9A1-26 RESTRAINT CONTROL SYSTEM
DTC B0019 (Flash Code 19) Passenger Air Bag Squib Circuit Short to Battery
Voltage
RTW79ALF000301
Circuit Description
When the ignition switch is turned “ON”, the SRS
control unit will perform tests to diagnose critical
malfunctions within itself. Upon passing these tests,
“Ignition 1”, and the deployment loop voltages are
measured to ensure they are within their respective
normal voltage ranges.
The SRS control unit monitors the voltages at the
“Driver Bag Low” terminal “13” and “Passenger Bag
Low” terminal “16” to detect short to ground/+B in the air
bag assembly circuits.
DTC Will Set When
“Ignition 1" is in the normal operating voltage range.
The voltage at “Passenger Bag Low" is above a
specified value,
DTC B0019 will set.
Action Taken
The SRS control unit turns “ON” the “SRS” warning
lamp and sets a diagnostic trouble code.