2010 Cadillac CTS Sedan AWD V6-3.6L Page 171
- LR Side Impact Sensor
DTC B0087 0F
- LR Side Impact Sensor Erratic
DTC B0087 39
- LR Side Impact Sensor Internal Electronic Failure
DTC B0087 3A
- LR Side Impact Sensor Incorrect Component Installed
DTC B0088 00
- RR Side Impact Sensor
DTC B0088 0F
- RR Side Impact Sensor Erratic
DTC B0088 39
- RR Side Impact Sensor Internal Electronic Failure
DTC B0088 3A
- RR Side Impact Sensor Incorrect Component Installed
Diagnostic Fault Information
Circuit/System Description
The inflatable restraint discriminating sensors utilizes a bidirectional 2-wire circuit. The sensor modulates current on the interface to send ID, state
of health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a
ground for each of the sensors. When the ignition is turned ON and input power from the SDM is first detected, each sensor responds by
performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds.
The sensors continually communicates status messages to the SDM, which determines if a fault is present in the sensor or circuit. When a fault is
detected, the SDM may reset the appropriate sensor up to 2 times by removing and reapplying power to it. If the fault is still present, the SDM will
set a DTC.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
All of the following conditions exist for 2.5 seconds:
B0083 00, B0084 00, B0085 00, B0086 00, B0087 00, or B0088 00
* The sensor signal circuit is shorted to voltage, shorted to ground, or has an open/high resistance.
* The sensor low reference circuit is open.
* The front end sensor current has been above 23 mA for longer than 5 milliseconds.
B0083 0F, B0084 0F, B0085 0F, B0086 0F, B0087 0F, or B0088 0F
The SDM has received erratic messages from the sensor.
B0083 39, B0084 39, B0085 39, B0086 39, B0087 39, or B0088 39
