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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
DTC 004

Step Action Values Yes No
CAUTION: Refer to SDM Voltage After Ignition Is Turned OFF Caution in Cautions and Notices.
CAUTION: Refer to Sensing and Diagnostic Module Handling Caution in Cautions and Notices.
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 Visually inspect the supplemental inflatable restraint (SIR) harness for damage.
Is there any visible damage to the SIR harness?		 - Go to Step 3  Go to Step 4 
3
  1. Replace the SIR wiring harness.
  2. Reconnect the negative battery cable.
Is your repair complete?		 - Go to Diagnostic System Check - SIR  -
4
  1. Disconnect the negative battery cable.
  2. Remove the driver air bag module.
  3. Place the driver air bag module in a secure position with the decorative surface facing upward.
  4. Disconnect the electrical connector at the sensing and diagnostic module (SDM).

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

  5. Use a multimeter to measure the voltage at one of the terminals on the wiring harness connector for the driver air bag module.
Is the voltage greater than the specified value?		 0 V Go to Step 7  Go to Step 5 
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 004 still shown as a current fault?		 - Go to Step 6  System OK
6
  1. Replace the driver air bag module.
  2. Reconnect the negative battery cable.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
7
  1. Disconnect the clock spring wiring harness at the lower steering column.

    The shorting bar at the disconnected SDM connector will create a complete circuit between the wires from the clock spring.

  2. Using a multimeter, measure the voltage at one of the terminals on the SDM side of the clock spring connector.
Did the voltmeter indicate the specified value?		 0 V Go to Step 8  Go to Step 3 
8
  1. Replace the clock spring.
  2. Reconnect the negative battery cable.
Is the repair complete?		 - Go to Diagnostic System Check - SIR  -
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