Test Description

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. 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.

4: Tests to see if the malfunction is caused by the roof rail module-left.
6: Tests to see what DTCs are present. If DTC B0040 is present, test the roof rail module-left for a short between high and low circuits. If DTC B0041 is present, test the roof rail module-left high and low circuits for an open and for high resistance. If DTC B0045 is present, test the roof rail module-left high and low circuits for a short to ground and for 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 the Diagnostic System Check - SIR?	Go to Step 2	Go to Diagnostic System Check - SIR
2	Turn OFF the ignition. Disconnect roof rail module-left in-line connector. Refer to Inflatable Restraint Roof Rail Module Replacement - Left . Inspect the component and harness sides of the in-line connector for the roof rail module-left 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 the connector exhibit any signs of damage or corrosion?	Go to Step 3	Go to Step 4
3	If the connector for the roof rail module-left is damaged, the roof rail module-left must be replaced. Refer to Inflatable Restraint Roof Rail Module Replacement - Left . If the wiring harness side of the roof rail module-left 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 9	-
4	Use J 38715-30A adapter to connect the J 38715-A SIR Driver/Passenger Load Tool to the harness side of the roof rail module-left connector. See Special Tools and Equipment . Use PASSENGER INFLATOR connector. Turn ON the ignition, with the engine OFF. With the scan tool, request the SIR DTC display. Does the scan tool indicate that DTC B0040, B0041, or B0045 are current?	Go to Step 5	Go to Step 7
5	Turn OFF the ignition. Disconnect and remove both the J 38715-A and adapter. See Special Tools and Equipment . Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Inspect the SDM connector for damage or corrosion that may cause a malfunction in the roof rail module-left 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 9	Go to Step 6
6	If DTC B0040 is present, test the roof rail module-left for a short between the high and low circuits. If DTC B0041 is present, test the roof rail module-left high and low circuits for an open or for high resistance. If DTC B0045 is present, test the roof rail module-left high and low circuits for a short to ground and for a short to voltage. All the above conditions refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 8
7	Turn OFF the ignition. Replace the roof rail module-left. Refer to Inflatable Restraint Roof Rail Module Replacement - Left . Did you complete the replacement?	Go to Step 9	-
8	Turn OFF the ignition. Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Did you complete the replacement?	Go to Step 9	-
9	Connect all SIR components. Turn ON the ignition, with the engine OFF. 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