LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2004 >> H2 4D Utility Pickup >> Repair and Diagnosis >> External Pages >> Different car >> Section 712 (Sir) >> Diagnostic Information and Procedures >> DTC B0091: I/P Module Disable Switch >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3:  Observes the state of the I/P module disable switch, normal state being ON.
  2. 4:  Tests for a malfunctioning I/P module disable switch.
  3. 5:  Tests for a malfunctioning SDM.
  4. 6:  Tests for a short in the I/P module disable switch signal circuit.
  5. 7:  Tests for a short in the I/P module suppression indicator control circuit.
DTC B0091

Step Action Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR Connector End Views 
1 Did you perform the Diagnostic System Check - SIR? Go to Step 2  Go to Diagnostic System Check - SIR 
2
  1. Turn OFF the ignition.
  2. Disconnect the I/P module disable switch. Refer to Inflatable Restraint Instrument Panel (I/P) Module Disable Switch Replacement .
  3. Inspect the I/P module disable switch 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 11  Go to Step 3 
3 
  1. Reconnect the I/P module disable switch connector.
  2. Turn the I/P module disable switch to the OFF position.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the I/P module disable switch (active switch) data parameter in the SDM inputs list.
Does the scan tool indicate that the I/P module disable switch (active switch) is DISABLED?		 Go to Step 4  Go to Step 5 
4 
  1. Turn the I/P module disable switch to the ON position.
  2. With a scan tool, observe the I/P module disable switch (active switch) data parameter.
Does the I/P module disable switch (active switch) data parameter change state?		 Go to Diagnostic Aids Go to Step 5 
5 
  1. Turn OFF the ignition.
  2. Disconnect the I/P module disable switch. Refer to Inflatable Restraint Instrument Panel (I/P) Module Disable Switch Replacement .
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the I/P module disable switch (active switch) data parameter.
Does the scan tool indicate that the I/P module disable switch (active switch) is DISABLED?		 Go to Step 10  Go to Step 6 
6  Test the I/P module disable switch signal circuit for a short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 7 
7  Test the I/P module suppression indicator control circuit for a short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 8 
8
  1. Turn OFF the ignition.
  2. Disconnect the SDM connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
  3. 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 11  Go to Step 9 
9 Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
Did you complete the replacement?		 Go to Step 11  -
10 Replace the I/P module disable switch. Refer to Inflatable Restraint Instrument Panel (I/P) Module Disable Switch Replacement .
Did you complete the replacement?		 Go to Step 11  -
11
  1. Reconnect all SIR system components.
  2. Verify that all components, connectors and 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
scientia non olet · About LEMON Manuals