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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1114 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test D: DTC B1884 - PAD Warning Lamp Circuit Failure >> Pinpoint Test D: DTC B1884 - Pad Warning Lamp Circuit Failure

Pinpoint Test D: DTC B1884 - Pad Warning Lamp Circuit Failure

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the safety canopy and cause serious personal injury or death.
WARNING: Never probe the electrical connectors on air bag, safety canopy or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
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. D1 CHECK FOR CONTINUOUS OR ON-DEMAND DTCs 
    • Enter the following diagnostic mode on the diagnostic tool: RCM Self Test/Retrieve and Record On-Demand and Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: RCM DataLogger/View and Record DTC B1884 Fault PIDs
    • Was on-demand DTC B1884 retrieved? 
    1. YES  : If the PAD indicator does  illuminate, go to  D2.
    2. If the PAD indicator does not  illuminate, go to  D4.
    3. NO  : This is an intermittent fault when present as a continuous memory DTC only (DTC not retrieved on demand). The fault condition is not present at this time. Go to  D8.
  2. D2 CHECK CIRCUIT CR116 (GN/WH) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: PAD Indicator C2355
      • Fig 1: Measuring Resistance Between PAD Indicator C2355-2, Circuit CR116 (GN/WH) & Ground
      GF0031165Courtesy of FORD MOTOR CO.
    • Measure the resistance between PAD indicator C2355-2, circuit CR116 (GN/WH), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  D7.
    2. NO  : Go to  D3.
  3. D3 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C310a and C310b
      • Fig 2: Measuring Resistance Between RCM C310A Pin 19, Component Side & Ground
      GF0008793Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310a pin 19, component side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit CR116 (GN/WH). Go to  D9.
    2. NO  : Go to  D7.
  4. D4 CHECK CIRCUIT CR116 (GN/WH) FOR AN OPEN 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: RCM C310a and C310b
    • Disconnect: PAD Indicator C2355
      • Fig 3: Measuring Resistance Between PAD Indicator C2355-2, Circuit CR116 (GN/WH) & RCM C310A-19
      GF0031166Courtesy of FORD MOTOR CO.
    • Measure the resistance between PAD indicator C2355-2, circuit CR116 (GN/WH), harness side and RCM C310a-19, circuit CR116 (GN/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  D5.
    2. NO  : REPAIR circuit CR116 (GN/WH). Go to  D9.
  5. D5 CHECK CIRCUIT CBP46 (WH/BU) FOR AN OPEN 
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
      • Fig 4: Measuring Voltage Between PAD Indicator C2355-3, Circuit CBP46 (WH/BU) & Ground
      GF0031167Courtesy of FORD MOTOR CO.
    • Measure the voltage between PAD indicator C2355-3, circuit CBP46 (WH/BU), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D6.
    2. NO  : REPAIR circuit CBP46 (WH/BU). Go to  D9.
  6. D6 CHECK THE PAD INDICATOR LAMP 
    • Key in OFF position.
    • Deactivate the SRS. Refer to Supplemental Restraint System (SRS) Deactivation and Reactivation .
    • Connect: PAD Indicator C2355
    • Key in ON position.
      • Fig 5: Connecting Fused Jumper Wire Between RCM C310A-19, Circuit CR116 (GN/WH) & Ground
      GF0008796Courtesy of FORD MOTOR CO.
    • Connect a fused jumper wire between RCM C310a-19, circuit CR116 (GN/WH), harness side and ground.
    • Does the PAD indicator illuminate? 
    1. YES  : Go to  D7.
    2. NO  : INSTALL a new PAD indicator. Go to  D9.
  7. D7 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system sensor electrical connectors and the RCM electrical connector are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded.
    1. YES  : INSTALL a new RCM. REFER to Restraints Control Module (RCM) . Go to  D9.
    2. NO  : In the process of diagnosing the fault, the fault condition has become intermittent. CHECK for causes of the intermittent fault in the areas previously worked in, particularly the pins and terminals of any electrical connector that were disconnected. Go to  D8.
  8. D8 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Enter the following diagnostic mode on the diagnostic tool: RCM Self Test/Retrieve and Record On-Demand and Continuous Memory DTCs
    • Was on-demand DTC B1884 retrieved? 
    1. 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  D2.
    2. NO  : CHECK for causes of intermittent open or short to ground on circuit CR116 (GN/WH). 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  D9.
  9. D9 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous memory DTCs recorded during Step D1.
    • Were any continuous memory DTCs retrieved during Step D1? 
    1. YES  : Do not clear any DTCs until all DTCs have been resolved. Go to the Supplemental Restraint System (SRS) Diagnostic Trouble Code (DTC) Chart  for pinpoint test direction.
    2. NO  : RECONNECT the SRS. If previously directed to deactivate the SRS, REACTIVATE the SRS. REFER to Supplemental Restraint System (SRS) Deactivation and Reactivation . REPOWER the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering . PROVE OUT the SRS. CLEAR all OCSM and RCM DTCs.
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