DTC 16 - Passenger Initiator Circuit Resistance Low: Description

When the ignition is turned ON, the SDM will perform tests to diagnose critical malfunctions within itself. Upon passing these tests Ignition 1, 36 VLR and deployment loop voltages are measured to ensure they are within their normal voltage ranges. The SDM then proceeds with the "Current Source Diagnostics". "Passenger Side LO" terminal A6 is grounded through a resistor and the passenger current source connected to "Passenger Side HI" terminal A5 allows a known amount of current to flow. By monitoring the voltage difference between "Passenger Side HI" and "Passenger Side LO" the SDM calculates the combined resistance of the passenger inflator module, harness wiring circuits 1403 and 1404 and connector terminal contact.