Seat Driver Recline Rearward Switch Circuit Short To Battery
The seat recline motor switch is stuck in the "on" position, like a light switch taped down, causing the ECU to detect constant battery voltage instead of normal on-off signals. This prevents proper seat adjustment control and triggers a fault code.
The ECU monitors the voltage signal from the driver seat recline rearward switch circuit. Normally, the switch toggles between ground (0V) and open/floating state when pressed. A short to battery creates a constant high voltage signal (12V) that the ECU recognizes as abnormal, indicating a wiring or switch failure.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Switch Signal Voltage | 0V (activated) or floating/open (inactive) | Constant 12V battery voltage present |
| Circuit Resistance | Low resistance when activated, high when inactive | Continuous low resistance to battery rail |
Code B1707 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B1707 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.