Pinpoint Test Ar: DTC B2290 - Occupant Classification System (OCS) Fault
- AR1 CHECK FOR CONTINUOUS AND ON-DEMAND DTCs 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.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.NOTE: Mounting and orientation of the OCS ECU is critical for correct system operation. Failure to correctly position and securely fasten the OCS ECU can set a diagnostic trouble code (DTC) in the restraints control module (RCM). If the vehicle has been in a collision in which the passenger seat may have been damaged, inspect the OCS ECU mounting area for deformation. If damaged, a new OCS service kit must be installed. In addition, make sure the mounting area of the OCS system is restored to the original production configuration (install new as necessary).
- Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Enter the following diagnostic mode on the scan tool: Monitor PID Module Version Status-RCM Version Conflicts with OCS Version.
- Enter the following diagnostic mode on the scan tool: Retrieve/Flag/Record Continuous DTCs.
- Was DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
Vehicles with a production OCS system
For PID Module Version Status that shows RCM Version Conflicts with OCS Version, GO to AR24.
For OCS system with a mounting fault, GO to AR2.
For OCS system with an internal fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
For OCS system with a communications fault, GO to AR3.
For OCS system with a calibration fault, GO to AR9.
For OCS system with a pressure sensor fault, GO to AR10.
Vehicles with a service OCS system
For PID Module Version Status that shows RCM Version Conflicts with OCS Version, GO to AR24.
For OCS system with a mounting fault, GO to AR2.
For OCS system with an internal fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
For OCS system with a communications fault, GO to AR18.
For OCS system with a calibration fault, GO to AR9.
For OCS system with a pressure sensor fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
No : This is an intermittent fault. The fault condition is not present at this time. GO to AR27.
- AR2 CHECK FOR AN OCS MOUNTING FAULT
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.NOTE: The ECU must be correctly positioned and securely fastened in place. Failure to do so can set a diagnostic trouble code (DTC) in the restraints control module (RCM).
- Inspect the OCS ECU for correct mounting location and direction, the OCS ECU fasteners are tight, no damage to the OCS ECU, and no damage to the seat cushion pan.
- Is the OCS ECU correctly located and are the fasteners tight with no damage to components?
Yes : INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
No : REPAIR as necessary. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
- AR3 CHECK THE SEAT WIRING AND CONNECTORS PRODUCTION OCS SYSTEM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Carry out a thorough visual inspection of the OCS system wiring, terminals and connectors, and the related seat wiring harness and body wiring harness terminals and connectors.
- Were any problems noted?
Yes : REPAIR the connectors and wiring as needed. GO to AR28.
No : GO to AR4.
- AR4 CHECK IGNITION CIRCUIT 15-JA60 (GN/RD) FOR AN OPEN PRODUCTION OCS SYSTEM
- Disconnect: RCM C2041a and C2041b.
- Disconnect: Passenger Side Air Bag Module C312e From Passenger Seat C312 (Vehicles equipped with side air bags).
- Connect: Restraint System Diagnostic Tool 501-109 to Passenger Side Air Bag Module C312e (Vehicles equipped with side air bags).
- Disconnect: OCS ECU C3043.
- Repower the system. Do not prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Key in ON position.
- Measure the voltage between OCS ECU C3043-1, circuit 15-JA60 (GN/RD), harness side and ground.
- Is the voltage greater than 10 volts?
Yes : GO to AR5.
No : VERIFY central junction box (CJB) fuse 51 (7.5A) is OK. If OK, REPAIR circuit 15-JA60 (GN/RD). GO to AR28.
- AR5 CHECK GROUND CIRCUIT 91-JA60 (BK/OG) FOR AN OPEN PRODUCTION OCS SYSTEM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Measure the resistance between OCS ECU C3043-14, circuit 91-JA60 (BK/OG), harness side and ground.
- Is the resistance less than 5 ohms?
Yes : GO to AR6.
No : REPAIR circuit 91-JA60 (BK/OG). GO to AR28.
- AR6 CHECK CIRCUIT 4-EC17 (GY/BK)/4-EC18 (GY/BK) FOR AN OPEN BETWEEN THE OCS AND THE RCM - PRODUCTION OCS SYSTEM
- Measure the resistance between RCM C2041b-19, circuit 4-EC18 (GY/BK), harness side and OCS ECU C3043-18, circuit 4-EC17 (GY/BK), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR7.
No : REPAIR circuit 4-EC17 (GY/BK) or circuit 4-EC18 (GY/BK). GO to AR28.
- AR7 CHECK CIRCUIT 5-EC17 (BU/YE)/5-EC18 (BU/BK) FOR AN OPEN BETWEEN THE OCS AND THE RCM - PRODUCTION OCS SYSTEM
- Measure the resistance between RCM C2041b-20, circuit 5-EC18 (BU/BK), harness side and OCS ECU C3043-9, circuit 5-EC17 (BU/YE), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR8.
No : REPAIR circuit 5-EC17 (BU/YE) or circuit 5-EC18 (BU/BK). GO to AR28.
- AR8 CHECK THE RCM NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded.
- Install a known good RCM. Refer to RESTRAINTS CONTROL MODULE (RCM) in this article.
- Connect: RCM C2041a and C2041b.
- Connect: OCS ECU C3043.
- 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 scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
INSTALL a new OCS service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
No : Fault corrected. GO to AR28.
- AR9 CHECK THE OCS SYSTEM - PRODUCTION OCS SYSTEM NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded.
- Key in OFF position.
- Enter the following diagnostic mode on the scan tool: OCS Rezeroing.CAUTION: It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, or an OCS service kit is installed. A diagnostic tool is used to trigger the active command to carry out rezeroing of the OCS system.CAUTION: Make sure the seat is completely assembled before rezeroing.CAUTION: The following precautions must be taken before rezeroing of the OCS system:
- Make sure the OCS system components are connected and no faults are present.
- Make sure the OCS system is not at a temperature below 0°C (32°F) or above 45°C (113°F) when initiating the rezeroing process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 0 C to 45°C (32°F to 113°F) for a minimum of 30 minutes.
- Make sure nothing is present on the passenger seat before rezeroing and nothing is placed on the seat during the rezeroing process.
- Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the rezeroing process.
NOTE: For best results in rezeroing, the OCS system should be at or near room temperature, 10°C to 29°C (50°F to 85°F).NOTE: If the first attempt to rezero the OCS system is unsuccessful, a second attempt must be made. - Using the diagnostic tool, carry out rezeroing of the OCS system.
- Key in OFF position.NOTE: The ignition switch must be cycled after rezeroing the OCS system.
- Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
INSTALL a new OCS service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
No : Fault corrected. GO to AR28.
- AR10 CHECK THE SEAT WIRING AND CONNECTORS PRODUCTION OCS SYSTEM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Carry out a thorough visual inspection of the OCS system wiring, terminals and connectors, and the related seat wiring harness and body wiring harness terminals and connectors.
- Were any problems noted?
Yes : REPAIR the seat connectors and wiring as needed. GO to AR28.
No : GO to AR11.
- AR11 CHECK CIRCUITS 7-JA52 (YE/GN), 8-JA52 (WH/GN) AND 9-JA52 (BN/GN) FOR A SHORT TO VOLTAGE - PRODUCTION OCS SYSTEM
- Disconnect: RCM C2041a and C2041b.
- Disconnect: OCS Pressure Sensor C3042.
- Disconnect: OCS ECU C3043.
- Repower the system. Do not prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Key in ON position.
- Measure the voltage between OCS pressure sensor circuit C3042-1, (YE/GN), harness side and ground; between OCS pressure sensor C3042-2, circuit 8-JA52 (WH/GN), harness side and ground; and between OCS pressure sensor C3042-3, circuit 9-JA52 (BN/GN), harness side and ground.
- Are the voltages less than 0.2 volt?
Yes : GO to AR12.
No : REPAIR circuit 7-JA52 (YE/GN), circuit 8-JA52 (WH/GN) or circuit 9-JA52 (BN/GN). GO to AR28.
