Pinpoint Test F: DTC B2293 - Restraint System - Air Bag Fault
- F1 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: 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/Retrieve and Record Continuous Memory DTCs.
- Enter the following diagnostic mode on the scan tool: View and Record DTC B2293 Fault PIDs.
- Was on-demand DTC B2293 retrieved?
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 F2.
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 F38.
- F2 CHECK THE DRIVER AND PASSENGER AIR BAG MODULES
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- If the flagged fault was reported for the driver air bag module:
- Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE .
- Connect the restraint system diagnostic tools 418-F395 (2 required) to driver air bag module squib 1 and squib 2 electrical connectors.
- If the flagged fault was reported for the passenger air bag module:
- Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE - FUSION, MILAN or PASSENGER AIR BAG MODULE - ZEPHYR .
- Connect the restraint system diagnostic tools 418-F395 (2 required) to passenger air bag module C256a and C256b.
- 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 scan tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs.
- Enter the following diagnostic mode on the scan tool: View and Record DTC B2293 PIDs.
- Was on-demand DTC B2293 retrieved?
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 fault PIDs recorded in the Step F1, GO to the appropriate pinpoint test step.
For driver air bag module squib 1 with a short to ground fault, GO to F3.
For driver air bag module squib 1 with a short to battery fault, GO to F5.
For driver air bag module squib 1 with an open circuit fault, GO to F7.
For driver air bag module squib 1 with a low resistance fault, GO to F11.
For passenger air bag module squib 1 with a short to ground fault, GO to F14.
For passenger air bag module squib 1 with a short to battery fault, GO to F15.
For passenger air bag module squib 1 with an open circuit fault, GO to F16.
For passenger air bag module squib 1 with a low resistance fault, GO to F18.
For driver air bag module squib 2 with a short to ground fault, GO to F20.
For driver air bag module squib 2 with a short to battery fault, GO to F22.
For driver air bag module squib 2 with an open circuit fault, GO to F24.
For driver air bag module squib 2 with a low resistance fault, GO to F28.
For passenger air bag module squib 2 with a short to ground fault, GO to F31.
For passenger air bag module squib 2 with a short to battery fault, GO to F32.
For passenger air bag module squib 2 with an open circuit fault, GO to F33.
For passenger air bag module squib 2 with a low resistance fault, GO to F35.
No : If the fault PID was for the driver air bag module in Step F1, INSTALL a new driver air bag module. REFER to DRIVER AIR BAG MODULE . GO to F39.
If the fault PID was for the passenger air bag module in Step F1, INSTALL a new passenger air bag module. REFER to PASSENGER AIR BAG MODULE - FUSION, MILAN or PASSENGER AIR BAG MODULE - ZEPHYR . GO to F39.
- F3 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: RCM C310a and C310b.
- Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Measure the resistance between RCM C310a-4, circuit CR101 (VT/BN), harness side and ground; and between RCM C310a-3, circuit RR101 (YE/GN), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to F37.
No : GO to F4.
- F4 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218a.
- Measure the resistance between RCM C310a-4, circuit CR101 (VT/BN), harness side and ground; and between RCM C310a-3, circuit RR101 (YE/GN), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR101 (VT/BN) or circuit RR101 (YE/GN). GO to F39.
- F5 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and 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.
- Measure the voltage between driver air bag module squib 1 electrical connector, circuit CR101 (VT/BN), harness side and ground; and between driver air bag module squib 1 electrical connector, circuit RR101 (YE/GN), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : GO to F37.
No : GO to F6.
- F6 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE CLOCKSPRING
- Key in OFF position.
- Disconnect: Clockspring C218a.
- Key in ON position.
- Measure the voltage between clockspring C218a-1, circuit CR101 (VT/BN), harness side and ground; and between clockspring C218a-9, circuit RR101 (YE/GN), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR101 (VT/BN) or circuit RR101 (YE/GN). GO to F39.
- F7 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-4, circuit CR101 (VT/BN), harness side and driver air bag module squib 1 electrical connector, circuit CR101 (VT/BN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F9.
