Pinpoint Test I: LFC 24 And 25/DTC B2294 - Restraint System - Side Air Curtain Module Fault
- I1 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: 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 side air curtain module. Doing so can result in side air curtain deployment.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 diagnostic tool: Retrieve/Flag/Record 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 B2294/Record All Flagged Faults.
- Was DTC B2294 retrieved during the on-demand self test?
- Yes
: Vehicles with side air curtain modules
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 I3.
Vehicles without side air curtain modules
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 I2.
- No : This is an intermittent fault. The fault condition is not present at this time. GO to I17.
- I2 CHECK THE SIDE AIR CURTAIN MODULE BRIDGE RESISTOR
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: Driver and Passenger Side Air Curtain Bridge Resistor.
- Transfer the driver side air curtain bridge resistor to the passenger side and passenger side air curtain bridge resistor to the driver side.
- Connect: Driver and Passenger Side Air Curtain Bridge Resistor.
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2294/Record All Flagged Faults.
- Did the flagged fault transfer between the driver side and passenger side?
- Yes : INSTALL a new side air curtain bridge resistor. GO to I18.
- No
: Using the flagged faults recorded in Step I1, GO to the appropriate pinpoint test step.
If a flagged fault of "?" was recorded in Step I1, multiple faults exist and the entire pinpoint test must be carried out.
For driver side air curtain module (DFCURTN) with a short to battery (STB) fault, GO to I4.
For driver side air curtain module (DFCURTN) with a short to ground (STG) fault, GO to I5.
For driver side air curtain module (DFCURTN) with an open circuit (OCIR) fault, GO to I6.
For driver side air curtain module (DFCURTN) with a low resistance (LOWRES) fault, GO to I8.
For passenger side air curtain module (PFCURTN) with a short to battery (STB) fault, GO to I10.
For passenger side air curtain module (PFCURTN) with a short to ground (STG) fault, GO to I11.
For passenger side air curtain module (PFCURTN) with an open circuit (OCIR) fault, GO to I12.
For passenger side air curtain module (PFCURTN) with a low resistance (LOWRES) fault, GO to I14.
- I3 CHECK THE DRIVER AND PASSENGER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: The Affected Side Air Curtain Module C9006 (Driver) or C9007 (Passenger).
- Connect: Restraint System Diagnostic Tool 501-097 to the Affected Side Air Curtain Module C9006 (Driver) or C9007 (Passenger).
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2294/Record All Flagged Faults.
- Was DTC B2294 retrieved during the on-demand self test?
- Yes
: Using the flagged faults recorded in Step I1, GO to the appropriate pinpoint test step.
If a flagged fault of "?" was recorded in Step I1, multiple faults exist and the entire pinpoint test must be carried out.
For driver side air curtain module (DFCURTN) with a short to battery (STB) fault, GO to I4.
For driver side air curtain module (DFCURTN) with a short to ground (STG) fault, GO to I5.
For driver side air curtain module (DFCURTN) with an open circuit (OCIR) fault, GO to I6.
For driver side air curtain module (DFCURTN) with a low resistance (LOWRES) fault, GO to I8.
For passenger side air curtain module (PFCURTN) with a short to battery (STB) fault, GO to I10.
For passenger side air curtain module (PFCURTN) with a short to ground (STG) fault, GO to I11.
For passenger side air curtain module (PFCURTN) with an open circuit (OCIR) fault, GO to I12.
For passenger side air curtain module (PFCURTN) with a low resistance (LOWRES) fault, GO to I14.
- No
: If a flagged fault of "?" was recorded in Step I1, multiple faults exist and the entire pinpoint test must be carried out.
If a fault was flagged against the driver side air curtain module in Step I1, INSTALL a new driver side air curtain module. REFER to SIDE AIR CURTAIN MODULE in this article. GO to I18.
If a fault was flagged against the passenger side air curtain module in Step I1, INSTALL a new passenger side air curtain module. REFER to SIDE AIR CURTAIN MODULE in this article. GO to I18.
- I4 CHECK CIRCUIT 30S-JA50 (RD/BK) AND CIRCUIT 31S-JA50 (BK/RD) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE DRIVER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Deactivate the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION in this article.
- Disconnect: RCM C310b.
- Disconnect: Driver Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Driver Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Key in ON position.
- Measure the voltage between RCM C310b pin 3, circuit 30S-JA50 (RD/BK), harness side and ground; and between RCM C310b pin 4, circuit 31S-JA50 (BK/RD), harness side and ground.
- Are the voltages less than 0.2 volt?
- I5 CHECK CIRCUIT 30S-JA50 (RD/BK) AND CIRCUIT 31S-JA50 (BK/RD) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: RCM C310b.
