Flash DTC Diagnostics

Flash DTC diagnostics read current DTCs and determine when history DTCs are present. Flash DTC diagnostics do not clear DTCs or read history DTCs. You can enable flash DTC diagnostics by jumping the Air Bag Diagnostic Connector terminals with the ignition switch set to the ON position. This action pulls the SDM terminal 12 to ground and signals the SDM to enter the flash DTC diagnostic display mode.

The SDM displays the DTCs by flashing the AIR BAG warning lamp. Each DTC that is displayed consists of the following:

1. A series of flashes which represent the tens (first) DTC digit
2. A half-second pause
3. A series of flashes which represent the ones (second) DTC digit

Each DTC is flashed once before moving on to the next DTC. After the tool displays all DTCs, the entire DTC sequence is continually repeated until you remove the jumper from the Air Bag Diagnostic Connector.

Two special DTCs exist, DTC 12 and DTC 13. DTC 12 is always the first DTC displayed when the flash DTC mode is enabled. DTC 12 is not an SIR fault indication. DTC 12 is an indication that the flash DTC mode is enabled. When no current or history DTCs are present, the SDM displays DTC 12 until you remove the jumper from the Air Bag Diagnostic Connector. Flash DTC 13 displays only if noncurrent history DTCs are present. Use a scan tool for reading history DTCs.