No : GO to F8.
- F8 CHECK CIRCUIT CR101 (VT/BN) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218a.
- Measure the resistance between RCM C310a-4, circuit CR101 (VT/BN), harness side and clockspring C218a-1, circuit CR101 (VT/BN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit CR101 (VT/BN). GO to F39.
- F9 CHECK CIRCUIT RR101 (YE/GN) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Measure the resistance between RCM C310a-3, circuit RR101 (YE/GN), harness side and driver air bag module squib 1 electrical connector, circuit RR101 (YE/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F37.
No : GO to F10.
- F10 CHECK CIRCUIT RR101 (YE/GN) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218a.
- Measure the resistance between RCM C310a-3, circuit RR101 (YE/GN), harness side and clockspring C218a-9, circuit RR101 (YE/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit RR101 (YE/GN). GO to F39.
- F11 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR LOW RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE AND THE RCM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Measure the resistance between driver air bag module squib 1 electrical connector, circuit CR101 (VT/BN), harness side and circuit RR101 (YE/GN), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F37.
No : GO to F12.
- F12 CHECK THE RCM FOR LOW RESISTANCE
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a pin 3, and C310a pin 4, component side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F13.
No : GO to F37.
- F13 CHECK CIRCUIT CR101 (VT/BN) AND CIRCUIT RR101 (YE/GN) FOR LOW RESISTANCE BETWEEN THE CLOCKSPRING AND THE RCM
- Connect: RCM C310a and C310b.
- Disconnect: Clockspring C218a.
- Measure the resistance between clockspring C218a-1, circuit CR101 (VT/BN), harness side and C218a-9, circuit RR101 (YE/GN), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit CR101 (VT/BN) and circuit RR101 (YE/GN). GO to F39.
- F14 CHECK CIRCUIT CR103 (GY/BU) AND CIRCUIT RR103 (VT/GN) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-1, circuit CR103 (GY/BU), harness side and ground; and between RCM C310a-2, circuit RR103 (VT/GN), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to F37.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR103 (GY/BU) or circuit RR103 (VT/GN). GO to F39.
- F15 CHECK CIRCUIT CR103 (GY/BU) AND CIRCUIT RR103 (VT/GN) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and 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.
- Measure the voltage between passenger air bag C256a-1, circuit CR103 (GY/BU), harness side and ground; and between passenger air bag C256a-2, circuit RR103 (VT/GN), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : GO to F37.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR103 (GY/BU) or circuit RR103 (VT/GN). GO to F39.
- F16 CHECK CIRCUIT CR103 (GY/BU) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-1, circuit CR103 (GY/BU), harness side and passenger air bag module C256a-1, circuit CR103 (GY/BU), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F17.
No : REPAIR circuit CR103 (GY/BU). GO to F39.
- F17 CHECK CIRCUIT RR103 (VT/GN) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Measure the resistance between RCM C310a-2, circuit RR103 (VT/GN), harness side and passenger air bag module C256a-2, circuit RR103 (VT/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F37.
No : REPAIR circuit RR103 (VT/GN). GO to F39.
- F18 CHECK CIRCUIT CR103 (GY/BU) AND CIRCUIT RR103 (VT/GN) FOR LOW RESISTANCE BETWEEN THE PASSENGER AIR BAG MODULE AND THE RCM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool.
- Measure the resistance between passenger air bag module C256a-1, circuit CR103 (GY/BU), harness side and C256a-2, circuit RR103 (VT/GN), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F37.
No : GO to F19.
- F19 CHECK THE RCM FOR LOW RESISTANCE
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a pin 1, component side, and C310a pin 2, component side.
- Is the resistance greater than 10,000 ohms?
Yes : REPAIR circuit CR103 (GY/BU) and circuit RR103 (VT/GN). GO to F39.
No : GO to F37.
- F20 CHECK CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: RCM C310a and C310b.
- Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Measure the resistance between RCM C310a-16, circuit CR102 (BU), harness side and ground; and between RCM C310a-15, circuit RR102 (WH), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to F37.
