B2365

Code

Other B — Body

B-pillar Power Sliding Door Open/Close Switch Input Ckt Short to Gnd

Brand: Other

Type: B — Body

Views: UK: 27 EN: 34 RU: 25

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Damaged/chafed wiring in B‑pillar harness contacting ground
Corroded or bent connector pins at the switch or module
Water intrusion in door or B‑pillar connector
Faulty open/close switch (internal short)
Shorted connector due to foreign debris or metal contact
Control module internal input short to ground

Symptoms

Power sliding door(s) inoperative or will not respond to B‑pillar switch
Door open/close switch reading incorrect on body/control module
Intermittent door operation or false open/close inputs
Related warning message or indicator on dash
Possible blown fuse or disabled auto door functions

What to check

Scan for current and pending codes; record freeze‑frame and related door codes
Visual inspection of B‑pillar harness, switch and connectors for damage, corrosion or water
Check fuses and relays for power to sliding door system
Backprobe switch connector and measure signal voltage/continuity
Wiggle test harness while observing signal to reproduce intermittent shorts
Disconnect the switch and re-scan to see if code clears or changes

Signal parameters

Reference voltage supplied by module: typically ~5 V (some systems use 12 V). Check vehicle spec.
Switch open = signal ~reference voltage (~5 V); switch closed = signal pulled near 0 V (ground).
With switch disconnected, signal pin should NOT be shorted to chassis ground; expected resistance to ground = very high (kΩ to OL).
Short to ground condition: measured voltage near 0 V at signal pin with ignition ON and/or continuity to ground close to 0 Ω.
Closed switch continuity (between signal and ground or switch return) typically

Diagnostic algorithm

Retrieve DTC(s) and freeze frame data with a scan tool. Note related door/body DTCs.
Perform a careful visual inspection of the B‑pillar area, harness, and switch connectors for chafing, damage, corrosion, or water.
With ignition ON, backprobe the switch signal pin. Measure voltage relative to chassis ground. Compare to expected reference voltage from manufacturer (typ. ~5 V).
With ignition ON, disconnect the switch connector. Recheck the signal pin at the harness side: if the pin now shows the short to ground (near 0 V) or continuity to ground, the wiring or module is shorted; if the pin is open/high, the switch likely is shorting when connected.
Measure resistance between the signal pin (harness side) and chassis ground with ignition OFF. Normal = very high/OL. Low resistance indicates short to ground in wiring or connector.
Perform a wiggle test along the harness while monitoring the signal to reproduce intermittent shorts. Inspect where the harness passes through the door hinge/B‑pillar — common flex points.
Inspect and clean connector pins; repair or replace any corroded connectors. Repair damaged wiring using proper splices, heat‑shrink, grommets through openings and route away from pinch points.
If wiring and connectors check OK, suspect the switch. Disconnect harness and bench test or replace switch per service procedure.
If short remains after replacing switch and repairing wiring, suspect control module input fault. Confirm with manufacturer procedures before replacing module.
After repairs, clear DTCs and verify proper operation through multiple open/close cycles and road tests. Re-scan to ensure code does not return.

Likely causes

Worn/chafed insulation where wiring flexes at the B‑pillar
Connector pin pushed out or shorted to ground by corrosion
Switch failed internally and is shorting the signal to ground
Harness routed incorrectly after service and contacting metal
Moisture causing a conductive path at the connector

Fault status

⚠️ Status

B2365 — B‑pillar power sliding door open/close switch input circuit short to ground detected. Control module reports the switch input is pulled to ground when it should be at reference voltage or open.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.8-2.0 hours