Lexus RX300 (MCU15). Manual — part 295
H01050
H01010
H16250
H16303
Airbag
Sensor
Assembly
(–)
(+)
SSL+
Airbag Sensor
Assembly
ESL
SSL+
ESL
Side Airbag Sensor
Assembly (LH)
← →
DI–412
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
4
Check wire harness.
PREPARATION:
(a)
Disconnect the side airbag sensor assembly (LH).
(b)
Using a service wire, connect SSL+ and ESL of the con-
nector (on the side airbag sensor assembly side) between
the side airbag sensor assembly (LH) and the airbag sen-
sor assembly.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between SSL+ and
ESL.
OK:
Resistance: Below 1 Ω
NG
Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK
H01010
H01051
H16249
H16304
Airbag
Sensor
Assembly
(–)
(+)
Side Airbag Sensor
Assembly (LH)
VUPL
Airbag Sensor
Assembly
VUPL
FSL
FSL
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–413
LEXUS RX300 (RM785E)
5
Check wire harness.
PREPARATION:
Using a service wire, connect VUPL and FSL of the connector
(on the side airbag sensor assembly side) between the side air-
bag sensor assembly (LH) and the airbag sensor assembly.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between VUPL and
FSL.
OK:
Resistance: Below 1 Ω
NG
Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK
H01052
H01008
H01168
Airbag
Sensor
Assembly
SIde Airbag Sensor Assembly
(LH)
Airbag Sensor Assembly
VUPL
(–)
(+)
SSL+
FSL
H01008
H01053
AB0119
H08271
Airbag
Sensor
Assembly
Side Airbag Sensor
Assembly (LH)
Airbag Sensor Assembly
VUPL
(–)
(+)
SSL+
FSL
ESL
ON
DI–414
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
6
Check wire harness (to ground).
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between body
ground and each of SSL+, VUPL and FSL.
OK:
Resistance: 1 MΩ or Higher
NG
Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK
7
Check wire harness (to B+).
CHECK:
(a)
Turn the ignition switch to ON.
(b)
For the connector (on the airbag sensor assembly side)
between the side airbag sensor assembly (LH) and the
airbag sensor assembly, measure the voltage between
body ground and each of SSL+, ESL, VUPL and FSL.
OK:
Voltage: 0 V
NG
Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK
AB0119
H01007
H01066
H10600
H12033
Airbag
Sensor
Assembly
Side Airbag Sensor Assembly (LH)
CG
Tc
ON
→
←
DTC B1141/33
→
←
DLC3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–415
LEXUS RX300 (RM785E)
8
Is DTC B1141/33 out put again?
PREPARATION:
(a)
Connect the connector to the side airbag sensor assem-
bly (LH).
(b)
Connect the connector to the airbag sensor assembly.
(c)
Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a)
Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b)
Clear the DTC stored in memory (See step 5 on page
DI–305).
(c)
Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d)
Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e)
Check the DTC (See page DI–305).
OK:
DTC B1141/33 is not output.
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
NO
Go to step 9.
YES
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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