Seat Driver Forward Circuit Short To Battery
The driver's seat forward motor circuit is shorted directly to battery power, causing the ECU to detect abnormally high voltage where it shouldn't be. It's like a wire touching the positive terminal when it shouldn't, forcing electricity down the wrong path.
The ECU monitors the voltage signal on the driver seat forward motor circuit, expecting it to toggle between ground and a controlled voltage during normal operation. When a short to battery occurs, the circuit voltage remains at or near battery voltage (12-14V) continuously, triggering a fault. The ECU compares actual voltage against expected PWM signal patterns to detect this condition.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Circuit Voltage | 0-5V PWM signal with ground returns | Sustained 12-14V battery voltage |
| Signal Pattern | Intermittent switching with load variation | Constant high voltage with no switching |
Code B1767 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, B1767 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.