Retrieving Diagnostic Trouble Codes Using Air Bag Monitor Connector (Onboard Diagnostics)

If a Tech 1 scan tool is not available, on-board diagnostics can be performed through AIR BAG warning light. Use a jumper wire to connect diagnostic switch to ground. See Figure. Sensing and Diagnostic Module (SDM) displays DTCs by flashing AIR BAG warning light. Each DTC displayed consists of a number of flashes which represent the first digit, a 1.2 seconds pause and then a number of flashes which represent the second digit of the DTC. A pause of 3.2 seconds will occur before next DTC is displayed. Each DTC is flashed once before moving to next one.