05–524

DIAGNOSTICS – SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003) 055Z6–04

DTC B1140/32 SIDE AIRBAG SENSOR ASSY (RH)

MALFUNCTION

CIRCUIT DESCRIPTION
The side airbag sensor assy (RH) circuit consists of the 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 B1140/32 is recorded when occurrence of a malfunction in the side airbag sensor assy (RH) is detected.
DTC No. DTC Detecting Condition Trouble Area

Short circuit in wire harness of side airbag sensor RH
(to ground)

Short circuit in wire harness of side airbag sensor RH
Side airbag sensor assy (RH)
B1140/32 (to B+)
Airbag sensor assy center

Open circuit in wire harness of side airbag sensor RH
Instrument panel wire No.3

Side airbag sensor assy RH malfunction

Airbag sensor assy center malfunction

WIRING DIAGRAM

S11
Side Airbag Sensor Assy (RH) Airbag Sensor Assy Center

7
1 GR
ESR A14 ESR

10
2 L–Y
SSR– A14 SSR–

9
3 LG
FSR A14 FSR

12
4 P
VUPR A14 VUPR

H01450

2004 COROLLA (RM1037U)

Author: Date: 689

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DIAGNOSTICS – SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

INSPECTION PROCEDURE
1 CHECK SIDE AIR BAG SENSOR ASSY RH

SST 09843–18040
(a) Connect the negative (–) terminal cable to the battery,
and wait at least for 2 seconds.
Airbag
(b) Turn the ignition switch to ON, and wait at least for 20 se-
Side Sensor
conds.
Airbag Assy
(c) Clear the DTC stored in memory (See page 05–424).
Sensor Center
(d) Turn the ignition switch to LOCK, and wait at least for 20
Assy RH
seconds.
DLC3 (e) Turn the ignition switch to ON, and wait at least for 20 se-
DTC B1140/32 conds.
(f) Check the DTC (See page 05–424).
OK:
DTC B1140/32 is not output.
CG HINT:
Tc
H01012
H10600 H01065 H40442 Codes other than code B1140/32 may be output at this time, but
they are not relevant to this check.
OK USE SIMULATION METHOD TO CHECK

NG

2 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR

(a) Turn the ignition switch to LOCK.

(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
(c) Check that the connectors is properly connected to the airbag sensor assy center.
NG CONNECT CONNECTORS

OK

3 CHECK SIDE AIRBAG SENSOR ASSY CONNECTOR

(a) Check that the connector is properly connected to the side airbag sensor assy (RH).
NG CONNECT CONNECTORS

OK

2004 COROLLA (RM1037U)

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DIAGNOSTICS – SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

4 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(OPEN)(AIRBAG SENSOR

ASSY CENTER – SIDE AIRBAG SENSOR ASSY RH)

SST 09843–18040
(a) Disconnect the connectors between the airbag sensor
Airbag assy center and the side airbag sensor assy RH.
Sensor (b) Using a service wire, connect VUPR and ESR, and FSR
Side Assy and SSR– of the connector (on the side airbag sensor
Airbag Center assy side) between the airbag sensor assy center and the
Sensor
side airbag sensor assy (RH).
Assy RH
(c) For the connector (on the airbag sensor assy center side)
between the side airbag sensor assy RH and the airbag
sensor assy center, measure the resistance between
VUPR and ESR, and between FSR and SSR–.
OK:
SSR–
Resistance: Below 1 Ω

VUPR

FSR
ESR NG REPAIR OR REPLACE INSTRUMENT PANEL
H01015 WIRE NO.3(AIRBAG SENSOR ASSY CENTER –
C91384
C91385 C82942 H41635 SIDE AIRBAG SENSOR ASSY RH)

OK

5 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(TO GROUND)(AIRBAG

SENSOR ASSY CENTER – SIDE AIRBAG SENSOR ASSY RH)

(a) Disconnect the connection between VUPR and ESR, and

Airbag between FSR and SSR–.
Sensor (b) For the connector (on the airbag sensor assy center side)
Side Assy between the airbag sensor assy center and the side air-
Airbag
Center bag sensor assy (RH), measure the resistance between
Sensor
each terminal of VUPR, SSR– and FSR, and body
Assy RH
ground.
OK:
SSR– FSR Resistance: 1MΩ or Higher

VUPR

ESR NG REPAIR OR REPLACE INSTRUMENT PANEL

H01015
C82942 H40444 WIRE NO.3(AIRBAG SENSOR ASSY CENTER –
SIDE AIRBAG SENSOR ASSY RH)

OK

2004 COROLLA (RM1037U)

Author: Date: 691

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DIAGNOSTICS – SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

6 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(AIRBAG SENSOR ASSY

CENTER – SIDE AIRBAG SENSOR ASSY RH)

(a) For the connector (on the airbag sensor assy center side)
Airbag between the airbag sensor assy center and the side air-
Sensor bag sensor assy (RH), measure the resistance between
Side Assy VUPR and ESR, and between FSR and SSR–.
Airbag
Center OK:
Sensor
Resistance: 1MΩ or Higher
Assy RH

SSR– FSR

VUPR

ESR NG REPAIR OR REPLACE INSTRUMENT PANEL

H01015
C82942 H40444 WIRE NO.3(AIRBAG SENSOR ASSY CENTER –
SIDE AIRBAG SENSOR ASSY RH)

OK

7 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(TO B+)(AIRBAG SENSOR

ASSY CENTER – AIDE AIRBAG SENSOR ASSY RH)

(a) Connect the negative (–) terminal cable to the battery,

Airbag and wait at least for 2 seconds.
Sensor (b) Turn the ignition switch to ON.
Side Assy (c) For the connector (on the airbag sensor assy center side)
Airbag
Center between the airbag sensor assy center and the side air-
Sensor
bag sensor assy (RH), measure the voltage between
Assy RH
each terminal of VUPR, SSR– and FSR, and body
ground.
SSR– FSR OK:
Voltage: Below 1 V

VUPR

ESR
H01015
C82942 H40444

NG REPAIR OR REPLACE INSTRUMENT PANEL

WIRE NO.3(AIRBAG SENSOR ASSY CENTER –
SIDE AIRBAG SENSOR ASSY RH)

OK

2004 COROLLA (RM1037U)

Author: Date: 692

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DIAGNOSTICS – SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

8 CHECK SIDE AIR BAG SENSOR ASSY RH

SST 09843–18040
(a) Turn the ignition switch to LOCK.
Airbag (b) Disconnect the negative (–) terminal cable from the bat-
Sensor tery, and wait at least for 90 seconds.
Side (c) Connect the airbag sensor assy center connector.
Assy
Airbag (d) Interchange the side airbag sensor assy (RH) and LH and
Center
Sensor
connect the connectors to them.
Assy LH
DTC B1140/32 (e) Connect the negative (–) terminal cable to the battery,
and wait at least for 2 seconds.
DLC3
(f) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
DTC B1141/33 (g) Clear the DTC stored in memory (See page 05–424).
CG (h) Turn the ignition switch to LOCK, and wait at least for 20
Tc
H01012
seconds.
H10600 H01065
H01066 H41930 (i) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(j) Check the DTC (See page 05–424).
OK:
(A): DTC B1140/32 is not output.
(B): DTC B1141/33 is not output.
NG(A) REPLACE AIR BAG SENSOR ASSY CENTER

NG(B) REPLACE SIDE AIR BAG SENSOR ASSY RH

OK

9 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

2004 COROLLA (RM1037U)

Author: Date: 693