LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 2010 >> Milan Base, Automatic >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Supplemental Restraint System DTCS >> Restraints Control Module (RCM)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Restraints Control Module (RCM)

RESTRAINTS CONTROL MODULE (RCM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action To Take
Continuous lamp The Air Bag Indicator is Illuminated Continuously Go To PINPOINT TEST A .
B0001:11 Driver Frontal Stage 1 Deployment Control: Circuit Short to Ground Go To PINPOINT TEST B .
B0001:12 Driver Frontal Stage 1 Deployment Control: Circuit Short to Battery Go To PINPOINT TEST B .
B0001:13 Driver Frontal Stage 1 Deployment Control: Circuit Open Go To PINPOINT TEST B .
B0001:1A Driver Frontal Stage 1 Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST B .
B0001:2B Driver Frontal Stage 1 Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0001:4A Driver Frontal Stage 1 Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0002:11 Driver Frontal Stage 2 Deployment Control: Circuit Short to Ground Go To PINPOINT TEST C .
B0002:12 Driver Frontal Stage 2 Deployment Control: Circuit Short to Battery Go To PINPOINT TEST C .
B0002:13 Driver Frontal Stage 2 Deployment Control: Circuit Open Go To PINPOINT TEST C .
B0002:1A Driver Frontal Stage 2 Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST C .
B0002:2B Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0002:4A Driver Frontal Stage 2 Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0004:11 Driver Knee Bolster Deployment Control: Circuit Short to Ground Go To PINPOINT TEST D .
B0004:12 Driver Knee Bolster Deployment Control: Circuit Short to Battery Go To PINPOINT TEST D .
B0004:13 Driver Knee Bolster Deployment Control: Circuit Open Go To PINPOINT TEST D .
B0004:1A Driver Knee Bolster Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST D .
B0004:2B Driver Knee Bolster Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0004:4A Driver Knee Bolster Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0010:11 Passenger Frontal Stage 1 Deployment Control: Circuit Short to Ground Go To PINPOINT TEST E .
B0010:12 Passenger Frontal Stage 1 Deployment Control: Circuit Short to Battery Go To PINPOINT TEST E .
B0010:13 Passenger Frontal Stage 1 Deployment Control: Circuit Open Go To PINPOINT TEST E .
B0010:1A Passenger Frontal Stage 1 Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST E .
B0010:2B Passenger Frontal Stage 1 Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0010:4A Passenger Frontal Stage 1 Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0011:11 Passenger Frontal Stage 2 Deployment Control: Circuit Short to Ground Go To PINPOINT TEST F .
B0011:12 Passenger Frontal Stage 2 Deployment Control: Circuit Short to Battery Go To PINPOINT TEST F .
B0011:13 Passenger Frontal Stage 2 Deployment Control: Circuit Open Go To PINPOINT TEST F .
B0011:1A Passenger Frontal Stage 2 Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST F .
B0011:2B Passenger Frontal Stage 2 Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0011:4A Passenger Frontal Stage 2 Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0020:11 Left Side Airbag Deployment Control: Circuit Short to Ground Go To PINPOINT TEST G .
B0020:12 Left Side Airbag Deployment Control: Circuit Short to Battery Go To PINPOINT TEST G .
B0020:13 Left Side Airbag Deployment Control: Circuit Open Go To PINPOINT TEST G .
B0020:1A Left Side Airbag Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST G .
B0020:2B Left Side Airbag Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0020:4A Left Side Airbag Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0021:11 Left Curtain Deployment Control 1: Circuit Short to Ground Go To PINPOINT TEST H .
B0021:12 Left Curtain Deployment Control 1: Circuit Short to Battery Go To PINPOINT TEST H .
B0021:13 Left Curtain Deployment Control 1: Circuit Open Go To PINPOINT TEST H .
B0021:1A Left Curtain Deployment Control 1: Circuit Resistance Below Threshold Go To PINPOINT TEST H .
B0021:2B Left Curtain Deployment Control 1: Signal Cross Coupled Go To PINPOINT TEST AC .
B0021:4A Left Curtain Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0028:11 Right Side Airbag Deployment Control: Circuit Short to Ground Go To PINPOINT TEST I .
B0028:12 Right Side Airbag Deployment Control: Circuit Short to Battery Go To PINPOINT TEST I .
B0028:13 Right Side Airbag Deployment Control: Circuit Open Go To PINPOINT TEST I .
B0028:1A Right Side Airbag Deployment Control 1: Circuit Resistance Below Threshold Go To PINPOINT TEST I .
B0028:2B Right Side Airbag Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B0028:4A Right Side Airbag Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B0029:11 Right Curtain Deployment Control 1: Circuit Short to Ground Go To PINPOINT TEST J .
B0029:12 Right Curtain Deployment Control 1: Circuit Short to Battery Go To PINPOINT TEST J .
B0029:13 Right Curtain Deployment Control 1: Circuit Open Go To PINPOINT TEST J .
B0029:1A Right Curtain Deployment Control 1: Circuit Resistance Below Threshold Go To PINPOINT TEST J .
B0029:2B Right Curtain Deployment Control 1: Signal Cross Coupled Go To PINPOINT TEST AC .
B0029:4A Right Curtain Deployment Control 1: Incorrect Component Installed Go To PINPOINT TEST AD .
B0050:11 Driver Seatbelt Sensor: Circuit Short to Ground Go To PINPOINT TEST K .
B0050:12 Driver Seatbelt Sensor: Circuit Short to Battery Go To PINPOINT TEST K .
B0050:13 Driver Seatbelt Sensor: Circuit Open Go To PINPOINT TEST K .
B0050:1D Driver Seatbelt Sensor: Circuit Current Out of Range Go To PINPOINT TEST K .
B0050:2B Driver Seatbelt Sensor: Signal Cross Coupled Go To PINPOINT TEST AC .
B0050:4A Driver Seatbelt Sensor: Incorrect Component Installed Go To PINPOINT TEST AD .
B0052:11 Passenger Seatbelt Sensor: Circuit Short to Ground Go To PINPOINT TEST L .
B0052:12 Passenger Seatbelt Sensor: Circuit Short to Battery Go To PINPOINT TEST L .
B0052:13 Passenger Seatbelt Sensor: Circuit Open Go To PINPOINT TEST L .
B0052:1D Passenger Seatbelt Sensor: Circuit Current Out of Range Go To PINPOINT TEST L .
B0052:2B Passenger Seatbelt Sensor: Signal Cross Coupled Go To PINPOINT TEST AC .
B0052:4A Passenger Seatbelt Sensor: Incorrect Component Installed Go To PINPOINT TEST AD .
B0090:11 Left Frontal Restraints Sensor: Circuit Short to Ground Go To PINPOINT TEST M .
B0090:4A Left Frontal Restraints Sensor: Incorrect Component Installed Go To PINPOINT TEST AD .
B0090:81 Left Frontal Restraints Sensor: Invalid Serial Data Received INSTALL a new LH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR .
B0090:93 Left Frontal Restraints Sensor: No Operation Go To PINPOINT TEST M .
B0090:96 Left Frontal Restraints Sensor: Component Internal Failure INSTALL a new LH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR .
B0091:11 Left Side Restraints Sensor 1: Circuit Short to Ground Go To PINPOINT TEST N .
B0091:4A Left Side Restraints Sensor 1: Incorrect Component Installed Go To PINPOINT TEST AD .
B0091:81 Left Side Restraints Sensor 1: Invalid Serial Data Received INSTALL a new driver B-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - B-PILLAR .
B0091:93 Left Side Restraints Sensor 1: No Operation Go To PINPOINT TEST N .
B0091:96 Left Side Restraints Sensor 1: Component Internal Failure INSTALL a new driver B-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - B-PILLAR .
B0092:11 Left Side Restraints Sensor 2: Circuit Short to Ground Go To PINPOINT TEST O .
B0092:4A Left Side Restraints Sensor 2: Incorrect Component Installed Go To PINPOINT TEST AD .
B0092:81 Left Side Restraints Sensor 2: Invalid Serial Data Received INSTALL a new driver C-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - C-PILLAR .
B0092:93 Left Side Restraints Sensor 2: No Operation Go To PINPOINT TEST O .
B0092:96 Left Side Restraints Sensor 2: Component Internal Failure INSTALL a new driver C-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - C-PILLAR .
