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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISRESTRAINTSAIR BAG, SRSSUPPLEMENTAL INFLATABLE RESTRAINT SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B0090TEST DESCRIPTION
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Test Description

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Test Description

The numbers below refer to the step numbers on the diagnostic table:

  1. 5:  This step tests for an open or high resistance in the IPM disable switch power feed circuit.
  2. 6:  This step tests for an open or high resistance in the IPM disable switch ground circuit.
  3. 8:  This step tests for an open or high resistance in the IPM disable switch signal circuit.
  4. 9:  This step tests for a short in the IPM disable switch signal circuit.
  5. 10:  This step tests for short in the IPM suppression indicator control circuit.
  6. 11:  This step tests for an open or high resistance in the IPM suppression indicator control circuit.
DTC B0090

Step Action Values Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Turn OFF the ignition.
  2. Turn the instrument panel module (IPM) disable switch to the ON position.
  3. Turn ON the ignition, with the engine OFF.
Does the IPM disable switch ON indicator illuminate in the IPM disable switch?		 - Go to Step 7  Go to Step 3 
3
  1. Turn OFF the ignition.
  2. Disconnect the IPM disable switch connector. Refer to Inflatable Restraint Instrument Panel (I/P) Module Disable Switch Replacement .
  3. Inspect the IPM disable switch connector for corrosion or damage. Refer to Testing for Intermittent Conditions and Poor Connections andConnector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 4 
4
  1. Disconnect the sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
  2. Inspect the SDM connector for corrosion or damage. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 5 
5  Test the IPM disable switch power feed circuit for an open or high resistance. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 6 
6  Test the IPM disable switch ground circuit for an open or high resistance. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 7 
7
  1. Install a scan tool.
  2. Turn the IPM disable switch to the ON position.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the SIR data list.
Does the IPM disable switch (active switch) show the specified state?		 Enabled Go to Step 9  Go to Step 8 
8 
  1. Turn OFF the ignition.
  2. Test the IPM disable switch signal circuit for an open or high resistance. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 9 
9  Test the IPM disable switch signal circuit for a short. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 10 
10  Test the IPM suppression indicator control circuit for a short. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 11 
11  Test the IPM suppression indicator control circuit for an open or high resistance. Refer to Circuit Testing and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
12 Replace the IPM disable switch. Refer to Inflatable Restraint Instrument Panel (I/P) Module Disable Switch Replacement .
Did you complete the repair?		 - Go to Step 13  -
13
  1. Reconnect all SIR system 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
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.