Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information SRS-U002800

Condition
The control modules in the vehicle send and receive information continuously on the vehicle's controller area network (CAN).
The Supplemental restraint system module (SRS) is the main system in a local network, sensor-CAN, that both transmits and receives information via a standardised serial communication protocol - CAN (Controller Area Network). The local network can have several different control modules connected (market dependent).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Interference in communication on the local network, sensor CAN.
- Incorrect value runs longer than 2.5 seconds.

Note! This fault code is set regardless of on which network the problem is located.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition on.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met. In the event of system communication problems, it is not possible to communicate with the control module. Therefore it will only be possible to read off the fault if it is intermittent.





Substitute value
- The control module shuts off communication with the local network.

Hint: The control module is off until the power supply has been broken. When the power supply is connected the control module will make a new attempt to communicate.

Possible source
- Short-circuit between wiring.
- Short-circuiting to battery.
- Ground (GND) short
- Internal fault in another control module in the local network.
- Damaged supplemental restraint system module (SRS).

Fault symptom[s]
- KT, Warning lights and chimes/Supplemental Restraint System (SRS) indication/no indication
- 7G, Text window and warning symbol/Yellow symbol and text message
- EA, Text window and warning symbol/Red symbol and text message