B0095:11 Right Frontal Restraints Sensor: Circuit Short to Ground Go To PINPOINT TEST P .
B0095:4A Right Frontal Restraints Sensor: Incorrect Component Installed Go To PINPOINT TEST AD .
B0095:81 Right Frontal Restraints Sensor: Invalid Serial Data Received INSTALL a new RH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR .
B0095:93 Right Frontal Restraints Sensor: No Operation Go To PINPOINT TEST P .
B0095:96 Right Frontal Restraints Sensor: Component Internal Failure INSTALL a new RH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR .
B0096:11 Right Side Restraints Sensor 1: Circuit Short to Ground Go To PINPOINT TEST O .
B0096:4A Right Side Restraints Sensor 1: Incorrect Component Installed Go To PINPOINT TEST AD .
B0096:81 Right Side Restraints Sensor 1: Invalid Serial Data Received INSTALL a new passenger B-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - B-PILLAR .
B0096:93 Right Side Restraints Sensor 1: No Operation Go To PINPOINT TEST O .
B0096:96 Right Side Restraints Sensor 1: Component Internal Failure INSTALL a new passenger B-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - B-PILLAR .
B0097:11 Right Side Restraints Sensor 2: Circuit Short to Ground Go To PINPOINT TEST N .
B0097:4A Right Side Restraints Sensor 2: Incorrect Component Installed Go To PINPOINT TEST AD .
B0097:81 Right Side Restraints Sensor 2: Invalid Serial Data Received INSTALL a new passenger C-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - C-PILLAR .
B0097:93 Right Side Restraints Sensor 2: No Operation Go To PINPOINT TEST N .
B0097:96 Right Side Restraints Sensor 2: Component Internal Failure INSTALL a new passenger C-pillar side impact sensor. REFER to SIDE IMPACT SENSOR - C-PILLAR .
B00A0:09 Occupant Classification System: Component Failure Go To PINPOINT TEST S .
B00A0:4A Occupant Classification System: Incorrect Component Installed Go To PINPOINT TEST S .
B00A0:63 Occupant Classification System: Circuit/Component Protection Time-Out Go To PINPOINT TEST S .
B00A0:64 Occupant Classification System: Signal Plausibility Failure Go To PINPOINT TEST S .
B00A0:68 Occupant Classification System: Event Information Go To PINPOINT TEST S .
B00B5:11 Driver Seat Track Position Restraints Sensor: Circuit Short to Ground Go To PINPOINT TEST Y .
B00B5:12 Driver Seat Track Position Restraints Sensor: Circuit Short to Battery Go To PINPOINT TEST Y .
B00B5:13 Driver Seat Track Position Restraints Sensor: Circuit Open Go To PINPOINT TEST Y .
B00B5:1D Driver Seat Track Position Restraints Sensor: Circuit Current Out of Range Go To PINPOINT TEST Y .
B00B5:2B Driver Seat Track Position Restraints Sensor: Signal Cross Coupled Go To PINPOINT TEST AC .
B00B5:4A Driver Seat Track Position Restraints Sensor: Incorrect Component Installed Go To PINPOINT TEST AD .
B00D5:11 Restraint System Passenger Disable Indicator: Circuit Short to Ground Go To PINPOINT TEST Z .
B00D5:12 Restraint System Passenger Disable Indicator: Circuit Short to Battery Go To PINPOINT TEST Z .
B00D5:13 Restraint System Passenger Disable Indicator: Circuit Open Go To PINPOINT TEST Z .
B00D5:4A Restraint System Passenger Disable Indicator: Incorrect Component Installed Go To PINPOINT TEST AD .
B1193:00 Crash Event Storage Full and Locked: No Sub Type Information This DTC indicates the vehicle has been involved in a collision. INSTALL a new RCM  and impact sensors. REFER to INSPECTION AND REPAIR AFTER A SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPLOYMENT .
B1211:11 Driver Seatbelt Retractor Pretensioner Deployment Control: Circuit Short to Ground Go To PINPOINT TEST AA .
B1211:12 Driver Seatbelt Retractor Pretensioner Deployment Control: Circuit Short to Battery Go To PINPOINT TEST AA .
B1211:13 Driver Seatbelt Retractor Pretensioner Deployment Control: Circuit Open Go To PINPOINT TEST AA .
