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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0040, B0041, or B0045: Left Front/Driver Side Deployment Loop Circuit >> Test Description
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Test Description

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

  1. 5:  Tests if the malfunction is caused by the side-impact module-LF or by the side-impact module-LF wiring harness.
  2. 7:  Determines which DTCs are present. If DTC B0040 s present, test the side-impact module-LF for a short between high circuits and low circuits. If DTC B0041 is present, test the side-impact module-LF high circuits and low circuits for an open and for high resistance. If DTC B0045 is present, test the side-impact module-LF high circuits and low circuits for a short-to-ground, or a short-to-voltage.
DTC B0040, B0041, or B0045

Step Action Yes No
Schematic Reference: SIR Schematics 
Connector End View Reference: SIR Connector End Views 
1 Did you perform a Diagnostic System Check-SIR? Go to Step 2  Go to Diagnostic System Check - SIR 
2
  1. Turn OFF the ignition.
  2. Disconnect the side-impact module-LF wiring harness in-line connector. Refer to Inflatable Restraint Side Impact Module Replacement - Front  .
  3. Inspect the component and harness sides of the in-line connector for the side-impact module-LF wiring harness for damage or corrosion that may cause the malfunction. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Does connector exhibit any signs of damage or corrosion?		 Go to Step 3  Go to Step 4 
3
  1. If the in-line connector for the side-impact module-LF wiring harness is damaged, the side-impact module-LF wiring harness must be replaced. Refer to Inflatable Restraint Side Impact Module Replacement - Front  .
  2. If the wiring harness side of side-impact module-LF in-line connector is damaged, replace the harness side of the connector. Refer to Connector Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 11  -
4
  1. Connect the J 38715-A  SIR Driver/Passenger Load Tool to the harness side of the side-impact module-LF wiring harness connector. See Special Tools and Equipment . Use PASSENGER INFLATOR connector.
  2. Turn ON the ignition, with the engine OFF.
  3. Use the scan tool to request SIR DTCs displayed.
Does the scan tool indicate that DTC B0040, B0041, or B0045 are current?		 Go to Step 6  Go to Step 5 
5 
  1. Turn OFF the ignition.
  2. Disconnect and remove the J 38715-A  . See Special Tools and Equipment .
  3. Connect the side-impact module-LF wiring harness in-line connector.
  4. Remove the side-impact module-LF connector. Refer to Inflatable Restraint Side Impact Module Replacement - Front  .
  5. Use J 38715-30A adapter to connect the J 38715-A  to the side-impact module-LF connector. See Special Tools and Equipment . Use PASSENGER INFLATOR connector.
  6. Turn ON the ignition, with the engine OFF.
  7. Use the scan tool to request SIR DTCs displayed.
Does the scan tool indicate that DTC B0040, B0041, or B0045 are current?		 Go to Step 9  Go to Step 8 
6
  1. Turn OFF the ignition.
  2. Disconnect and remove both the J 38715-A  and adapter. See Special Tools and Equipment .
  3. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement  .
  4. Inspect the SDM connector for damage or corrosion that may cause a malfunction in the side-impact module-LF high and/or low circuits. 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 7 
7 
  1. If DTC B0040 is present, test the side-impact module-LF for a short between the high and low circuits.
  2. If DTC B0041 is present, test the side-impact module-LF high and low circuits for an open and for high resistance.
  3. If DTC B0045 is present, test the side-impact module-LF high and low circuits for a short to ground and for a short to voltage.
  4. If any of the above conditions exist, refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
8
  1. Turn OFF the ignition.
  2. Replace the side-impact module-LF. Refer to Inflatable Restraint Side Impact Module Replacement - Front  .
Did you complete the replacement?		 Go to Step 11  -
9
  1. Turn OFF the ignition.
  2. Replace the side-impact module-LF wiring harness. Refer to Wiring Harness Replacement - Front Door .
Did you complete the replacement?		 Go to Step 11  -
10
  1. Turn OFF the ignition.
  2. Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement  .
Did you complete the replacement?		 Go to Step 11  -
11
  1. Connect all SIR components.
  2. Turn ON the ignition, with the engine OFF.
  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
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