Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Testing
- Ignition OFF, scan tool disconnected, disconnect the appropriate F124 Seat Belt Load Limiter harness connector. It may take up to 2 minutes for all vehicle systems to power down.
- Test for greater than 25 Ω between the control circuit terminals 1 and 2.
- If 25 Ω or less
- Disconnect the X1 harness connector at the K36 Inflatable Restraint and Sensing 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 and Sensing Diagnostic Module.
NOTE:Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator 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 each control circuit terminal listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
- If 11 V or greater
- Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint and Sensing 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 and Sensing Diagnostic Module.
- Go to next step: If less than 11 V
- Ignition OFF.
- Test for greater than 25 Ω between each control circuit terminal listed below and ground:
- Control circuit terminal 1
- Control circuit terminal 2
- If 25 Ω or less
- Disconnect the X1 harness connector at the K36 Inflatable Restraint and Sensing 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 and Sensing 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 scan tool Deployment Loop Resistance parameter is less than 2 Ω.
- If 2 Ω or greater
- Ignition OFF, disconnect the X1 harness connector at the K36 Inflatable Restraint and Sensing 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 and Sensing Diagnostic Module.
- Go to next step: If less than 2 Ω
- Ignition OFF, connect the harness connector at the F124 Seat Belt Load Limiter, 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 B003E or B003F is not set.
- If DTC B003E or B003F is set
Replace the F124 Seat Belt Load Limiter.
- Go to next step: If DTC B003E or B003F is not set
- If DTC B003E or B003F is set
- All OK.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.