B1701

Step 1: Perform visual inspection of the driver seat recline switch assembly for physical damage, broken components, or signs of liquid intrusion. Operate the switch manually to check for mechanical binding or abnormal feel.

Step 2: Using a digital multimeter, test the recline forward switch for proper continuity when activated and open circuit when released. Compare readings to manufacturer specifications (typically 0-5 ohms when closed, infinite ohms when open).

Step 3: Disconnect the seat switch connector and inspect pins for corrosion, bent terminals, or pushed-back pins. Check wiring harness under the seat for chafing, cuts, or damage from seat track movement. Measure voltage supply to switch (typically 5-12V) and ground continuity.

Step 4: With switch disconnected, check circuit resistance between switch connector and BCM connector using wiring diagram. Resistance should be less than 5 ohms. Also check for short to ground (should be infinite ohms) and short to power (should be 0V with key off).

Step 5: If wiring and connections test good, substitute a known-good switch assembly or install new switch and retest operation. Clear codes and verify proper function through multiple recline cycles.

Step 6: If all components test properly but code persists, test BCM power and ground circuits, then consider BCM replacement or reprogramming if all other components are verified functional.