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.
Diagnosis System
- CHECK DLC3
- Check the DLC3 (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).
- INSPECT BATTERY VOLTAGE
- Measure the battery voltage.
Standard Voltage: 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
- Measure the battery voltage.
- CHECK DIAGNOSIS
HINT
If there is a malfunction in the pulse sensor, manually operating the multiplex network master switch assembly or multiplex network switch assembly will cause the multiplex network master switch assembly or multiplex network switch assembly LED illumination to blink. The LED illumination continues to blink for 45 seconds or until the engine switch is turned off. After 45 seconds, the multiplex network master switch assembly or multiplex network switch assembly LED illumination remains on.
- Multiplex network master switch assembly
- Turn the engine switch on (IG)
- Manually operate the multiplex network master switch assembly at each door
- Check the blinking pattern of the AUTO light is as shown in the LED illustration.
- Multiplex network switch assembly (Front passenger, rear LH or rear RH side)
- Turn the engine switch on (IG).
- Manually operate the multiplex network switch assembly at each door
- Check the blinking pattern of the AUTO light is as shown in the LED illustration.
- Multiplex network master switch assembly
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.
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