DROID_CONTROL_LOOP_DOOR_TIMED_OUT
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Applicable alarms (1)
DROID_CONTROL_LOOP_DOOR_TIMED_OUT
Likely outcomes — click to expand
Based on 0 missions where this alarm fired in the last 90 days as of 2026-10-13
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”The droid’s door servo is not responding on the network. This could be a problem with the servo, the harness, the connector, or the AMN. This guide checks the Door Servo M5 Connector and servo motor assembly first, then routes unresolved failures to Powertrain ME for harness or AMN evaluation.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
assign-wo-template-1537["<small><b>Step 1</b></small><br/>Action: Assign WO Template 1537 Inspect Droi..."]
remove-droid-body-foam["<small><b>Step 2</b></small><br/>Action: Remove Droid Body Foam per CMM 10.1...."]
tighten-door-servo-m5-connector["<small><b>Step 3</b></small><br/>Action: Attempt to tighten the Door Servo M5 ..."]
tighten-m5-and-test-servo-torque["<small><b>Step 4</b></small><br/>Action: Manually tighten the M5 servo connect..."]
replace-servo-motor-assembly["<small><b>Step 5</b></small><br/>Action: Remove and replace servo motor assemb..."]
test-servo-torque-after-replacement["<small><b>Step 6</b></small><br/>Action: Perform a Droid Servo Torque Test per..."]
escalate-post-replacement-failure{{"<small><b>Step 7</b></small><br/>Escalation: Keep WO 1537 open. Escalate to Powert..."}}
remove-servo-return-to-spares-and-retire-droid["<small><b>Step 8</b></small><br/>Action: Remove the Servo Motor Assy per CMM ..."]
follow-powertrain-me-disposition["<small><b>Step 9</b></small><br/>Action: Follow the disposition from Powertrai..."]
reinstall-foam-and-perform-droid-health-check["<small><b>Step 10</b></small><br/>Action: Re-install Droid Body Foam per CMM 1..."]
return-droid-to-service["<small><b>Step 11</b></small><br/>Action: Return the Droid to service. Use 'Ret..."]
follow-relevant-droid-health-check-guides["<small><b>Step 12</b></small><br/>Action: Follow the Relevant Guides for the fa..."]
assign-wo-template-1537 --> remove-droid-body-foam
remove-droid-body-foam --> tighten-door-servo-m5-connector
tighten-door-servo-m5-connector -->|M5 Connector was Loose| tighten-m5-and-test-servo-torque
tighten-door-servo-m5-connector -->|M5 Connector was tight| replace-servo-motor-assembly
tighten-m5-and-test-servo-torque -->|Yes| reinstall-foam-and-perform-droid-health-check
tighten-m5-and-test-servo-torque -->|No| replace-servo-motor-assembly
replace-servo-motor-assembly --> test-servo-torque-after-replacement
test-servo-torque-after-replacement -->|Yes| reinstall-foam-and-perform-droid-health-check
test-servo-torque-after-replacement -->|No| escalate-post-replacement-failure
escalate-post-replacement-failure -->|Powertrain ME directs Droid...| remove-servo-return-to-spares-and-retire-droid
escalate-post-replacement-failure -->|Powertrain ME directs anoth...| follow-powertrain-me-disposition
reinstall-foam-and-perform-droid-health-check -->|Yes| return-droid-to-service
reinstall-foam-and-perform-droid-health-check -->|No| follow-relevant-droid-health-check-guides
style assign-wo-template-1537 fill:#dcfce7,stroke:#22c55e,color:#14532d
style remove-droid-body-foam fill:#dcfce7,stroke:#22c55e,color:#14532d
style tighten-door-servo-m5-connector fill:#dcfce7,stroke:#22c55e,color:#14532d
style tighten-m5-and-test-servo-torque fill:#dcfce7,stroke:#22c55e,color:#14532d
style replace-servo-motor-assembly fill:#dcfce7,stroke:#22c55e,color:#14532d
style test-servo-torque-after-replacement fill:#dcfce7,stroke:#22c55e,color:#14532d
style escalate-post-replacement-failure fill:#fef3c7,stroke:#f59e0b,color:#78350f
style remove-servo-return-to-spares-and-retire-droid fill:#dcfce7,stroke:#22c55e,color:#14532d
style follow-powertrain-me-disposition fill:#dcfce7,stroke:#22c55e,color:#14532d
style reinstall-foam-and-perform-droid-health-check fill:#dcfce7,stroke:#22c55e,color:#14532d
style return-droid-to-service fill:#dcfce7,stroke:#22c55e,color:#14532d
style follow-relevant-droid-health-check-guides fill:#dcfce7,stroke:#22c55e,color:#14532d Hover or focus a block to preview it. Select the block to keep the preview open.
1 action
Assign WO Template 1537 Inspect Droid after Loop Door Time Out to the droid.
2 action
Remove Droid Body Foam per CMM 10.1.3.d Remove Droid Body Foam.
3 action
Attempt to tighten the Door Servo M5 Connector.
4 action
Manually tighten the M5 servo connector to hand tight. Then perform a Droid Servo Torque Test per CMM 4.1.2.b Servo Torque Test. Did the servo pass the test?
5 action
Remove and replace servo motor assembly per CMM 10.1.3.j Remove Servo Motor Assembly and 10.1.3.k Install Servo Motor Assembly.
6 action
Perform a Droid Servo Torque Test per CMM 4.1.2.b Servo Torque Test. Did the servo pass the test?
7 escalation
Keep WO 1537 open. Escalate to Powertrain ME via incident.io to evaluate a possible harness or AMN fault and determine the Droid disposition.
8 action
Remove the Servo Motor Assy per CMM 10.1.3.j Remove Servo Motor Assembly and return the unit to Spares.
Resolve the current WO 1537 with the failed post-replacement torque test and retirement disposition recorded in the resolution note.
Assign WO Template 841 Droid Retirement from Fleet to the droid.
Resolve the current WO 1537 with the failed post-replacement torque test and retirement disposition recorded in the resolution note.
Assign WO Template 841 Droid Retirement from Fleet to the droid.
9 action
Follow the disposition from Powertrain ME. Record the direction and completed work in WO 1537, and resolve WO 1537 only after the directed work is complete.
10 action
Re-install Droid Body Foam per CMM 10.1.3.e Install Droid Body Foam. Resolve the current work order.
Assign WO Template 476 Perform a Droid Health Check on Droid and perform the health check. Did the droid pass the health check?
Assign WO Template 476 Perform a Droid Health Check on Droid and perform the health check. Did the droid pass the health check?
11 action
Return the Droid to service. Use "Return the Droid to Service" as the resolution note.
12 action
Follow the Relevant Guides for the failure mode in the Droid Health Check. Keep the Droid out of service until the applicable guide is complete and the failed health-check condition is resolved.
Resolution note
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