GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Aveo 🢒 Restraints 🢒 SIR 🢒 DTC 005

Circuit Description

When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself.

The test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.

The SDM inspects the wiring connection to the passenger air bag module by letting the infinitesimal current flow through the internal circuit and verify the resistance.

Conditions for Setting the DTC

The resistance of passenger air bag deployment loop is over 2.8 ohms.

Step

Action

Values

Yes

No

Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section.

Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section.

 

1

Perform the Diagnostic System Check - SIR.

Is the Diagnostic System Check - SIR complete?

--

Go to Step 2

Go to Diagnostic System Check - SIR

2
  1. Disconnect the negative battery cable.
  2. Wait 1 minute for the sensing and diagnostic module (SDM) capacitor to discharge.
  3. Examine the wiring and the connector at the passenger side air bag module.

Is the connector disconnected?

--

Go to Step 3

Go to Step 4

3
  1. Reconnect the passenger side air bag module connector.
  2. Reconnect the negative battery cable.

Is the repair complete?

--

Go to Diagnostic System Check - SIR

--

4
  1. Disconnect the electrical connector for the passenger side air bag module.
  2. Disconnect the electrical connector at the SDM.

    3. The shorting bar at the disconnected SDM connector will create a complete circuit between the wires from the passenger air bag module.

  3. Connect an ohmmeter to the terminals on the SDM side of the wiring harness connector for the passenger side air bag module.

Does the ohmmeter show the specified value?

0 ohms

Go to Step 5

Go to Step 7

5
  1. Replace the SDM.
  2. Reconnect the negative battery cable.
  3. Set the scan tool for CODE ERASE.
  4. Perform the Diagnostic System Check - SIR.

Is DTC 005 still shown as a current fault?

--

Go to Step 6

System OK

6
  1. Replace the passenger side air bag module.
  2. Reconnect the negative battery cable.

Is the repair complete?

--

Go to Diagnostic System Check - SIR

--

7
  1. Replace the supplemental inflatable restraint (SIR) wiring harness.
  2. Reconnect the negative battery cable.

Is the repair complete?

--

Go to Diagnostic System Check - SIR

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