- Disconnect: Driver Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Driver Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Measure the resistance between RCM C310b pin 3, circuit 30S-JA50 (RD/BK), harness side and ground; and between RCM C310b pin 4 circuit 31S-JA50 (BK/RD), harness side and ground.
- Are the resistances greater than 1.000.000 ohms?
- I6 CHECK CIRCUIT 30S-JA50 (RD/BK) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: RCM C310b.
- Disconnect: Driver Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Driver Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Vehicles without side air curtain modules, measure the resistance between RCM C310b pin 3, circuit 30S-JA50 (RD/BK), harness side and driver side air curtain bridge resistor C2283 pin 2, circuit 30S-JA50 (RD/BK), harness side.
- Vehicles with side air curtain modules, measure the resistance between RCM C310b pin 3, circuit 30S-JA50 (RD/BK), harness side and driver side air curtain module C9006 pin 1, circuit 30S-JA50 (RD/BK), harness side.
- Is the resistance less than 0.5 ohm?
- I7 CHECK CIRCUIT 31S-JA50 (BK/RD) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SIDE AIR CURTAIN MODULE
- Vehicles without side air curtain modules, measure the resistance between RCM C310b pin 4, circuit 31S-JA50 (BK/RD), harness side and driver side air curtain bridge resistor C2283 pin 1, circuit 31S-JA50 (BK/RD), harness side.
- Vehicles with side air curtain modules, measure the resistance between RCM C310b pin 4, circuit 31S-JA50 (BK/RD), harness side and driver side air curtain module C9006 pin 2, circuit 31S-JA50 (BK/RD), harness side.
- Is the resistance less than 0.5 ohm?
- I8 CHECK FOR LOW RESISTANCE ON CIRCUIT 30S-JA50 (RD/BK) AND CIRCUIT 31S-JA50 (BK/RD) BETWEEN THE DRIVER SIDE AIR CURTAIN MODULE AND THE RCM
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: Driver Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Driver Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Vehicles without side air curtain modules, measure the resistance between driver side air curtain bridge resistor C2283 pin 1, circuit 31S-JA50 (BK/RD), and C2283 pin 2, circuit 30S-JA50 (RD/BK), harness side.
- Vehicles with side air curtain modules, measure the resistance between driver side air curtain module C9006 pin 2, circuit 31S-JA50 (BK/RD), and C9006 pin 1, circuit 30S-JA50 (RD/BK), harness side.
- Is the resistance greater than 10, 000 ohms?
- I9 MEASURE RESISTANCE BETWEEN RCM CIRCUIT 30S-JA50 (RD/BK) AND CIRCUIT 31S-JA50 (BK/RD)
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 3, circuit 30S-JA50 (RD/BK), and pin 4, circuit 31S-JA50 (BK/RD), component side.
- Is the resistance greater than 10,000 ohms?
- I10 CHECK CIRCUIT 30S-JA51 (RD/BU) AND CIRCUIT 31S-JA51 (BK/BU) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE PASSENGER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Deactivate the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION in this article.
- Disconnect: RCM C310b.
- Disconnect: Passenger Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Passenger Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Key in ON position.
- Measure the voltage between RCM C310b pin 5, circuit 30S-JA51 (RD/BU), harness side and ground; and between RCM C310b pin 6, circuit 31S-JA51 (BK/BU), harness side and ground.
- Are the voltages less than 0.2 volt?
- I11 CHECK CIRCUIT 30S-JA51 (RD/BU) AND CIRCUIT 31S-JA51 (BK/BU) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: RCM C310b.
- Disconnect: Passenger Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Passenger Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Measure the resistance between RCM C310b pin 5, circuit 30S-JA51 (RD/BU), harness side and ground; and between RCM C310b pin 6, circuit 31S-JA51 (BK/BU), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
- I12 CHECK CIRCUIT 30S-JA51 (RD/BU) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER SIDE AIR CURTAIN MODULE
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: RCM C310b.
- Disconnect: Passenger Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Passenger Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Vehicles without side air curtain modules, measure the resistance between RCM C310b pin 5, circuit 30S-JA51 (RD/BU), harness side and passenger side air curtain bridge resistor C2284 pin 2, circuit 30S-JA51 (RD/BU), harness side.
- Vehicles with side air curtain modules, measure the resistance between RCM C310b pin 5, circuit 30S-JA51 (RD/BU), harness side and passenger side air curtain module C9007 pin 1, circuit 30S-JA51 (RD/BU), harness side.
- Is the resistance less than 0.5 ohm?
- I13 CHECK CIRCUIT 31S-JA51 (BK/BU) FOR OPEN BETWEEN THE RCM AND THE PASSENGER SIDE AIR CURTAIN MODULE
- Vehicles without side air curtain modules, measure the resistance between RCM C310b pin 6, circuit 31S-JA51 (BK/BU), harness side and passenger side air curtain bridge resistor C2284 pin 1, circuit 31S-JA51 (BK/BU), harness side.
- Vehicles without side air curtain modules, measure the resistance between RCM C310b pin 6, circuit 31S-JA51 (BK/BU), harness side and passenger side air curtain module C9007 pin 2, circuit 31S-JA51 (BK/BU), harness side.
- Is the resistance less than 0.5 ohm?
- I14 CHECK FOR LOW RESISTANCE ON CIRCUIT 30S-JA51 (RD/BU) AND CIRCUIT 31S-JA51 (BK/BU) BETWEEN THE PASSENGER SIDE AIR CURTAIN MODULE AND THE RCM
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: Passenger Side Air Curtain Module Restraint System Diagnostic Tool (with Side Air Curtain Modules).
- Disconnect: Passenger Side Air Curtain Bridge Resistor (without Side Air Curtain Modules).
- Vehicles without side air curtain modules, measure the resistance between passenger side air curtain bridge resistor C2284 pin 2, circuit 30S-JA51 (RD/BU), and C2284 pin 1, circuit 31S-JA51 (BK/BU), harness side.
- Vehicles with side air curtain modules, measure the resistance between passenger side air curtain module C9007 pin 1, circuit 30S-JA51 (RD/BU), and C9007 pin 2, circuit 31S-JA51 (BK/BU), harness side.
- Is the resistance greater than 10,000 ohms?
- I15 MEASURE RESISTANCE BETWEEN RCM CIRCUIT 30S-JA51 (RD/BU) AND CIRCUIT 31S-JA51 (BK/BU)
- Disconnect: RCM C310b.
- Measure the resistance between RCM C310b pin 5, circuit 30S-JA51 (RD/BU), and pin 6, circuit 31S-JA51 (BK/BU), component side.
- Is the resistance greater than 10,000 ohms?
- I16 CONFIRM THE RCM FAULT
- Key in OFF position.
- Connect: Restraint System Diagnostic Tools (with Side Air Curtain Modules).
- Connect: Side Air Curtain Bridge Resistors (without Side Air Curtain Modules).
- Connect: RCM C310b.
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: DTC B2294/Record All Flagged Faults.
- Was DTC B2294 retrieved during the on-demand self test?
- Yes : If a "?" was flagged by the Diagnostic tool, CARRY OUT the entire pinpoint test. INSTALL a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) in this article. GO to I18.
- 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 I18.
- I17 CHECK FOR AN INTERMITTENT FAULT
- Key in OFF position.
- Depower the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Disconnect: The Affected Side Air Curtain Module C9006 (Driver) or C9007 (Passenger).
- Connect: Restraint System Diagnostic Tool 501-097 to the Affected Side Air Curtain Module C9006 (Driver) or C9007 (Passenger).
- Repower the system. Do not prove out the system at this time. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test.
- Enter the following diagnostic mode on the diagnostic tool: Flag DTC B2294/Record All Flagged Faults.
- Was DTC B2294 retrieved during on-demand self test?
- Yes
: CHECK for causes of the intermittent fault at or near the affected side air curtain module connector. REPAIR any intermittent concerns found.
If an intermittent concern was found and repaired, GO to I18.
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 side air curtain module (DFCURTN) with a short to battery (STB) fault, GO to I4.
For driver side air curtain module (DFCURTN) with a short to ground (STG) fault, GO to I5.
For driver side air curtain module (DFCURTN) with an open circuit (OCIR) fault, GO to I6.
For driver side air curtain module (DFCURTN) with a low resistance (LOWRES) fault, GO to I8.
For passenger side air curtain module (PFCURTN) with a short to battery (STB) fault, GO to I10.
For passenger side air curtain module (PFCURTN) with a short to ground (STG) fault, GO to I11.
For passenger side air curtain module (PFCURTN) with an open circuit (OCIR) fault, GO to I12.
For passenger side air curtain module (PFCURTN) with a low resistance (LOWRES) fault, GO to I14.
- 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 I18.
- I18 CHECK FOR ADDITIONAL DTCs
- Refer to the continuous DTCs recorded during Step I1.
- Were any continuous DTCs retrieved during Step I1 ?
- Yes : Do not clear any DTCs until all DTCs have been resolved. GO to the RESTRAINTS CONTROL MODULE (RCM) DIAGNOSTIC TROUBLE CODE (DTC) 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 in this article. REPOWER the system. refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article. PROVE OUT the system. CLEAR all DTCs.