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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test D: LFC 18 DTC B1884 - PAD Warning Lamp Circuit Failure >> Pinpoint Test D: LFC 18 DTC B1884 - Pad Warning Lamp Circuit Failure

Pinpoint Test D: LFC 18 DTC B1884 - Pad Warning Lamp Circuit Failure

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. 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.
NOTE: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: SRS components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS. 
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
    • Was on-demand DTC B1884 retrieved? 
    1. YES  : If the PAD indicator is illuminated continuously,  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 RR116 (BN/GN) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: PAD Indicator C2286
    • Measure the resistance between the PAD indicator C2286-3, circuit RR116 (BN/GN), harness side and ground.
      • Fig 1: Measuring Resistance
      GF0016793Courtesy of FORD MOTOR CO.
    • 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
    • Measure the resistance between RCM C310a pin 22, component side and ground.
      • Fig 2: Checking RCM For Low Resistance
      GF0008793Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit RR116 (BN/GN). Go to  D9.
    2. NO  : Go to  D7.
  4. D4 CHECK CIRCUIT RR116 (BN/GN) 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 C2286
    • Measure the resistance between the PAD indicator C2286-3, circuit RR116 (BN/GN), harness side and the RCM C310a-22, circuit RR116 (BN/GN), harness side.
      • Fig 3: Measuring Resistance Between PAD Indicator C2286-3, Circuit CR116 (GN/WH) & RCM C310A-22
      GF0026619Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  D5.
    2. NO  : REPAIR circuit RR116 (BN/GN). 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.
    • Measure the voltage between the PAD indicator C2286-1, circuit CBP46 (WH/BU), harness side and ground.
      • Fig 4: Checking Circuit For Voltage
      GF0016798Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D6.
    2. NO  : VERIFY that smart junction box (SJB) fuse 46 (7.5A) is OK. If OK, REPAIR circuit CBP46 (WH/BU). Go to  D9.
  6. D6 CHECK THE PAD INDICATOR 
    • Key in OFF position.
    • Deactivate the SRS. Refer to Supplemental Restraint System (SRS) Deactivation and Reactivation .
    • Connect: PAD Indicator C2286
    • Key in ON position.
    • Connect a fused jumper wire between RCM C310a-22, circuit RR116 (BN/GN), harness side and ground.
      • Fig 5: Checking PAD Indicator Lamp
      GF0008796Courtesy of FORD MOTOR CO.
    • Does the PAD indicator illuminate? 
    1. YES  : Go to  D7.
    2. NO  : INSTALL a new PAD indicator. REFER to Passenger Air Bag Deactivation (PAD) Indicator - Taurus X  or Passenger Air Bag Deactivation (PAD) Indicator - Taurus, Sable . Go to  D9.
  7. D7 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system diagnostic tools, 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 and CARRY OUT programmable module installation (PMI). REFER to Restraints Control Module (RCM) . Go to  D9.
    2. NO  : CHECK for causes of intermittent open or short to ground on circuit RR116 (BN/GN). 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. Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test.  REPAIR any intermittent wiring, terminal or connector concerns found. Go to  D9.
  8. D8 CHECK FOR AN INTERMITTENT FAULT 
    • 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 RR116 (BN/GN). 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. Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test.  REPAIR any intermittent wiring, terminal or connector concerns found. Go to  D9.
  9. D9 CHECK FOR ADDITIONAL SRS DTCs 
    • Key in OFF position.
      WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.
    • Reconnect all SRS components (If previously disconnected).
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Self Test/Retrieve and Record On-Demand and Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: Clear all RCM and OCSM Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: Self Test/RCM
    • Are any RCM DTCs retrieved indicating a fault? 
    1. YES  : Do not clear any DTCs until all DTCs have been resolved. Go to the SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DTC TABLE  for pinpoint test direction.
    2. NO  : PROVE OUT the SRS. REPAIR is complete. RETURN the vehicle to the customer.
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