Circuit/System Testing
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF. Scan tool disconnected. Disconnect the appropriate harness connector listed below:
- F109E Seat Belt Buckle Pretensioner - 2nd Row Left
- F109F Seat Belt Buckle Pretensioner - 2nd Row Right
- Test for greater than 25 Ω between the control circuit terminals 1 and 2.
- If 25 Ω or less
- Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Test for infinite resistance between the two control circuits.
- If less than infinite resistance, repair the short between the two circuits.
- If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
NOTE:Some connectors may be equipped with shorting bars as a safety component to prevent accidental deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar.
- Go to next step: If greater than 25 Ω
- Ignition ON.
- Test for less than 11 V between the control circuit terminals listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
- If 11 V or greater
- Ignition OFF. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON
- Test for less than 1 V between the control circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Go to next step: If less than 11 V
- Ignition OFF.
- Test for greater than 25 Ω between the control circuit terminals listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
- If 25 Ω or less
- Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Test for infinite resistance between the control circuit and ground.
- If less than infinite resistance, repair the short to ground on the circuit.
- If infinite resistance, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Go to next step: If greater than 25 Ω
- Install a 3 A fused jumper wire between the control circuit terminals 1 and 2. Ignition ON.
- Verify the appropriate scan tool Deployment Loop Resistance parameter is less than 2 Ω.
- If 2 Ω or greater
- Ignition OFF. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Test for less than 2 Ω in each control circuit end to end.
- If 2 Ω or greater, repair the open/high resistance in the circuit.
- If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- Go to next step: If less than 2 Ω
- Ignition OFF, connect the harness connector at the F109E Seat Belt Buckle Pretensioner - 2nd Row Left or F109F Seat Belt Buckle Pretensioner - 2nd Row Right, press in the CPA (if equipped) until an audible and/or tactile click is heard.
- Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
- Verify DTC B0032 or B0039 is not set.
- If DTC B0032 or B0039 is set
Replace the appropriate F109E Seat Belt Buckle Pretensioner - 2nd Row Left or F109F Seat Belt Buckle Pretensioner - 2nd Row Right.
- Go to next step: If DTC B0032 or B0039 is not set
- If DTC B0032 or B0039 is set
- All OK.