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.
L-LINE Circuit Inspection
NOTE: Before disconnecting the SRS unit connector, do the 12 volt battery terminal disconnection procedure and wait for at least 3 minutes.
Test Procedure
- Preparation
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Body control module connector A (66P): disconnected
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SRS unit connector A (43P) : disconnected
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- Procedure
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Perform the inspection according to the following table.
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(Disconnected) Data link connector (DLC) (16P) female terminals
(Disconnected)Body control module connector A (66P) female terminals
IG Mode
Normal Conditions
L-LINE open wire inspection
OFF
There is less than 1 Ohm
Refer to the Open/Shorted Wire Inspection Description
for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
L-LINE shorted to ground inspection
OFF
Not shorted
Results
- If abnormal, there is a problem in the circuit.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.