Lexus RX300 (MCU15). Manual — part 294
AB0119
H01012
H01065
H10600
H13119
Airbag
Sensor
Assembly
Side Airbag Sensor
Assembly (RH)
CG
Tc
ON
DTC B1140/32
→
←
DLC3
DI–408
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
9
Check airbag sensor assembly.
PREPARATION:
(a)
Turn the ignition switch to LOCK.
(b)
Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c)
Disconnect the side airbag sensor (RH) from the connec-
tor and connect the side airbag sensor (LH) to the con-
nector.
(d)
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 B1140/32 is not output.
HINT:
Codes other than code B1140/32 may be output at this time, but
they are not relevant to this check.
NG
Replace airbag sensor assembly.
OK
AB0119
H01007
H01066
H10600
H12033
Airbag
Sensor
Assembly
Side Airbag Sensor
Assembly (RH)
CG
Tc
ON
DTC B1141/33
→
←
DLC3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–409
LEXUS RX300 (RM785E)
10
Check side airbag sensor assembly (RH).
PREPARATION:
(a)
Turn the ignition switch to LOCK.
(b)
Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c)
Connect the side airbag sensor (RH) to the connector that
the side airbag sensor (LH) was connected to.
(d)
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.
NG
Replace side airbag sensor assembly (RH).
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.
H01450
Side Airbag Sensor Assembly (LH)
Airbag Sensor Assembly
LG–B
L–W
P–L
ESL
FSL
SSL+
VUPL
4
3
2
1
A27
12
10
9
7
GR–L
ESL
FSL
SSL+
VUPL
A27
A27
A27
DI–410
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
LEXUS RX300 (RM785E)
DTC
B1141/33
Side Airbag Sensor Assembly (LH)
Malfunction
CIRCUIT DESCRIPTION
The side airbag sensor assembly (LH) consists of the safing sensor, diagnosis circuit and lateral deceleration
sensor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1141/33 is recorded when occurrence of a malfunction in the side airbag sensor assembly (LH) is
detected.
DTC No.
DTC Detecting Condition
Trouble Area
B1141/33
S Side airbag sensor assembly (LH) malfunction
S Side airbag sensor assembly (LH)
S Wire harness
S Airbag sensor assembly
WIRING DIAGRAM
DI6PT–04
AB0119
H09530
H10600
H12034
ON
CG
Tc
DTC B1141/33
DLC3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–411
LEXUS RX300 (RM785E)
INSPECTION PROCEDURE
1
Is DTC B1141/33 out put?
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).
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
YES
The malfunctioning part can now be considered
normal. To make sure of this, use the simulation
method to check.
NO
2
Is connector of side airbag sensor assembly (LH) properly connected?
3
Prepare for inspection (See step 1 on page DI–431).
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