Toyota Sienna Service Manual: Side Airbag Sensor Assembly RH Circuit Malfunction
DTC B1140/32 Side Airbag Sensor Assembly RH Circuit Malfunction
DESCRIPTION
The side airbag sensor RH circuit consists of the center airbag sensor
assembly and side airbag sensor
RH.
If the center airbag sensor assembly receives signals from the side airbag
sensor RH, it judges whether or
not the SRS should be activated.
DTC B1140/32 is recorded when a malfunction in the side airbag sensor RH circuit
is detected.
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1140/32 |
- The center airbag sensor assembly receives a line
short circuit signal, an open circuit signal, a short
circuit to ground signal or a short circuit to B+ signal
in the side airbag sensor RH circuit for 2 seconds.
- Side airbag sensor RH malfunction
- Center airbag sensor assembly malfunction
|
- Side airbag sensor RH
- Center airbag sensor assembly
- Floor wire No. 2
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK DTC
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Clear the DTCs stored in memory (5).
- Turn the ignition switch to the LOCK position.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Check the DTCs (5).
OK:
DTC B1140/32 is not output.
HINT:
Codes other than DTC B1140/32 may be output at this
time, but they are not related to this check.
Go to step 2
USE SIMULATION METHOD TO CHECK
2 CHECK CONNECTION OF CONNECTORS
- Turn the ignition switch to the LOCK position.
- ) Disconnect the negative (-) terminal cable from the
battery, and wait for at least 90 seconds.
- ) Check that the connectors are properly connected to the
center airbag sensor assembly and the side airbag
sensor RH.
OK:
The connectors are connected.
CONNECT CONNECTORS
3 CHECK FLOOR WIRE NO. 2 (OPEN)
- Disconnect the connectors from the center airbag sensor
assembly and the side airbag sensor RH.
- Using a service wire, connect A22-17 (VUPR) and A22-
15 (ESR) of connector "B".
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
- Using a service wire, connect A22-16 (SSR+) and A22-
13 (SSR-) of connector "B".
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
REPAIR OR REPLACE FLOOR WIRE
NO. 2
4 CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
- Disconnect the service wire from connector "B".
- Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
- Turn the ignition switch to the ON position.
- Measure the voltage according to the value(s) in the
table below.
Standard voltage
REPAIR OR REPLACE FLOOR WIRE
NO. 2
5 CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
- Turn the ignition switch to the LOCK position.
- Disconnect the negative (-) terminal cable from the
battery, and wait for at least 90 seconds.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
REPAIR OR REPLACE FLOOR WIRE
NO. 2
6 CHECK FLOOR WIRE NO. 2 (SHORT)
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
REPAIR OR REPLACE FLOOR WIRE
NO. 2
7 CHECK SIDE AIRBAG SENSOR RH
- Connect the connector to the center airbag sensor
assembly.
- Interchange the side airbag sensor RH with LH and
connect the connectors to them.
- Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Clear the DTCs stored in memory (5).
- Turn the ignition switch to the LOCK position.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Check the DTCs (5).
Result
HINT:
Codes other than DTC B1140/32 and B1141/33 may be
output at this time, but they are not related to this check
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
REPLACE SIDE AIRBAG SENSOR
RH
USE SIMULATION METHOD TO CHECK
DTC B1135/24 Half Connection in Center Airbag Sensor
Assembly Connectors
DESCRIPTION
The center airbag sensor assembly connector has a mechanism that electrically
detects half connection.
The ...
DTC B1141/33 Side Airbag Sensor Assembly LH Circuit Malfunction
DESCRIPTION
The side airbag sensor LH circuit consists of the center airbag sensor
assembly and side airbag sensor
LH.
If the ce ...
Other materials:
Installation
1. INSTALL HEATED OXYGEN SENSOR (for Bank 2
Sensor 2) (See page EC-39)
2. INSTALL FRONT EXHAUST PIPE ASSEMBLY
(a) Install a new gasket to the front exhaust pipe
assembly.
(b) Install the front exhaust pipe assembly with the 2
nuts.
Torque: 62 N*m (632 kgf*cm, 46 ft.*lbf)
3. V
V(A) ins ...
Inspection
1. INSPECT LOWER BALL JOINT ASSEMBLY FRONT LH
(a) As shown in the illustration, flip the ball joint stud
back and forth 5 times, before installing the nut.
(b) Using a torque wrench, turn the nut continuously at
a rate of 3 - 5 seconds per 1 turn and take the
torque reading on the 5th tur ...
Terminals of ECU
1. CENTER AIRBAG SENSOR ASSEMBLY (w/ Side
Airbag)
2. CENTER AIRBAG SENSOR ASSEMBLY (w/o Side
Airbag)
...