Service (SIR) Supplemental inflatable Restraint

This is mostly for the 90 guys. I have never come across an issue on the 91-96 Corvettes for airbags. I have included the info for the later cars as well.



For 90-93 Cars jumper A to K on the ALDL and the INFL REST light will flash



For 94-95 Cars, jumper Terminal 4 to 12 on the ALDL and enter the CCM diagnostics, or use a Tech1



Codes for 90
14 Front Sensor #1 (LH); Short to Ground
15 Front Sensor #1 (LH); Open Circuit
16 Front Sensor #1 (LH); Sensor Fault
24 Front Sensor #1 (RH); Short to Ground
25 Front Sensor #1 (RH); Open Circuit
26 Front Sensor #1 (RH); Sensor Fault
31 Inflator Squib; Current leakage to Battery
32 Inflator Squib; Current shorted to battery voltage
33 Inflator Squib; Current leakage to ground
34 Inflator Squib; Current shorted to ground
35 Inflator Squib; Open circuit
36 Inflator Squib; Squib fault
41 Indicator lamp circuit; Shorted to battery or ground
42 Indicator lamp circuit; Open circuit
51 Diagnostic unit faulty
52 Firing sequence confirmation set
53 Firing current confirmation set
54 Squib current has flowed

Codes for 91 & 92 & 93

21 Steering Column Resistance Too High
22 Steering Column Resistance Too Low
23 Steering Column Circuit Voltage Too High
24 Steering Column Circuit Voltage Too Low
25 Short to Battery in Steering Column
26 Open in Steering Column Circuit
31 Open 36 VLR to Deployment Loop
32 Grounded 36 VLR to Deployment Loop
33 Diode B Shorted in Wiring Harness
34 Open in Ignition 1 Feed to Deployment Loop
35 Discriminating Sensor Open
41 Deployment Loop Energy Reserve Voltage Fault
42 Deployment Loop Energy Reserve Voltage Fault
51 Accident Detected
52 EEPROM Accident Data Area Full
61 Force Low or “INFL REST” Warning Lamp Circuit
71 Internal DERM Fault

Codes for 94 & 95

14 Dual Pole Arming Sensor Disconnected
15 Passenger Initiator Circuit Resistance High
16 Passenger Initiator Circuit Resistance Low
17 Passenger Initiator Circuit Open
18 Discriminating Sensor Interconnect Open
19 Passenger Initiator Circuit Voltage High
21 Driver Initiator Circuit Resistance High
22 Driver Initiator Circuit Resistance Low
23 Driver Initiator Circuit Voltage High
24 Driver Initiator Circuit Voltage Low
25 Initiator Circuit Short to Ignition
26 Driver Initiator Circuit Open
28 Current Sink or Source Failure
31 Driver Loop Energy Reserve Feed Open
34 Dual Pole Arming Sensor Ignition Feed Open
35 Discriminating Sensor Open or Missing
36 Passenger Loop Energy Feed Open
42 Loop Energy Reserve Volatage Low
43 Driver Source Feed Low
44 Passenger Source Feed Low
51 Frontal Crash Detected
52 Data Area Full
53 Driver Side Low High Resistance
54 Passenger Side Low High Resistance
55 DERM Incompatibility
61 SIR Indicator Circuit Failure
62 Redundant Indicator Circuit Failure
71 and or 75 Internal DERM Fault
81 Driver Ignition Diode Open
82 Passenger Ignition Diode Open
83 Driver Reserve Diode Shorted
84 Passenger Reserve Diode Shorted