Air Bag Indicator Circuit Malfunction (Driver)
Diagnostic Instructions
Circuit/System Description
When the ignition is turned ON, during the bulb check, the
driver air bag indicator will flash, and then turn OFF after the
bulb check. The inflatable restraint sensing and diagnostic module
(SDM) performs diagnostic tests on the SIR system during the bulb
check. If any malfunction exists the inflatable restraint sensing
and diagnostic module will request the instrument cluster to
illuminate the air bag indicator steady, via serial data. If a
preexisting malfunction exists, the air bag indicator will
illuminate steady immediately after the ignition is turned ON. If
the ignition 1 voltage is outside of the normal operating voltage
range of 9–16 V, the inflatable restraint sensing and
diagnostic module will command the instrument cluster to illuminate
the air bag indicator ON, even with no DTCs present, and then
disable all deployment loops.
Diagnostic Aids
| • |
A DTC B1370 may set if the
ignition 1 circuit is outside the 9–16 V range. |
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Verify inflatable restraint
sensing and diagnostic module DTCs are not set. |
⇒ If inflatable
restraint sensing and diagnostic module DTCs are set
Refer to
Diagnostic Trouble Code (DTC) List - Vehicle .
⇓ If inflatable
restraint sensing and diagnostic module DTCs are not
set
| 2. |
Verify the driver air bag
indicator is not flashing. |
⇒ If the indicator
is flashing
Refer to
Inflatable Restraint Sensing and Diagnostic Module Programming and
Setup ⇓ If the
indicator is not flashing
| 3. |
Verify the air bag indicators
turn ON and OFF when commanding the Instrument Cluster All
Indicators ON and OFF with a scan tool. |
⇒ If the air bag
indicator does not turn ON or OFF
Replace the P16 instrument cluster.
⇓ If the air bag
indicator does turn ON or OFF
| 4. |
Replace the K36 inflatable
restraint sensing and diagnostic module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the repair.
| • |
Control Module References for instrument cluster or inflatable
restraint sensing and diagnostic module replacement, programming
and setup |
|
