) Output the DTC. (1) Turn the ignition switch to ACC or ON position andwait approx. 20 seconds.
(2) Using SST, connect terminals Tc and E1 of the
DLC1.
SST 09843−18020
(b) Read the DTC. Read the 2− digit DTC as indicated by the number of times
the SRS warning light blinks. As an example, the blinking
patterns, normal, 11 and 31 are as shown on the illustra-
tion.
Normal code indication
The light will blink 2 times per second.
Malfunction code indication
The first blinking output indicates the first digit
of a 2−digit DTC. After a 1.5 second pause,
the second blinking output will indicate the
second digit.
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AB0056
Code 11 and 31ON
OFF
0.5 2.5 4.0
1.5 0.5
Code 11 Code 31 Repeat
R13819
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−241
1996 LAND CRUISER (RM451U)
If there are 2 or more codes, there will be a 2.5 second pause
between each codes. After all the codes have been output,
there will be a 4.0 second pause and they will all be repeated.
HINT:
In the event of a number of trouble codes, indication will
start from the smallest numbered code tot he larger.
If it does not output a DTC or outputs a DTC without termi-
nal connection, proceed to the Tc terminal circuit inspec-
tion on page DI−279.
3. DTC CHECK (Using TOYOTA hand −held tester)
(a) Hook up the TOYOTA hand−held tester to the DLC1.
(b) Read the DTCs by following the prompts on the tester
screen.
HINT:
Please refer to the T OYOTA hand −held tester operator ’s manu-
al, for further details.
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H00059
TerminalTime of Body Ground
Tc
Tc
ABOFF
AB
Body
GroundON
OFF
Body
Ground
”1”
”2” ”3”
”4””5”
OFF
1 second
( ± 0.5 sec.) 1 second
( ± 0.5 sec.)
Several
seconds
50 m sec.
50 m sec.
R13819
DI−242
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
4. DTC CLEARANCE (Using diagnosis check wire)
(a) Connect the 2 service wires to terminals Tc and AB of
DLC1.
(b) Turn the ignition switch to ACC or ON and wait approx. 6 seconds.
(c) Starting with the Tc terminal, apply body ground alternate-
ly to terminal Tc and terminal AB twice each in cycles of
1.0 seconds. Confirm that body ground is absolute.
Finally, keep applying body ground to terminal Tc.
HINT:
When alternately grounding terminals Tc and AB, release
ground from one terminal and immediately apply it to the other
terminal within an interval of 0.2 second. If DTCs do not clear,
repeat the above procedure until the codes are cleared.
(d) Several seconds after doing the clearing procedure, the SRS waring light will blink in a 50 m sec. cycle to indicate
the codes have been cleared.
5. USING TOYOTA HAND−HELD TESTER
(a) Hook up the TOYOTA hand−held tester to the DLC1.
(b) Clear the DTC by following the prompts on the tester
screen.
HINT:
Please refer to the T OYOTA hand −held tester operator ’s manu-
al for further details.
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DI5Q5−02
W02056
1
2
3
4
567
8910 A
B
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−245
1996 LAND CRUISER (RM451U)
TERMINALS OF ECM
No.SymbolTerminal Name
A−Electrical Connection Check Mechanism
B−Electrical Connection Check Mechanism
1P−Squib  (Passenger)
2P+Squib  (Passenger)
3D−Squib  (Driver)
4D+Squib  (Driver)
5E1Ground
6E2Ground
7TcDiagnosis
8LASRS Warning Light
9IG2Power Source (IGN Fuse)
10ACCPower Source (CIG Fuse)
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DI5Q6−01
DI−246
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
PROBLEM SYMPTOMS TABLE
Proceed with troubleshooting of each circuit in the table below.
SymptomSuspect AreaSee page
With the ignition switch at ACC or ON, the SRS warning light
sometimes lights up after approx. 6 seconds have elapsed.
 SRS warning light lights up even when ignition switch is in the
LOCK position.
SRS warning light system malfunction
(Always lit up when ignition switch is in LOCK position.)DI−274
With the ignition switch at ACC or ON, the SRS warning lights
does not light up.SRS warning light system malfunction
(Does not light up when ignition switch is turned to ACC or
ON.)
DI−276
DTC not displayed.
 SRS warning light is always lit up with a DTC check procedure.
 DTC displayed without Tc and E1 terminal connection.
Tc terminal circuitDI−279
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AB0069
W01933
AB0118
R13006AB0069
AB0118
W02042
H00006
Airbag Sensor
Assembly
Spiral
Cable
P Squib
D Squib P+
P−
D+
D− ACC
ON
or
Code 11
DLC1
Tc
E1
DI−250
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
4 Check airbag sensor assembly.
PREPARATION:
(a) Connect connector to airbag sensor assembly.
(b) Using service wire, connect D
+ and D− on spiral cable side
of connector between spiral cable and steering wheel
pad.
(c) Using a service wire, connect P
+ and P− on airbag sensor
assembly side of connector between airbag sensor as-
sembly and front passenger airbag assembly.
(d) Connect negative ( −) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON and wait at least 20 se-
conds.
(b) Clear malfunction code stored in memory. (See page DI−240 )
(c) Turn ignition switch to LOCK, and wait at least 20 se- conds.
(d) Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.
(e) Using SST, connect terminals Tc and E1 of DLC1. SST 09843−18020
(f) Check DTC
OK:
DTC 11 is not output.
HINT:
Codes other than code 11 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK
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R05896
AB0118
R13006AB0119
W02042
H00007
Spiral
Cable
P Squib
D Squib
ACC ON
or
DLC1 Code 11
E1 Tc Airbag
Sensor
Assembly
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−251
1996 LAND CRUISER (RM451U)
5 Check D squib.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative ( −) terminal cable from the battery,
and wait at least 90 seconds.
(c) Connect steering wheel pad connector.
(d) Connect negative ( −) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.
(b) Clear malfunction code stored in memory. (See page DI−240 )
(c) Turn ignition switch to LOCK, and wait at least 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.
(e) Using SST, connect terminals Tc and E1 of DLC1.
SST 09843−18020
(f) Check DTC.
OK:
DTC 11 is not output.
HINT:
Codes other than code 11 may be output at this time, but they
are not relevant to this check.
NG Replace steering wheel pad.
OK
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R05897
AB0118
R13006AB0119
W02042
H00008
Airbag
Sensor
Assembly
Spiral
Cable
P Squib
D Squib ACC ON
or
DLC1
E1 Tc Code 11
DI−252
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
6 Check P squib.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative ( −) terminal cable from the battery,
and wait at least 90 seconds.
(c) Connect front passenger airbag assembly connector.
(d) Connect negative ( −) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.
(b) Clear malfunction code stored in memory. (See page DI−240 )
(c) Turn ignition switch to LOCK, and wait at least 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.
(e) Using SST, connect terminals Tc and E1 of DLC1.
SST 09843−18020
(f) Check DTC.
OK:
DTC 11 is not output.
HINT:
Codes other than code 11 may be output at this time, but they
are not relevant to this check.
NG Replace front passenger airbag assembly.
OK
From the results of the above inspection, the malfunctioning part can now be \
considered normal.
To make sure of this, use the simulation method to check.
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