No : GO to F21.
- F21 CHECK CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218a.
- Measure the resistance between RCM C310a-i6, circuit CR102 (BU), harness side and ground; and between RCM C310a-15, circuit RR102 (WH), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR102 (BU) or circuit RR102 (WH). GO to F39.
- F22 CHECK CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and 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.
- Measure the voltage between driver air bag module squib 2 electrical connector, circuit CR102 (BU), harness side and ground; and driver air bag module squib 2 electrical connector, circuit RR102 (WH), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : GO to F37.
No : GO to F23.
- F23 CHECK CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE CLOCKSPRING
- Key in OFF position.
- Disconnect: Clockspring C218a.
- Key in ON position.
- Measure the voltage between clockspring C218a-2, circuit CR102 (BU), harness side and ground; and between clockspring C218a-10, circuit RR102 (WH), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR102 (BU) or circuit RR102 (WH). GO to F39.
- F24 CHECK CIRCUIT CR102 (BU) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-16, circuit CR102 (BU), harness side and driver air bag module squib 2 electrical connector, circuit CR102 (BU), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F26.
No : GO to F25.
- F25 CHECK CIRCUIT CR102 (BU) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218b.
- Measure the resistance between RCM C310a-16, circuit CR102 (BU), harness side and clockspring C218a-2, circuit CR102 (BU), harness side.
- Is the resistance less than 0.5 ohm?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit CR102 (BU). GO to F39.
- F26 CHECK CIRCUIT RR102 (WH) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Measure the resistance between RCM C310a-15, circuit RR102 (WH), harness side and driver air bag module squib 2 electrical connector, circuit RR102 (WH), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F37.
No : GO to F27.
- F27 CHECK CIRCUIT RR102 (WH) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING
- Disconnect: Clockspring C218b.
- Measure the resistance between RCM C310a-15, circuit RR102 (WH), harness side and clockspring C218a-10, circuit RR102 (WH), harness side.
- Is the resistance less than 0.5 ohm?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit RR102 (WH). GO to F39.
- F28 CHECK FOR LOW RESISTANCE ON CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Measure the resistance between driver air bag module squib 2 electrical connector, circuit CR102 (BU), harness side and circuit RR102 (WH), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F37.
No : GO to F29.
- F29 CHECK THE RCM FOR LOW RESISTANCE
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-16, circuit CR102 (BU), component side and C310a-15, circuit RR102 (WH), component side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F30.
No : GO to F37.
- F30 CHECK FOR LOW RESISTANCE ON CIRCUIT CR102 (BU) AND CIRCUIT RR102 (WH) BETWEEN THE DRIVER AIR BAG MODULE AND THE CLOCKSPRING
- Connect: RCM C310a and C310b.
- Disconnect: Clockspring C218a.
- Measure the resistance between clockspring C218a-2, circuit CR102 (BU), harness side and C218a-10, circuit RR102 (WH), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to F39.
No : REPAIR circuit CR102 (BU) and circuit RR102 (WH). GO to F39.
- F31 CHECK CIRCUIT CR104 (YE/GY) AND CIRCUIT RR104 (WH/BU) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-5, circuit CR104 (YE/GY), harness side and ground; and between RCM C310a-6, circuit RR104 (WH/BU), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to F37.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR104 (YE/GY) or circuit RR104 (WH/BU). GO to F39.
- F32 CHECK CIRCUIT CR104 (YE/GY) AND CIRCUIT RR104 (WH/BU) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and 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.
- Measure the voltage between passenger air bag module C256b-1, circuit CR104 (YE/GY), harness side and ground; and between passenger air bag module C256b-2, circuit RR104 (WH/BU), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : GO to F37.
No : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.
REPAIR circuit CR104 (YE/GY) or circuit RR104 (WH/BU). GO to F39.
- F33 CHECK CIRCUIT CR104 (YE/GY) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a-5, circuit CR104 (YE/GY), harness side and passenger air bag module C256b-1, circuit CR104 (YE/GY), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F34.
