GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Optra 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC 013

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.

Upon passing this 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 deployment loops.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC 013 Right Pretensioner Deployment Loop Resistance Too High

Conditions for Running the DTC

Ignition voltage is within the normal operating voltage range.

Conditions for Setting the DTC

The resistance of the right belt pretensioner deploy loop is over 3.1 ohms.

Action Taken When the DTC Sets

The SDM commands the AIR BAG indicator ON.

Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

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.

Schematic Reference: SIR Schematics

Connector End View Reference: SIR Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

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 right seat belt pretensioner module.

Is the connector disconnected?

--

Go to Step 3

Go to Step 4

3

Connect the right seat belt pretensioner module connector.

Did you complete the repair?

--

Go to Step 8

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4
  1. Disconnect the electrical connector for the right seat belt pretensioner 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 right seat belt pretensioner module.

  3. Connect an ohmmeter to the terminals on the SDM side of the wiring harness connector for the right seat belt pretensioner module.

Does the ohmmeter show the specified value?

0 Ω

Go to Step 5

Go to Step 7

5
  1. Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement.
  2. Connect the negative battery cable.
  3. Use the scan tool in order to clear the DTCs.
  4. Perform the Diagnostic System Check - Vehicle.

Is DTC 013 still shown as a current fault?

--

Go to Step 6

Go to Step 8

6

Replace the right seat belt pretensioner module. Refer to Front Seat Belt Replacement.

Did you complete the repair?

--

Go to Step 8

--

7

Replace the supplemental inflatable restraints (SIR) wiring harness.

Did you complete the repair?

--

Go to Step 8

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8
  1. Reconnect all SIR components.
  2. Verify that all components, connectors and connector position assurances (CPAs) are properly mounted.
  3. Use the scan tool in order to clear the DTCs.
  4. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.

Does the DTC reset?

--

Go to Step 2

System OK