B1707
Seat Driver Recline Rearward Switch Circuit Short To Battery
Body Chassis/Safety Seat Control Circuit 🟢 Low — Fix at next service
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What This Actually Means
In plain language — no jargon

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.

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Symptoms You May Notice
3 known symptoms for this code
Driver seat recline control inoperative or stuck
Seat recline switch unresponsive to button inputs
Dashboard warning light or seat fault indicator illuminated
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Embedded Systems Insight
What the ECU/ECM is actually computing

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.

Voltage & Parameter Thresholds

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
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Driver seat recline switch connector
Inspect and reseat the switch connector under the seat to eliminate loose pin contact causing the short.
2
Wiring harness to recline switch
Visually inspect the wiring for pinched, damaged, or exposed insulation creating an unintended short to the battery circuit.
3
Recline switch assembly
Replace the faulty switch if wiring inspection is clean and connector reseating does not resolve the fault code.