B1635

Code

Other B — Body

Mirror Driver Right Circuit Failure

Brand: Other

Type: B — Body

Views: UK: 33 EN: 32 RU: 28

AI status

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Page language: EN

Causes

Blown fuse for mirror circuit
Open or shorted wiring (power, ground, or signal) to right mirror
Corroded/damaged mirror connector or pins (water intrusion)
Faulty right mirror motor/actuator or position sensor
Defective mirror control switch or switch harness
Faulty body control module (BCM) or mirror control module

Symptoms

Right mirror does not adjust or responds intermittently
Mirror movement is slow, weak, or only moves in one direction
Clicking or no audible motor noise when commanding mirror
Mirror heater (if integrated) may not work on right side
Diagnostic trouble code present and may recur after clearing

What to check

Read and record DTCs and freeze frame with a scan tool; note any related codes
Visual inspection of right mirror housing, connector, and wiring harness for damage or corrosion
Check relevant fuse(s) and fusible links for continuity
Verify good ground at mirror and ground continuity to chassis
Back-probe mirror connector while commanding mirror to check for supply voltage and ground
Swap or command left mirror (if symmetric) to compare operation and isolate harness/module

Signal parameters

Mirror supply voltage: typical battery range 11–14 V at rest and while commanding
Ground continuity: near 0 Ω to chassis (typical
Motor coil resistance: typically a few ohms (1–10 Ω) depending on design — high or infinite indicates open
Position sensor or potentiometer output (if used): variable 0.5–4.5 V relative to mirror position
Command signal type: direct power/ground, PWM, or serial (CAN/LIN) depending on vehicle — PWM frequencies vary by manufacturer
Current draw when commanding: measurable increase; stalled motor may show abnormally high current

Diagnostic algorithm

Connect scan tool, read and record DTCs and freeze frame data; clear codes and see if B1635 immediately returns.
Perform visual inspection of the right mirror, its connector, and harness for corrosion, pin damage, or water intrusion. Repair as needed.
Check fuse(s) for mirror circuit; replace if blown and observe whether fuse blows again when mirror is commanded (indicates short).
With ignition ON, back-probe the mirror connector. Command mirror movement and verify battery voltage present at the supply pin and a switching path to ground or PWM signal on the control pin.
Measure resistance of the mirror motor/actuator (with connector disconnected). Compare to expected low-ohm value; open or very high resistance suggests failed motor.
Wiggle test wiring while commanding mirror to reproduce intermittent faults; inspect harness where it flexes (door hinge).
If left mirror is identical and accessible, swap mirror assemblies or swap connector harness to determine whether fault follows mirror or stays with vehicle circuit.
If power and ground are present and mirror motor tests good but code remains, check BCM/mirror-module outputs and related CAN/LIN communication with a scope or capable scan tool.
Repair or replace damaged wiring, connector, or mirror assembly as indicated. Reassemble, clear codes, and verify proper operation and that the code does not return.
If all wiring and mirror assembly check good and code persists, consult manufacturer service information for module-level tests or replace BCM/mirror control module as directed.

Likely causes

Open or corroded connector/wiring at right mirror
Failed mirror motor/actuator
Blown fuse or poor ground
Intermittent connection due to water ingress or damaged harness

Fault status

⚠️ Status

B1635 - Mirror Driver Right Circuit Failure: Body control module detected a fault in the right exterior mirror driver circuit (power/ground/signal fault or communication error).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours