B0016

Circuit Description
When you first turn ON the ignition, the supplemental restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. Then the SDM performs the following continuous diagnostic tests on the deployment loops:
- Deployment loop voltage out of range test
- Deployment loop resistance measurement test

If the voltage out of range test detects a short to voltage condition, the resistance measurement test for that deployment loop will not be performed.

Conditions for Running the DTC
- Ignition 1 voltage is within the normal operating voltage range
- Passenger frontal deployment loop is not open.
- Passenger frontal deployment loop is not shorted to voltage.
- Passenger frontal deployment loop is not shorted to ground.

Conditions for Setting the DTC
Passenger frontal deployment loop resistance is less than 1.3 Ohms. for 500 milliseconds.

Action Taken When the DTC Sets
The SDM commands ON the AIR BAG warning lamp via Class 2 serial data.

Conditions for Clearing the DTC
- You can issue a CLEAR CODE command
- A history DTC will clear once 255 malfunction free ignition cycles have occurred

Diagnostic Aids
The following can cause an intermittent condition:
- A short between the passenger frontal high and the passenger frontal low circuits.
- A malfunctioning shorting bar on the supplemental restraint IP module 2-way connector.
- Refer to Testing for Intermittent and Poor Connections Testing for Intermittents and Poor Connections in Wiring Systems.

Steps 1 - 4:

Steps 5 - 7:

Steps 8 - 10:

Test Description
The number(s) below refer to the step number(s) on the diagnostic table.

2. This step checks the IP/passenger inflator module in-line connector for physical damage.
5. This step checks to see if there is a malfunctioning supplemental restraint passenger inflator module.
7. This step determines if there is a short between passenger frontal high and low deployment circuits or if there is a malfunctioning SDM.