9J1–40
RESTRAINT CONTROL SYSTEM
DTC 25 Driver Deployment Loop Short To Voltage
D09RX002
Circuit Description:
When the ignition switch is turned “ON", the Sensing
and Diagnostic Module (SDM) will perform tests to
diagnose critical malfunctions within itself. Upon
passing these tests, “ignition 1", and deployment loop
voltages are measured to ensure they are within their
respective normal voltage ranges.
The SDM monitors the voltage at “Driver Bag Low"
terminal “4" and “Passenger Bag Low" terminal “16" to
detect shorts to B+ in the air bag assembly circuits.
DTC Will Set When:
“Ignition 1" is in the normal operating voltage range.
This test is run once each ignition cycle and
“Continuous Monitoring". Once these conditions are
met and the voltage at “Driver Bag Low" is above a
specified value, Diagnostic Trouble Code (DTC) 25 will
set.
Action Taken:
SDM turns “ON" the “AIR BAG" warning lamp and sets
DTC 25 and also DTC 71
DTC Will Clear When:
The SDM is replaced.
DTC Chart Test Description:
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the SDM is
malfunctioning.
3. This test isolates the malfunction to one side of the
Supplemental Restraint System coil assembly yellow
2–pin connector at the base of steering column.
4. This test determines whether the malfunction is in
Circuit(CKT) IB05–YELLOW.