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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1417 (Supplemental Inflatable Restraint System) >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test AA: DTC B2987 - Deployable Steering Column Circuit Resistance Low on Squib >> Pinpoint Test Aa: DTC B2987 - Deployable Steering Column Circuit Resistance Low On Squib

Pinpoint Test Aa: DTC B2987 - Deployable Steering Column Circuit Resistance Low On Squib

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough Inspection and Verification before proceeding with the Pinpoint Test.
  1. AA1 CHECK FOR ON-DEMAND AND CONTINUOUS DTCs 
    WARNING: Restraint system diagnostic tools are for service only. Tools must be removed prior to operating the vehicle over the road. Failure to remove restraint system diagnostic tools could result in injury and possible violation of vehicle safety standards.
    WARNING: Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
    WARNING: The safety belt pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a safety belt buckle pretensioner or safety belt retractor pretensioner. Never probe a pretensioner electrical connector. Doing so could result in pretensioner or air bag deployment and could result in personal injury.
    NOTE: After diagnosing or repairing an SRS, the restraint system diagnostic tools must be removed before operating the vehicle over the road  .
    NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Retrieve/Record Continuous DTCs.
    • Was DTC B2987 retrieved during the on-demand self test? 

    Yes  : This is a hard fault. The fault condition is still present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to AA2.

    No  : This is an intermittent fault. The fault condition is not present at this time. GO to  AA5.

  2. AA2 CHECK THE DEPLOYABLE STEERING COLUMN 

    Yes  : GO to AA3.

    No  : INSTALL a new steering column. REFER to STEERING COLUMN .

  3. AA3 CHECK FOR LOW RESISTANCE ON CIRCUITS 2136 (OG) AND 2137 (RD/LB) BETWEEN THE DEPLOYABLE STEERING COLUMN AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Restraint System Diagnostic Tool to the Deployable Steering Column C2318.
    • Measure the resistance between deployable steering column C2318-A, circuit 2136 (OG), harness side and C2318-B, circuit 2137 (RD/LB), harness side.
      Fig 1: Measuring Resistance Between Deployable Steering Column C2318-A, Circuit 2136 And C2318-B, Circuit 2137
      G04586448Courtesy of FORD MOTOR CO.
    • Is the resistance less than 800 ohms? 

    Yes  : GO to AA4.

    No  : INSTALL a new RCM . REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to  AA6.

  4. AA4 CHECK FOR LOW RESISTANCE BETWEEN RCM CIRCUITS 2136 (OG) AND 2137 (RD/LB) 
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between C310a pin 21, component side and pin 22, component side.
      Fig 2: Measuring Resistance Between C310A Pin 21 And Pin 22
      G04586449Courtesy of FORD MOTOR CO.
    • Is the resistance less than 800 ohms? 

    Yes  : INSTALL a new RCM . REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to  AA6.

    No  : REPAIR circuit 2136 (OG) and circuit 2137 (RD/LB). GO to  AA6.

  5. AA5 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Was DTC B2987 retrieved during the on-demand self test? 

    Yes  : This is a hard fault. The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to  AA3.

    No  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. GO to AA6.

  6. AA6 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous DTCs recorded during Step  AA1.
    • Were any continuous DTCs retrieved during Step   AA1 ? 

    Yes  : Do not clear any DTCs until all DTCs have been resolved. GO to the RESTRAINTS CONTROL MODULE (RCM) DIAGNOSTIC TROUBLE CODE (DTC) PRIORITY TABLE  in this article for pinpoint test direction.

    No  : RECONNECT the system. If previously directed to deactivate the system, REACTIVATE the system. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION . REPOWER the system. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING . PROVE OUT the system. CLEAR all DTCs.

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