Dodge Caliber. Manual — part 496
OPERATION
FRONT
The front impact sensors are electronic accelerometers that sense the rate of vehicle deceleration, which provides
verification of the direction and severity of an impact. Each sensor also contains an electronic communication chip
that allows the unit to communicate the sensor status as well as sensor fault information to the microprocessor in
the Occupant Restraint Controller (ORC).
The ORC microprocessor continuously monitors all of the passive restraint system electrical circuits to determine the
system readiness. If the ORC detects a monitored system fault, it sets a Diagnostic Trouble Code (DTC) and con-
trols the airbag indicator operation accordingly. The impact sensors each receive battery current and ground through
dedicated left and right sensor plus and minus circuits from the ORC. The impact sensors and the ORC commu-
nicate by modulating the voltage in the sensor plus circuit.
To diagnose the impact sensors or the electronic controls and communication related to front impact sensor oper-
ation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
SIDE
The side impact sensors are electronic accelerometers that sense the rate of vehicle deceleration, which provides
verification of the direction and severity of an impact. Each sensor also contains an electronic communication chip
that allows the unit to communicate the sensor status as well as sensor fault information to the microprocessor in
the Occupant Restraint Controller (ORC).
The ORC microprocessor continuously monitors all of the side passive restraint system electrical circuits to deter-
mine the system readiness. If the ORC detects a monitored system fault, it sets a Diagnostic Trouble Code (DTC)
and controls the airbag indicator operation accordingly. The impact sensors each receive battery current and ground
through the same left or right sensor plus and minus circuits in a series arrangement from the ORC. The impact
sensors and the ORC communicate by modulating the voltage in the sensor plus circuit.
To diagnose the impact sensors or the electronic controls and communication related to side impact sensor oper-
ation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
REMOVAL
FRONT
1. Disconnect and isolate the battery negative cable.
WARNING: Wait two minutes for the system
reserve capacitor to discharge before servicing
any airbag components.
2. Remove the screw (4) that secures the right or left
front impact sensor (3) to the back of the right or
left radiator support vertical member (2).
3. Disconnect the connector (1) from the sensor (3).
4. Remove the right or left front impact sensor from
the engine compartment.
PM
RESTRAINTS - SERVICE INFORMATION
8O - 381
SIDE - B-PILLAR
1. Disconnect and isolate the battery negative cable.
WARNING: Wait two minutes for the system
reserve capacitor to discharge before servicing
any airbag components.
2. Remove the B-pillar lower trim panel (Refer to 23 -
BODY/INTERIOR/B-PILLAR
LOWER
TRIM
-
REMOVAL).
3. Disconnect the harness connector (4) from the sen-
sor (2).
4. Remove the screw (1) retaining the B-pillar side
impact sensor (2)
5. Remove the sensor (2) from the vehicle.
SIDE - C-PILLAR
1. Disconnect and isolate the battery negative cable.
WARNING: Wait two minutes for the system
reserve capacitor to discharge before servicing
any airbag components.
2. Remove the rear quarter panel trim (Refer to 23 -
BODY/INTERIOR/QUARTER
PANEL
TRIM
-
REMOVAL).
3. Remove the screw (4) that secures the side impact
sensor (3) to the C-pillar (1).
4. Disconnect the harness connector (2) from the sen-
sor (3).
5. Remove the sensor from the C-pillar.
8O - 382
RESTRAINTS - SERVICE INFORMATION
PM
INSTALLATION
FRONT
1. Position the right or left front impact sensor (3) into
the engine compartment near it mounting area.
2. connect the harness connector (1) to the sensor.
3. Position the sensor onto the back of the right or left
radiator support vertical member (2).
NOTE: Be certain that the anti-rotation pin on the
back of the sensor is engaged in the lower clear-
ance hole of the radiator support.
4. Install and tighten the screw (4) that secures the
sensor (3) to the back of the support vertical mem-
ber (2). Tighten the screw to 8 N·m (71 in. lbs.).
WARNING: Do not connect the battery negative
cable (REFER TO 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING - AIRBAG SYSTEM).
Personal injury or death may result if the system
test is not performed first.
SIDE - B-PILLAR
1. Position the sensor onto the B-pillar and install the
mounting screw (1). Tighten the screw to 8 N·m (71
in. lbs.).
NOTE: Be certain that the anti-rotation pin on the
back of the sensor is engaged in the hole just
below the mounting hole in the B-pillar (3).
2. Connect the harness connector (4) to the sensor
(2).
3. Install the B-pillar lower trim panel (Refer to 23 -
BODY/INTERIOR/B-PILLAR
LOWER
TRIM
-
INSTALLATION).
WARNING: Do not connect the battery negative
cable (REFER TO 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING - AIRBAG SYSTEM).
Personal injury or death may result if the system
test is not performed first.
PM
RESTRAINTS - SERVICE INFORMATION
8O - 383
SIDE - C-PILLAR
1. Position the side impact sensor near the inner
C-pillar.
2. Connect the harness connector (2) to the sensor
(3).
3. Position the sensor onto the C-pillar.
NOTE: Be certain that the anti-rotation pin on the
back of the sensor is engaged in the clearance
hole on the C-pillar below the sensor mounting
hole.
4. Install screw (4) that secures the sensor (3) to the
C-pillar (1). Tighten the screw to 8 N·m (71 in. lbs.).
5. Install the rear quarter panel trim (Refer to 23 -
BODY/INTERIOR/QUARTER
PANEL
TRIM
-
INSTALLATION)
WARNING: Do not connect the battery negative
cable (REFER TO 8 - ELECTRICAL/RESTRAINTS -
DIAGNOSIS AND TESTING - AIRBAG SYSTEM).
Personal injury or death may result if the system test is not performed first.
8O - 384
RESTRAINTS - SERVICE INFORMATION
PM
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст