Pinpoint Test G: LFC 33 And 34/DTC B2292 - Restraint System - Safety Belt PRETENSIONER Fault

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. 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.

G1 CHECK FOR A HARD OR INTERMITTENT DTC
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: 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 these instructions may result in the inadvertent deployment of the safety canopy and risk of personal injury.

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.

WARNING: Never probe the electrical connector on a safety canopy module. Doing so can result in safety canopy deployment.

NOTE: After diagnosing or repairing a supplemental restraint system (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 diagnostic tool: Retrieve/Flag Continuous DTCs.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2292.
- Was DTC B2292 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 G2.
- No : This is an intermittent fault. The fault condition is not present at this time. GO to G18.
G2 CHECK THE PRETENSIONER
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Affected Safety Belt Buckle Pretensioner C3133 (Driver) or C3134 (Passenger).
- Connect: Restraint System Diagnostic Tool 418-133 to the Affected Safety Belt Buckle Pretensioner C3133 (Driver) or C3134 (Passenger).
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2292.
- Was DTC B2292 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.
  Using the flagged faults recorded in the Step G1, GO to the appropriate pinpoint test step.
  
  If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
  
  For driver safety belt pretensioner (DF_PRT) with a low resistance (LOWRES) fault, GO to G3.
  
  For DF_PRT with an open circuit (O_CIR) fault, GO to G4.
  
  For DF_PRT with a short to battery (STB) fault, GO to G6.
  
  For DF_PRT with a short to ground (STG) fault, GO to G8.
  
  For passenger safety belt pretensioner (PF_PRT) with a low resistance (LOWRES) fault, GO to G10.
  
  For PF_PRT with an open circuit (O_CIR) fault, GO to G11.
  
  For PF_PRT with a short to battery (STB) fault, GO to G13.
  
  For PF_PRT with a short to ground (STG) fault, GO to G15.
- No : INSPECT the buckle pretensioner jumper harness for damage. If no concern is found, INSTALL a new driver or passenger safety belt pretensioner. REFER to SAFETY BELT SYSTEM . GO to G19.
G3 CHECK THE DRIVER SAFETY BELT PRETENSIONER CIRCUIT 1079 (LG/RD) AND CIRCUIT 1080 (LG/BK) FOR LOW RESISTANCE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 32, circuit 1080 (LG/BK), and pin 31, circuit 1079 (LG/RD), harness side.
  
  Fig 1: Measuring Resistance Between RCM C310b Pin 32, Circuit 1080 (LG/BK), And Pin 31, Circuit 1079 (LG/RD), Harness Side
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G17.
- No : REPAIR circuit 1079 (LG/RD) and circuit 1080 (LG/BK). GO to G19.
G4 CHECK CIRCUIT 1079 (LG/RD) FOR AN OPEN
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 31, circuit 1079 (LG/RD), harness side and driver safety belt buckle pretensioner C3133 pin 1, circuit 1079 (LG/RD), harness side.
  
  Fig 2: Checking Circuit 1079 (LG/RD) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 0.5 ohm?
- Yes : GO to G5.
- No : REPAIR circuit 1079 (LG/RD). GO to G19.
G5 CHECK CIRCUIT 1080 (LG/BK) FOR AN OPEN
- Measure the resistance between RCM C310b pin 32, circuit 1080 (LG/BK), harness side and driver safety belt buckle pretensioner C3133 pin 2, circuit 1080 (LG/BK), harness side.
  
  Fig 3: Checking Circuit 1080 (LG/BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 0.5 ohm?
- Yes : GO to G17.
- No : REPAIR circuit 1080 (LG/BK). GO to G19.
G6 CHECK CIRCUIT 1079 (LG/RD) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Deactivate the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION .
- Disconnect: Driver Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Key in ON position.
- Measure the voltage between RCM C310b pin 31, circuit 1079 (LG/RD), harness side and ground.
  
  Fig 4: Measuring Voltage Between RCM C310b Pin 31 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 0.2 volt?
- Yes : GO to G7.
- No : REPAIR circuit 1079 (LG/RD). GO to G19.
G7 CHECK CIRCUIT 1080 (LG/BK) FOR A SHORT TO VOLTAGE
- Measure the voltage between RCM C310b pin 32, circuit 1080 (LG/BK), harness side and ground.
  
  Fig 5: Measuring Voltage Between RCM C310b Pin 32 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 0.2 volt?
- Yes : GO to G17.
- No : REPAIR circuit 1080 (LG/BK). GO to G19.
G8 CHECK CIRCUIT 1079 (LG/RD) FOR A SHORT TO GROUND
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 31, circuit 1079 (LG/RD), harness side and ground.
  
  Fig 6: Measuring Resistance Between RCM C310b Pin 31 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G9.
- No : REPAIR circuit 1079 (LG/RD). GO to G19.
G9 CHECK CIRCUIT 1080 (LG/BK) FOR A SHORT TO GROUND
- Measure the resistance between RCM C310b pin 32, circuit 1080 (LG/BK), harness side and ground.
  
  Fig 7: Measuring Resistance Between RCM C310b Pin 32 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G17.
- No : REPAIR circuit 1080 (LG/BK). GO to G19.
G10 CHECK THE PASSENGER SAFETY BELT PRETENSIONER CIRCUIT 1081 (YE/RD) AND CIRCUIT 1082 (YE/BK) FOR LOW RESISTANCE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 34, circuit 1082 (YE/BK), and pin 33, circuit 1081 (YE/RD), harness side.
  
  Fig 8: Checking Passenger Safety Belt Pretensioner Circuit 1081 (YE/RD) And Circuit 1082 (YE/BK) For Low Resistance
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G17.
- No : REPAIR circuit 1082 (YE/BK) and circuit 1081 (YE/RD). GO to G19.
G11 CHECK CIRCUIT 1081 (YE/RD) FOR AN OPEN
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 33, circuit 1081 (YE/RD), harness side and passenger safety belt buckle pretensioner C3134 pin 1, circuit 1081 (YE/RD), harness side.
  
  Fig 9: Checking Circuit 1081 (YE/RD) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 0.5 ohm?
- Yes : GO to G12.
- No : REPAIR circuit 1081 (YE/RD). GO to G19.
G12 CHECK CIRCUIT 1082 (YE/BK) FOR AN OPEN
- Measure the resistance between RCM C310b pin 34, circuit 1082 (YE/BK), harness side and passenger safety belt buckle pretensioner C3134 pin 2, circuit 1082 (YE/BK), harness side.
  
  Fig 10: Checking Circuit 1082 (YE/BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 0.5 ohm?
- Yes : GO to G17.
- No : REPAIR circuit 1082 (YE/BK). GO to G19.
G13 CHECK CIRCUIT 1081 (YE/RD) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Deactivate the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION .
- Disconnect: Passenger Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Key in ON position.
- Measure the voltage between RCM C310b pin 33, circuit 1081 (YE/RD), harness side and ground.
  
  Fig 11: Measuring Voltage Between RCM C310b Pin 33 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 0.2 volt?
- Yes : GO to G14.
- No : REPAIR circuit 1081 (YE/RD). GO to G19.
G14 CHECK CIRCUIT 1082 (YE/BK) FOR A SHORT TO VOLTAGE
- Measure the voltage between RCM C310b pin 34, circuit 1082 (YE/BK), harness side and ground.
  
  Fig 12: Measuring Voltage Between RCM C310b Pin 34 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 0.2 volt?
- Yes : GO to G17.
- No : REPAIR circuit 1082 (YE/BK). GO to G19.
G15 CHECK CIRCUIT 1081 (YE/RD) FOR A SHORT TO GROUND
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Safety Belt Pretensioner Restraint System Diagnostic Tool.
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 33, circuit 1081 (YE/RD), harness side and ground.
  
  Fig 13: Measuring Resistance Between RCM C310b Pin 33 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G16.
- No : REPAIR circuit 1081 (YE/RD). GO to G19.
G16 CHECK CIRCUIT 1082 (YE/BK) FOR A SHORT TO GROUND
- Measure the resistance between RCM C310b pin 34, circuit 1082 (YE/BK), harness side and ground.
  
  Fig 14: Measuring Resistance Between RCM C310b Pin 34 Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 1,000,000 ohms?
- Yes : GO to G17.
- No : REPAIR circuit 1082 (YE/BK). GO to G19.
G17 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.
- Key in OFF position.
- Connect: Restraint System Diagnostic Tools.
- Connect: RCM C310b.
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2292.
- Was DTC B2292 retrieved during the on-demand self test?
- Yes : If a "?" was flagged by the scan tool, CARRY OUT the entire pinpoint test. INSTALL a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to G19.
- 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. REPAIR any intermittent concerns found. GO to G19.
G18 CHECK FOR AN INTERMITTENT FAULT
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Affected Safety Belt Buckle Pretensioner C3133 (Driver) or C3134 (Passenger).
- Connect: Restraint System Diagnostic Tool 418-133 to the Affected Safety Belt Buckle Pretensioner C3133 (Driver) or C3134 (Passenger).
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2292.
- Was DTC B2292 retrieved during the on-demand self test?
- Yes : CHECK for causes of the intermittent fault at or near the affected safety belt pretensioner electrical connector. REPAIR any intermittent concern found.
  If an intermittent concern was found and repaired, GO to G19.
  
  If an intermittent concern was not found and repaired, USE the flagged faults recorded and GO to the appropriate pinpoint test step.
  
  If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
  
  For driver safety belt pretensioner (DF_PRT) with a low resistance (LOWRES) fault, GO to G3.
  
  For DF_PRT with an open circuit (O_CIR) fault, GO to G4.
  
  For DF_PRT with a short to battery (STB) fault, GO to G6.
  
  For DF_PRT with a short to ground (STG) fault, GO to G8.
  
  For passenger safety belt pretensioner (PF_PRT) with a low resistance (LOWRES) fault, GO to G10.
  
  For PF_PRT with an open circuit (O_CIR) fault, GO to G11.
  
  For PF_PRT with a short to battery (STB) fault, GO to G13.
  
  For PF_PRT with a short to ground (STG) fault, GO to G15.
- 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. REPAIR any intermittent concerns found. GO to G19.
G19 CHECK FOR ADDITIONAL DTCs
- Refer to the continuous DTCs recorded during Step G1.
- Were any continuous DTCs retrieved during Step G1?
- Yes : Do not clear any DTCs until all DTCs have been resolved. GO to the RESTRAINTS CONTROL MODULE (RCM) DIAGNOSTIC TROUBLE CODE (DTC) TABLE 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.