2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 216
DTC B0087 3A
- LR Side Impact Sensor Incorrect Component Installed
DTC B0087 71
- LR Side Impact Sensor Invalid Serial Data Received
DTC B0088 00
- RR Side Impact Sensor No Additional Information
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
DTC B0088 71
- RR Side Impact Sensor Invalid Serial Data Received
Diagnostic Fault Information
Circuit/System Description
The inflatable restraint front end sensor utilizes a unidirectional 2-wire circuit. The front end 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 the front end sensor. When the ignition is turned ON and input power from the SDM is first detected, the front end 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 front end sensor continually communicates status messages to the SDM, which determines if a fault is present in the front end sensor circuit.
When a fault is detected, the SDM may reset the front end 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 volts.
Conditions for Setting the DTC
Any of the following conditions exist for 2.5 seconds:
B0083 00, B0084 00, B0085 00, B0086 00, B0087 00, B0088 00
* The front end sensor has been shorted to voltage, open, or shorted to ground.
* The front end sensor current has been above 23 mA for longer than 5 milliseconds.
* The SDM has not received a message from the front end sensor for more than 375 milliseconds.
B0083 0F, B0084 0F, B0085 0F, B0086 0F, B0087 0F, B0088 0F
The SDM has received erratic messages from the front end sensor.
B0083 39, B0084 39, B0085 39, B0086 39, B0087 39, B0088 39
* The SDM has received a Not Ok (NOK) message from the front end sensor.