No : REPAIR circuit CR104 (YE/GY). GO to F39.
- F34 CHECK CIRCUIT RR104 (WH/BU) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Measure the resistance between RCM C310a-6, circuit RR104 (WH/BU), harness side and passenger air bag module C256b-2, circuit RR104 (WH/BU), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to F37.
No : REPAIR circuit RR104 (WH/BU). GO to F39.
- F35 CHECK FOR LOW RESISTANCE ON CIRCUIT CR104 (YE/GY) AND CIRCUIT RR104 (WH/BU) BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool.
- Measure the resistance between passenger air bag module C256b-1, circuit CR104 (YE/GY), harness side and C256b-2, circuit RR104 (WH/BU), harness side.
- Is the resistance greater than 10,000 ohms?
Yes : GO to F37.
No : GO to F36.
- F36 CHECK THE RCM FOR LOW RESISTANCE
- Disconnect: RCM C310a and C310b.
- Measure the resistance between RCM C310a pin 5, component side and C310a pin 6, component side.
- Is the resistance greater than 10,000 ohms?
Yes : REPAIR circuit CR104 (YE/GY) and circuit RR104 (WH/BU). GO to F39.
No : GO to F37.
- F37 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.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Connect: Restraint System Diagnostic Tools.
- Connect: RCM C310a and C310b.
- 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 scan tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs.
- Enter the following diagnostic mode on the scan tool: View and Record DTC B2293 Fault PIDs.
- Was on-demand DTC B2293 retrieved?
Yes : INSTALL and CONFIGURE a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to F39.
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 F39.
- F38 CHECK FOR AN INTERMITTENT FAULT
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- If the flagged fault was reported for the driver air bag module:
- Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE .
- Connect restraint system diagnostic tools 418-F395 (2 required) to the driver air bag module squib 1 and squib 2 electrical connectors.
- If the flagged fault was reported for the passenger air bag module:
- Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE - FUSION, MILAN or PASSENGER AIR BAG MODULE - ZEPHYR .
- Connect the restraint system diagnostic tools 418-F395 (2 required) to the passenger air bag module C256a and C256b.
- 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 scan tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs.
- Enter the following diagnostic mode on the scan tool: View and Record DTC B2293 Fault PIDs.
- Was the on-demand DTC B2293 retrieved?
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.
CHECK for causes of the intermittent fault at or near the affected air bag module connector. REPAIR any intermittent concerns found.
If an intermittent concern was found and repaired, GO to F39.
If an intermittent concern was not found and repaired, USE the fault PIDs recorded and GO to the appropriate pinpoint test step.
For driver air bag module squib 1 with a short to ground fault, GO to F3.
For driver air bag module squib 1 with a short to battery fault, GO to F5.
For driver air bag module squib 1 with an open circuit fault, GO to F7.
For driver air bag module squib 1 with a low resistance fault, GO to F11.
For passenger air bag module squib 1 with a short to ground fault, GO to F14.
For passenger air bag module squib 1 with a short to battery fault, GO to F15.
For passenger air bag module squib 1 with an open circuit fault, GO to F16.
For passenger air bag module squib 1 with a low resistance fault, GO to F18.
For driver air bag module squib 2 with a short to ground fault, GO to F20.
For driver air bag module squib 2 with a short to battery fault, GO to F22.
For driver air bag module squib 2 with an open circuit fault, GO to F24.
For driver air bag module squib 2 with a low resistance fault, GO to F28.
For passenger air bag module squib 2 with a short to ground fault, GO to F31.
For passenger air bag module squib 2 with a short to battery fault, GO to F32.
For passenger air bag module squib 2 with an open circuit fault, GO to F33.
For passenger air bag module squib 2 with a low resistance fault, GO to F35.
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 F39.
- F39 CHECK FOR ADDITIONAL DTCs
- Refer to the continuous memory DTCs recorded during Step F1.
- Were any continuous memory DTCs retrieved during Step F1 ?
Yes : Do not clear any DTCs until all DTCs have been resolved. GO to the SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 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 OCS module and RCM DTCs.