LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Impala Base, 3.8 K >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Sir Diagnostic System Check >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Observe AIR BAG warning light while turning ignition on. If AIR BAG warning light flashes 7 times, go to next step. If AIR BAG warning light does not flash 7 times, inspect vehicle for damage to wiring system, visible body damage, faulty or intermittent electrical connections or addition of aftermarket devices which could affect SIR operation. Diagnose AIR BAG warning light malfunction. See AIR BAG WARNING LIGHT CIRCUIT MALFUNCTION .
  2. Connect scan tool to Data Link Connector (DLC), located below left side of instrument panel. If scan tool powers up, go to next step. If scan tool does not power up, inspect Class 2 data link communications circuits. See WIRING DIAGRAMS .
  3. Turn ignition on. Using scan tool, attempt to communicate with Sensing and Diagnostic Module (SDM). If scan tool communicates with SDM, go to next step. If scan tool does not communicate with SDM, inspect Class 2 data link communications circuits.
  4. Select SIR DTC display on scan tool. If scan tool displays current or history DTC's, go to next step. If scan tool does not display DTC's, system is okay.
  5. Select SIR DTC display on scan tool. If scan tool displays DTC's that begin with "U", inspect Class 2 data link communication circuits and components. If other DTC's are displayed, go to next step.
  6. If scan tool displays DTC B1000, go to DTC B1000: INTERNAL SDM MALFUNCTION . If other DTC's are displayed, diagnose applicable DTC's. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION  table.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

Trouble Code Possible Cause
B0016  Passenger deployment loop resistance low
B0017  Passenger deployment loop resistance high
B0018  Passenger deployment loop short to ground or voltage
B0022  Driver deployment loop resistance low
B0024  Driver deployment loop short to ground or voltage
B0026  Driver deployment loop resistance high
B0051  Deployment commanded
B0053  Deployment commanded with loop malfunction
B1000  Internal SDM malfunction
B1001  Option configuration error
scientia non olet · About LEMON Manuals