steering TOYOTA LAND CRUISER 1996 J80 User Guide

R04759
R04775
BR3795
OKNG
-
DIAGNOSTICS ANTI-LOCK BRAKE SYSTEM
DI-214
1996 LAND CRUISER (RM451U)
4 Check sensor rotor and sensor installation.
Front
PREPARATION:
Remove front axle hub and knuckle spindle (See page
SA-8).
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth.
CHECK:
Check the sensor tip and grease.
OK:
No scratches or foreign objects on the sensor tip and
grease.
Rear
PREPARATION:
Remove the rear brake caliper and disc.
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth.
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
CHECK:
Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and steering
knuckle or rear axle carrier.
NG Replace speed sensor or rotor.
NOTICE:
Check the speed sensor signal last (See page DI-189).
OK
Check and replace ABS ECU.
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DI5Q3−02
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−243
1996 LAND CRUISER (RM451U)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, the circuit listed for that code in t\
he table below
(Proceed to the page given for that circuit.).
DTC No.
(See Page)Detection ItemTrouble AreaSRS
Warning Light
Normal
( DI−271 )System normal−OFF
Source voltage dropBattery
 Airbag sensor assemblyON
11
( DI−247 )
Short in squib circuit (to ground)Steering wheel pad (D squib)
 Front passenger airbag assembly (P squib )
 Spiral cable
 Airbag sensor assembly
 Wire harness
ON
12
( DI−254 )
Short in squib circuit (to B+)Steering wheel pad (D squib)
 Front passenger airbag assembly (P squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
ON
14
( DI−260 )
Open in D squib circuitSteering wheel pad (D squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
ON
31
( DI−265 )Airbag sensor assembly malfunctionAirbag sensor assemblyON
54
( DI−267 )Open in P squib circuitFront passenger airbag assembly (P squib)
 Airbag sensor assembly
 Wire harness
ON
HINT:
When the SRS warning light remains lit up and the DTC is the normal code\
, this means a source drop
voltage.
This malfunction is not stored in memory by the airbag sensor assembly a\
nd if the power source volt-
age returns to normal, the SRS warning light will automatically go out.
When 2 or more codes are indicated, the codes will be displayed in numer\
al order starting from the
lowest numbered code.
If a code not listed on the chart is displayed, the airbag sensor assemb\
ly is faulty.
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DI5Q4−02
R13515
Front Passenger Airbag Assembly
Steering Wheel Pad
(With Airbag)
Spiral Cable
Airbag Sensor Assembly
DI−244
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
PARTS LOCATION
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DI5Q7−03
R16017
Airbag Sensor Assembly
P Squib
D Squib Spiral
Cable W−R
B−R
WB
1
2 1 2
1
2
3
4 P
+
P−
D+
D−
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−247
1996 LAND CRUISER (RM451U)
CIRCUIT INSPECTION
DTC 11 Short in Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passen-
ger airbag assembly. If causes the SRS to deploy when the SRS deployment conditions are sat\
isfied.
For details of the function of each component, see FUNCTION OF COMPONENT\
S on page RS−2.
DTC 11 is recorded when ground short is detected in the squib circuit.
DTC No.DTC Detection ConditionTrouble Area
11
 Short circuit in squib wire harness (to ground)
 Squib malfunction
 Spiral cable malfunction
 Airbag sensor assembly malfunctionSteering wheel pad (D squib)
 Front passenger airbag assembly (P squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
WIRING DIAGRAM
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R05901
R14290H00004
Airbag Sensor
Assembly
P Squib
D Squib Spiral
Cable
D+
D−
DI−248
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Preparation. (See step 1 on page DI−271)
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the resistance between
D
+, D− and body ground.
OK:
Resistance: 1 MΩ or Higher
NG Go to step 7.
OK
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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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R05899
R14301H00009
Airbag Sensor
Assembly
Spiral
Cable
P Squib
D Squib D+
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−253
1996 LAND CRUISER (RM451U)
7 Check spiral cable.
PREPARATION:
Disconnect connector between airbag sensor assembly and
spiral cable.
CHECK:
Measure resistance between D+ on spiral cable side of connec-
tor between spiral cable and steering wheel pad and body
ground.
OK:
Resistance: 1 MΩ or Higher
NG Repair or replace spiral cable.
OK
Repair or replace harness or connector be-
tween airbag sensor assembly and spiral
cable.
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AB0119
W01931
R14300
H00010
Airbag Sensor
Assembly
Spiral
Cable
ON
P Squib
D Squib D+
D−
(+)
(−)
DI−254
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
DTC 12 Short in Squib Circuit (to B+)
CIRCUIT DESCRIPTION
The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passen-
ger airbag assembly. It causes the SRS to deploy when the SRS deployment conditions are sat\
isfied.
For details of the function of each component, see page FUNCTION OF COMP\
ONENTS on page RS−2.
DTC 12 is recorded when a B+ short is detected in the squib circuit.
DTC No.DTC Detection ConditionTrouble Area
12
 Short circuit in squib wire harness (to B+)
 Squib malfunction
 Spiral cable malfunction
 Airbag sensor assembly malfunctionSteering wheel pad (D squib)
 Front passenger airbag assembly (P squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
WIRING DIAGRAM
Refer to page DI−247 for the WIRING DIAGRAM.
INSPECTION PROCEDURE
1 Preparation. (See step 1 on page DI−271)
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the voltage between
D
+, D− and body ground.
OK:
Voltage: 0 V
NG Go to step 7.
OK
DI5Q8−03
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AB0069
AB0069
AB0118
R13006AB0119W01933
W02043 H00012
Airbag Sensor
Assembly
P+
P−
Spiral
Cable
P Squib
D Squib D− D+ ACC ON
or
DLC1 Code 12
E1 Tc
DI−256
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
4 Check airbag sensor assembly.
PREPARATION:
(a) Connect connector to airbag sensor assembly.
(b) Using a 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 12 is not output.
HINT:
Codes other than code 12 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK
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