Code
B1670
LAND ROVER
B — Body
Passenger side external mirror horizontal engine jam
Views:
UK: 13
EN: 33
RU: 14
AI status
Completed
Completed
100%
Causes
- Foreign object or ice blocking mirror movement
- Mechanical binding inside mirror gearbox or linkage
- Worn or seized motor bearings or brushes
- Broken or bent mirror linkage or gears
- Corroded/loose connector or wiring fault to the motor
- Faulty mirror control switch or body control module (BCM) output
Symptoms
- Passenger mirror will not move left/right when commanded
- Clicking, grinding, or no sound from the mirror when attempting horizontal movement
- Mirror may move slowly or stop mid-travel
- DTC B1670 stored in body/BCM scan tool
- Possibly erratic operation or erratic mirror position feedback if equipped with position sensor
What to check
- Visually inspect mirror for external obstruction (ice, debris) and physical damage
- Operate mirror while listening at the mirror for motor noise or grinding
- Check fuse(s) related to mirror circuit(s) and replace if blown
- Inspect mirror connector for corrosion, bent pins, water ingress or loose terminals
- Attempt manual movement of mirror glass (if serviceable) to check for binding
- Scan BCM or body module for stored mirror-related faults and freeze/frame data
Signal parameters
- Expected supply voltage at motor connector when commanded: approx. 11–14 V (battery voltage) on the driven pin and near 0 V on the return (polarity reverses for opposite direction)
- Motor coil resistance (typical): low ohms — often 1–20 Ω (verify specific spec in OEM data)
- Idle/uncommanded: no supply voltage (open or high impedance) at motor connector
- If mirror has position feedback potentiometer: nominal potentiometer value typically in the kΩ range and should vary smoothly across travel
- Motor current draw while turning: can be 0.5–5 A depending on motor and load; abnormally high current indicates mechanical jam
Diagnostic algorithm
- Record freeze frame and any related mirror DTCs with a scan tool.
- Visually inspect mirror, housing, and glass for external obstructions, ice, or impact damage; clear any obstruction and retest.
- Operate the mirror control while an assistant observes and listens at the mirror: note if motor operates, stalls, clicks, or is silent.
- Check fuses and relays for the mirror circuit; replace or repair as required.
- Disconnect mirror electrical connector and inspect pins for corrosion, damage, or water. Repair connector and harness as needed.
- With connector disconnected, measure motor coil resistance across the horizontal motor terminals and compare to OEM spec. Very high/infinite = open/sprung winding; near 0 = shorted.
- Reconnect and back-probe motor connector. Command horizontal movement and measure supply voltage/polarity at the motor pins: battery voltage should appear on one pin and ground on the other (reverses direction). No or low voltage indicates control/supply issue.
- If correct voltage is present but motor does not turn, suspect internal motor or gearbox seizure — remove mirror assembly for bench test or replacement.
- If no voltage at motor when commanded, trace wiring back to BCM/switch: test continuity to module and verify switch operation (measure voltage at switch/mirror switch connector while commanding).
- If wiring and switch are good, check BCM outputs and grounds. Replace or reprogram BCM only after confirming upstream wiring/switch and that BCM is issuing correct output.
- After repair, clear DTCs and perform full function test of mirror horizontal movement; verify no recurrence of B1670.
Likely causes
- Obstruction or physical damage to mirror glass/assembly preventing travel
- Worn/seized horizontal adjustment motor or gearbox
- Connector corrosion or intermittent wiring causing insufficient voltage/current
Fault status
Status
Passenger side external mirror horizontal motor jam detected — mirror horizontal movement blocked or motor stalled.
Repair difficulty: Medium
Diagnostic time: 0.5-1.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
B1670
Other
B — Body
Mirror Passenger Right/Left Motor Stalled
Views:
UK: 27
EN: 51
RU: 27
AI status
Completed
Completed
100%
Causes
- Foreign object or ice blocking mirror movement
- Mechanical binding inside mirror gearbox or linkage
- Worn or seized motor bearings or brushes
- Broken or bent mirror linkage or gears
- Corroded/loose connector or wiring fault to the motor
- Faulty mirror control switch or body control module (BCM) output
Symptoms
- Passenger mirror will not move left/right when commanded
- Clicking, grinding, or no sound from the mirror when attempting horizontal movement
- Mirror may move slowly or stop mid-travel
- DTC B1670 stored in body/BCM scan tool
- Possibly erratic operation or erratic mirror position feedback if equipped with position sensor
What to check
- Visually inspect mirror for external obstruction (ice, debris) and physical damage
- Operate mirror while listening at the mirror for motor noise or grinding
- Check fuse(s) related to mirror circuit(s) and replace if blown
- Inspect mirror connector for corrosion, bent pins, water ingress or loose terminals
- Attempt manual movement of mirror glass (if serviceable) to check for binding
- Scan BCM or body module for stored mirror-related faults and freeze/frame data
Signal parameters
- Expected supply voltage at motor connector when commanded: approx. 11–14 V (battery voltage) on the driven pin and near 0 V on the return (polarity reverses for opposite direction)
- Motor coil resistance (typical): low ohms — often 1–20 Ω (verify specific spec in OEM data)
- Idle/uncommanded: no supply voltage (open or high impedance) at motor connector
- If mirror has position feedback potentiometer: nominal potentiometer value typically in the kΩ range and should vary smoothly across travel
- Motor current draw while turning: can be 0.5–5 A depending on motor and load; abnormally high current indicates mechanical jam
Diagnostic algorithm
- Record freeze frame and any related mirror DTCs with a scan tool.
- Visually inspect mirror, housing, and glass for external obstructions, ice, or impact damage; clear any obstruction and retest.
- Operate the mirror control while an assistant observes and listens at the mirror: note if motor operates, stalls, clicks, or is silent.
- Check fuses and relays for the mirror circuit; replace or repair as required.
- Disconnect mirror electrical connector and inspect pins for corrosion, damage, or water. Repair connector and harness as needed.
- With connector disconnected, measure motor coil resistance across the horizontal motor terminals and compare to OEM spec. Very high/infinite = open/sprung winding; near 0 = shorted.
- Reconnect and back-probe motor connector. Command horizontal movement and measure supply voltage/polarity at the motor pins: battery voltage should appear on one pin and ground on the other (reverses direction). No or low voltage indicates control/supply issue.
- If correct voltage is present but motor does not turn, suspect internal motor or gearbox seizure — remove mirror assembly for bench test or replacement.
- If no voltage at motor when commanded, trace wiring back to BCM/switch: test continuity to module and verify switch operation (measure voltage at switch/mirror switch connector while commanding).
- If wiring and switch are good, check BCM outputs and grounds. Replace or reprogram BCM only after confirming upstream wiring/switch and that BCM is issuing correct output.
- After repair, clear DTCs and perform full function test of mirror horizontal movement; verify no recurrence of B1670.
Likely causes
- Obstruction or physical damage to mirror glass/assembly preventing travel
- Worn/seized horizontal adjustment motor or gearbox
- Connector corrosion or intermittent wiring causing insufficient voltage/current
Fault status
Status
Passenger side external mirror horizontal motor jam detected — mirror horizontal movement blocked or motor stalled.
Repair difficulty: Medium
Diagnostic time: 0.5-1.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email