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Home >> Lincoln >> 2010 >> MKZ AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1260 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Restraints Control Module (RCM) >> Pinpoint Test Z: DTCs B0001:2B, B0002:2B, B0010:2B, B0011:2B, B0020:2B, B0021:2B, B0028:2B, B0029:2B, B0050:2B, B0052:2B, B00B5:2B, B1211:2B, B1212:2B, B1213:2B and B1214:2B >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The Restraints Control Module (RCM) monitors all deployable device and sensor circuits for a signal cross coupled (short) between circuits. If the RCM  detects a short between the circuits of one device and another device, it will store a DTC for each of the signal cross coupled faults in memory. The RCM  sends a message to the Instrument Cluster (IC) module to illuminate the air bag warning indicator. When a normal loop fault is present (one loop is either shorted to battery/ground, open circuit or low resistance), then signal cross coupled diagnostics will not be active. Once the normal loop fault is repaired, then the signal cross coupled diagnostics will resume.

DTC DESCRIPTION CHART

DTC Description Fault Trigger Condition
  • B0001:2B - Driver Frontal Stage 1 Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver air bag stage 1 circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0002:2B - Driver Frontal Stage 2 Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver air bag stage 2 circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0010:2B - Passenger Frontal Stage 1 Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger air bag stage 1 circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0011:2B - Passenger Frontal Stage 2 Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger air bag stage 2 circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0020:2B - Left Side Airbag Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver seat side air bag circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0021:2B - Left Curtain Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver Safety Canopy® circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0028:2B - Right Side Airbag Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger seat side air bag circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0029:2B - Right Curtain Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger Safety Canopy® circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0050:2B - Driver Seatbelt Sensor: Signal Cross Coupled
 If the RCM  detects a short between the driver safety belt buckle switch circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B0052:2B - Passenger Seatbelt Sensor: Signal Cross Coupled
 If the RCM  detects a short between the passenger safety belt buckle switch circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B00B5:2B - Driver Seat Track Position Restraints Sensor:Signal Cross Coupled
 If the RCM  detects a short between the driver seat track position sensor circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B1211:2B - Driver Seatbelt Retractor Pretensioner Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver safety belt buckle pretensioner circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B1212:2B - Driver Seatbelt Buckle Pretensioner Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the driver safety belt buckle pretensioner circuits and circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B1213:2B - Passenger Seatbelt Buckle Pretensioner Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger safety belt buckle pretensioner circuits and circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.
  • B1214:2B - Passenger Seatbelt Retractor Pretensioner Deployment Control: Signal Cross Coupled
 If the RCM  detects a short between the passenger safety belt buckle pretensioner circuits and the circuits of another SRS  component, it will set this DTC and the DTC of the corresponding SRS  component.

This pinpoint test is intended to diagnose the following: 

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