Retrieving Diagnostic Trouble Codes Using AIR Bag Test Connector (Onboard Diagnostics)

If a Tech 2 scan tool is not available, on-board diagnostics can be performed through AIR BAG warning light. Use a jumper wire to connect test connector to ground. See Figure. Sensing and Diagnostic Module (SDM) displays DTC's by flashing AIR BAG warning light. Each DTC displayed consists of a number of flashes which represent the first digit, a one second pause and then a number of flashes which represent the second digit of the DTC. The 2 digit code will correspond to last 2 digits of DTC. A pause of 3 seconds will occur before next DTC is displayed. Each DTC is flashed once before moving to next one.