Seat Switch Signal Circuit Low

The seat switch is sending a voltage that's too low (below about 0.5 volts) to the control module, which means the system thinks there's no input from the seat switch when there should be.

The computer expects a voltage signal from the seat switch circuit to be above 0.5 volts when the seat is occupied. Instead, it detects a voltage reading below this threshold, indicating a possible fault in the circuit.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 11. Check the wiring and connectors at the seat switch for any visible damage or disconnection. Decision: If damaged, repair wiring/replace connectors. If intact, proceed to step 2.
2. 22. Use a multimeter to measure the voltage at the seat switch connector. You should see between 0.5 and 5.0 volts when the switch is activated. Decision: If voltage is low or absent, proceed to inspect the switch itself. If voltage is correct, continue to step 3.
3. 33. Inspect the seat switch itself for any obvious signs of failure (like physical damage or stuck position). Decision: If faulty, replace the seat switch. If functional, check ground connections.
4. 44. Check the ground wire at the control module for continuity. Voltage should read close to 0 volts with the switch inactive. Decision: If ground is compromised, repair. If good, further diagnostics may be required.

• Damaged wiring or connectors in the seat switch circuit.
• Faulty seat switch that is stuck or damaged.
• Ground connection issues affecting the seat switch circuit.

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