Test Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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.
- 2:
Inspects the LF side impact module in-line connector.
- 4:
Tests for a malfunctioning LF side impact module.
- 6:
If DTC B0040 is present, test for a short between the LF side impact module high and LF side impact module low control circuits. If DTC B0041 is present, test for an open or high resistance in the LF side impact module high and LF side impact module low control circuits. If DTC B0045 is present, test for a short to ground or voltage in the LF side impact module high and LF side impact module low control circuits.
DTC B0040, B0041, or B0045
| Step |
Action |
Yes |
No |
| Schematic Reference: SIR Schematics |
| 1 |
Did you perform the Diagnostic System Check - SIR? |
Go to Step 2 |
Go to Diagnostic System Check - SIR |
| 2 |
- Turn OFF the ignition.
- Disconnect the LF side impact module in-line connector. Refer to Inflatable Restraint Side Impact Module Replacement - LH .
- Inspect both halves of the connector for the following conditions:
- Corrosion
- Terminal damage
- Poor connections/terminal tension
Do the connectors exhibit any signs of corrosion, terminal damage, or poor connections? |
Go to Step 3 |
Go to Step 4 |
| 3 |
- If the LF side impact module harness connector exhibits any of the above conditions, replace the side impact module wiring harness. Refer to Inflatable Restraint Side Impact Module Replacement - LH .
- Replace the harness side of the LF side impact module in-line connector. Refer to Connector Repairs
in Wiring Systems.
Did you complete the replacement? |
Go to Step 9 |
- |
| 4 |
- Install the J 38715-A
SIR Load Tool to the harness side of the LF side impact module in-line connector. See Special Tools and Equipment .
- Turn ON the ignition, with the engine OFF.
- With a scan tool, request the SIR DTC display.
Does the scan tool indicate that either DTC B0040, B0041, or B0045 is current? |
Go to Step 5 |
Go to Step 8 |
| 5 |
- Turn OFF the ignition.
- Remove the J 38715-A
. See Special Tools and Equipment .
- Disconnect the SDM connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
- 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 9 |
Go to Step 6 |
| 6 |
- If DTC B0040 is present, test the LF side impact module high and LF side impact module low control circuits for a short. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems.
- If DTC B0041 is present, test the LF side impact module high and LF side impact module low control circuits for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems.
- If DTC B0045 is present, test the LF side impact module high and LF side impact module low control circuits for a short to ground or voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems.
Did you find and correct the condition? |
Go to Step 9 |
Go to Step 7 |
| 7 |
Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
Did you complete the replacement? |
Go to Step 9 |
- |
| 8 |
Replace the LF side impact module. Refer to Inflatable Restraint Side Impact Module Replacement - LH .
Did you complete the replacement? |
Go to Step 9 |
- |
| 9 |
- Reconnect all SIR system components.
- Verify that all components, connectors and CPAs are properly mounted.
- Use the scan tool in order to clear the DTCs.
- 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 |