B1211:1A Driver Seatbelt Retractor Pretensioner Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST AA .
B1211:2B Driver Seatbelt Retractor Pretensioner Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B1211:4A Driver Seatbelt Retractor Pretensioner Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
B1214:11 Passenger Seatbelt Retractor Pretensioner Deployment Control: Circuit Short to Ground Go To PINPOINT TEST AB .
B1214:12 Passenger Seatbelt Retractor Pretensioner Deployment Control: Circuit Short to Battery Go To PINPOINT TEST AB .
B1214:13 Passenger Seatbelt Retractor Pretensioner Deployment Control: Circuit Open Go To PINPOINT TEST AB .
B1214:1A Passenger Seatbelt Retractor Pretensioner Deployment Control: Circuit Resistance Below Threshold Go To PINPOINT TEST AB .
B1214:2B Passenger Seatbelt Retractor Pretensioner Deployment Control: Signal Cross Coupled Go To PINPOINT TEST AC .
B1214:4A Passenger Seatbelt Retractor Pretensioner Deployment Control: Incorrect Component Installed Go To PINPOINT TEST AD .
U0028:08 Vehicle Communication Bus A: Bus Signal/Message Failure Go To PINPOINT TEST AG .
U0028:88 Vehicle Communication Bus A: Bus Off Go To PINPOINT TEST AG .
U0154:00 Lost Communication With Restraints Occupant Classification System Module: No Sub Type Information
NOTE: The DTC will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new RCM  as part of repair.
REFER to MODULE COMMUNICATIONS NETWORK to diagnose the no communication with the Occupant Classification System Module (OCSM).
U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information
NOTE: The DTC will set in a module that is reporting a communication fault from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new RCM  as part of repair.
REFER to MODULE COMMUNICATIONS NETWORK to diagnose the no communication with the Instrument Cluster (IC) module.
U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information
NOTE: This DTC will set in the RCM  if a message is not received from the Accessory Protocol Interface Module (APIM).
Check for additional RCM  and APIM  DTCs.REFER to the appropriate Diagnostic information to diagnose DTCs concern. If no other DTCs are present, REFER to APIM  Software Level Check in the General Procedures portion of INFORMATION AND ENTERTAINMENT SYSTEMS .
U0300:00 Internal Control Module Software Incompatibility: No Sub Type Information CARRY OUT Programmable Module Installation (PMI). RETRIEVE RCM  DTCs.
If RCM  DTC U0300:00 is retrieved on-demand during self-test, INSTALL a new RCM  . REFER to RESTRAINTS CONTROL MODULE (RCM) .
U0554:00 Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information CHECK for additional RCM  and APIM  DTCs.
REFER to the appropriate Diagnostic information to diagnose the DTCs. If no other DTCs are present, REFER to ACCESSORY PROTOCOL INTERFACE MODULE (APIM) SOFTWARE LEVEL CHECK .
U2100:00 Initial Configuration Not Complete: No Sub Type Information CARRY OUT PMI  . RETRIEVE RCM  DTCs. If RCM  DTC U2100:00 is retrieved on-demand, INSTALL a new RCM  . REFER to RESTRAINTS CONTROL MODULE (RCM) .
U2200:00 Control Module Configuration Memory Corrupt: No Sub Type Information INSTALL a new RCM  and CARRY OUT Programmable Module Installation (PMI). Use as-built data when CARRYING out PMI  for this DTC. REFER to RESTRAINTS CONTROL MODULE (RCM) .
U3000:46 Control Module: Calibration/Parameter Memory Failure INSTALL a new RCM  . REFER to RESTRAINTS CONTROL MODULE (RCM) .
U3000:49 Control Module: Internal Electronic Failure INSTALL a new RCM  and CARRY OUT Programmable Module Installation (PMI). If DTC U2200:00 is also present, use as-built data when CARRYING out PMI  . REFER to RESTRAINTS CONTROL MODULE (RCM) .
U3000:4A Control Module: Incorrect Component Installed Go To PINPOINT TEST AD .
U3003:16 Battery Voltage: Circuit Voltage Below Threshold Go To PINPOINT TEST AI .
U3003:17 Battery Voltage: Circuit Voltage Above Threshold Go To PINPOINT TEST AI .