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DI-455
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI6N0-03
DTC B1140/32 Side Airbag Sensor Assembly (RH)
Malfunction
CIRCUIT DESCRIPTION
The side airbag sensor assembly (RH) consists of the safing sensor, diagnosis circuit and lateral decelera-
tion 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 B1140/32 is recorded when occurrence of a malfunction in the side airbag sensor assembly (RH) is
detected.
DTC No. DTC Detecting Condition Trouble Area
S Side airbag sensor assembly (RH)
B1140/32 S Side airbag sensor assembly (RH) malfunction S Airbag sensor assembly
S Wire harness
WIRING DIAGRAM
Side Airbag Sensor Assembly (RH) Airbag Sensor Assembly
10
4 GR
ESR C4 ESR
7
3 LG
SSR- C4 SSR-
9
2 L-Y
SSR+ C4 SSR+
12
1 P
VUPR C4 VUPR
H01450
2001 SIENNA (RM787U)
Author : Date : 609
DI-456
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
1 Is DTC B1140/32 out put?
CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
ACC ON for 20 seconds.
(b) Clear the DTC stored in memory (See page DI-358 ).
(c) Turn the ignition switch to LOCK, and wait at least for 20
or
seconds.
DLC1 (d) Turn the ignition switch to ACC or ON, and wait at least
DTC B1140/32 for 20 seconds.
(e) Check the DTC (See page DI-358 ).
HINT:
Codes other than code B1140/32 may be output at this time, but
E1 Tc they are not relevant to this check.
AB0118 AB0119 YES The malfunctioning part can now be considered
R13006 H09528 H09527
normal. To make sure of this, use the simulation
method to check.
NO
2 Is connector of side airbag sensor assembly (RH) properly connected?
3 Prepare for inspection (See step 1 on DI-486 ).
2001 SIENNA (RM787U)
Author : Date : 610
DI-457
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 Check wire harness.
PREPARATION:
Side Airbag Sensor (a) Disconnect the side airbag sensor assembly (RH) con-
Assembly (RH) nector.
Airbag (b) Using a service wire, connect SSR+ and ESR of the con-
Sensor nector (on the side airbag sensor assembly side) between
Assembly the side airbag sensor assembly (RH) and airbag sensor
assembly.
CHECK:
For the connector (on the airbag sensor assembly side) be-
Airbag Sensor tween the side airbag sensor assembly (RH) and the airbag
SSR+ Assembly sensor assembly, measure the resistance between SSR+ and
ESR.
OK:
ESR Resistance: Below 1
(+)
SSR+
(-) ESR
H01015
H01160
NG Repair or replace harness or connector be-
H01058 H01036
tween side airbag sensor assembly (RH) and
airbag sensor assembly.
OK
2001 SIENNA (RM787U)
Author : Date : 611
DI-458
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
5 Check wire harness.
PREPARATION:
Side Airbag Sensor
Assembly (RH)
Using a service wire, connect VUPR and FSR of the connector
Airbag (on the side airbag sensor assembly side) between the side air-
Sensor bag sensor assembly (RH) and airbag sensor assembly.
Assembly CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (RH) and the airbag
sensor assembly, measure the resistance between VUPR and
FSR.
Airbag Sensor
Assembly OK:
VUPR
Resistance: Below 1
FSR
VUPR FSR
(+)
(-)
H01015
H01059
H01161
NG Repair or replace harness or connector be-
H01037
tween side airbag sensor assembly (RH) and
airbag sensor assembly.
OK
2001 SIENNA (RM787U)
Author : Date : 612
DI-459
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
6 Check wire harness (to ground).
CHECK:
Side Airbag Sensor
Assembly (RH) For the connector (on the airbag sensor assembly side) be-
Airbag tween the side airbag sensor assembly (RH) and the airbag
Sensor
sensor assembly, measure the resistance between body
Assembly
ground and each of SSR+, VUPR and FSR.
OK:
Resistance: Below 1
Airbag Sensor Assembly
VUPR
FSR
(-) (+)
H01013 SSR+ H01162
NG Repair or replace harness or connector be-
H01038
tween side airbag sensor assembly (RH) and
airbag sensor assembly.
OK
7 Check wire harness (to B+).
ON CHECK:
Side Airbag Sensor (a) Turn the ignition switch to ON.
Assembly (RH) Airbag (b) For the connector (on the airbag sensor assembly side)
Sensor between the side airbag sensor assembly (RH) and the
Assembly airbag sensor assembly, measure the voltage between
the body ground and each of SSR+, VUPR, ESR and
FSR.
Airbag Sensor Assembly OK:
Voltage: 0 V
SSR+
FSR
VUPR
AB0119
H01013 (-) (+) ESR NG Repair or replace harness or connector be-
H08270
H01039 tween side airbag sensor assembly (RH) and
airbag sensor assembly.
OK
2001 SIENNA (RM787U)
Author : Date : 613
DI-460
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
8 Is DTC B1140/32 out put again?
PREPARATION:
(a) Connect the connector to the side airbag sensor assem-
Side Airbag Sensor bly (RH).
Assembly (RH) Airbag
(b) Connect the connector to the airbag sensor assembly.
Sensor
Assembly (c) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON, and wait at least
ACC ON for 20 seconds.
(b) Clear the DTC stored in memory (See step 5 on page
or DI-358 ).
(c) Turn the ignition switch to LOCK, and wait at least for 20
DLC1 DTC B1140/32 seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
(e) Check the DTC (See page DI-358 ).
E1 Tc OK:
H01012
DTC B1140/32 is not output.
AB0118 AB0119
R13006 H01065 H01164 HINT:
Codes other than code B1140/32 may be output at this time, but
they are not relevant to this check.
NG Go to step 9.
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.
2001 SIENNA (RM787U)
Author : Date : 614
DI-461
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
9 Check airbag sensor assembly.
PREPARATION:
(a) Turn the ignition switch to LOCK.
Side Airbag Sensor (b) Disconnect negative (-) terminal cable from the battery,
Assembly (LH) Airbag
and wait at least for 90 seconds.
Sensor
Assembly (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
ACC ON wait at least for 2 seconds.
CHECK:
or (a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
DLC1 DTC B1140/32 (b) Clear the DTC stored in memory (See step 5 on page
DI-358 ).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
E1 Tc (d) Turn the ignition switch to ACC or ON, and wait at least
H01012
for 20 seconds.
AB0118 AB0119
R13006 H01065 H01164 (e) Check the DTC (See page DI-358 ).
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
2001 SIENNA (RM787U)
Author : Date : 615
DI-462
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
10 Check side airbag sensor assembly (RH).
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
Airbag and wait at least for 90 seconds.
Sensor (c) Connect the side airbag sensor (RH) to the connector that
Side Airbag Sensor Assembly
the side airbag sensor (LH) was connected to.
Assembly (RH)
(d) Connect negative (-) terminal cable to the battery, and
ACC ON wait at least for 2 seconds.
CHECK:
or (a) Turn the ignition switch to ACC or ON, and wait at least
for 20 seconds.
DLC1 DTC B1141/33 (b) Clear the DTC stored in memory (See step 5 on page
DI-358 ).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ACC or ON, and wait at least
E1 Tc for 20 seconds.
H01007
(e) Check the DTC (See page DI-358 ).
AB0118 AB0119
R13006 H01066 H01170 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.
2001 SIENNA (RM787U)
Author : Date : 616
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