- AR12 CHECK CIRCUITS 7-JA52 (YE/GN), 8-JA52 (WH/GN) AND 9-JA52 (BN/GN) FOR A SHORT TO GROUND - PRODUCTION OCS SYSTEM
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Measure the resistance between OCS pressure sensor C3042-1, circuit 7-JA52 (YE/GN), harness side and ground; between OCS pressure sensor C3042-2, circuit 8-JA52 (WH/GN), harness side and ground; and between OCS pressure sensor C3042-3, circuit 9-JA52 (BN/GN), harness side and ground.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to AR13.
No : REPAIR circuit 7-JA52 (YE/GN), circuit 8-JA52 (WH/GN) or circuit 9-JA52 (BN/GN). GO to AR28.
- AR13 CHECK CIRCUIT 7-JA52 (YE/GN) FOR AN OPEN BETWEEN THE OCS ECU AND THE PRESSURE SENSOR - PRODUCTION OCS SYSTEM
- Measure the resistance between OCS ECU C3043-3, circuit 7-JA52 (YE/GN), harness side and OCS pressure sensor C3042-1, circuit 7-JA52 (YE/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR14.
No : REPAIR circuit 7-JA52 (YE/GN). GO to AR28.
- AR14 CHECK CIRCUIT 9-JA52 (BN/GN) FOR AN OPEN BETWEEN THE OCS ECU AND THE PRESSURE SENSOR - PRODUCTION OCS SYSTEM
- Measure the resistance between OCS ECU C3043-5, circuit 9-JA52 (BN/GN), harness side and OCS pressure sensor C3042-3, circuit 9-JA52 (BN/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR15.
No : REPAIR circuit 9-JA52 (BN/GN). GO to AR28.
- AR15 CHECK CIRCUIT 8-JA52 (WH/GN) FOR AN OPEN BETWEEN THE OCS ECU AND THE PRESSURE SENSOR - PRODUCTION OCS SYSTEM
- Measure the resistance between OCS ECU C3043-4, circuit 8-JA52 (WH/GN), harness side and OCS pressure sensor C3042-2, circuit 8-JA52 (WH/GN), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR16.
No : REPAIR circuit 8-JA52 (WH/GN). GO to AR28.
- AR16 CHECK CIRCUITS 7-JA52 (YE/GN), 8-JA52 (WH/GN) AND 9-JA52 (BN/GN) FOR A SHORT - PRODUCTION OCS SYSTEM
- Measure the resistance between OCS pressure sensor:
- C3042-1, circuit 7-JA52 (YE/GN), harness side and C3042-2, circuit 8-JA52 (WH/GN), harness side.
- C3042-1, circuit 7-JA52 (YE/GN), harness side and C3042-3, circuit 9-JA52 (BN/GN), harness side.
- C3042-2, circuit 8-JA52 (WH/GN), harness side and C3042-3, circuit 9-JA52 (BN/GN), harness side.
- Are the resistances greater than 1,000,000 ohms?
Yes : GO to AR17.
No : REPAIR circuit 7-JA52 (YE/GN), circuit 8-JA52 (WH/GN) or circuit 9-JA52 (BN/GN). GO to AR28.
- Measure the resistance between OCS pressure sensor:
- AR17 CHECK THE OCS SYSTEM - PRODUCTION OCS SYSTEM NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded.
- Install a known good OCS system service kit. Refer to OCCUPANT CLASSIFICATION SENSOR in this article.
- Connect: RCM C2041a and C2041b.
- 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 scan tool: OCS Rezeroing.CAUTION: It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, or an OCS service kit is installed. A diagnostic tool is used to trigger the active command to carry out rezeroing of the OCS system.CAUTION: Make sure the seat is completely assembled before rezeroing.CAUTION: The following precautions must be taken before rezeroing of the OCS system:
- Make sure the OCS system components are connected and no faults are present.
- Make sure the OCS system is not at a temperature below 0°C (32°F) or above 45°C (113°F) when initiating the rezeroing process. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 0 C to 45°C (32°F to 113°F) for a minimum of 30 minutes.
- Make sure nothing is present on the passenger seat before rezeroing and nothing is placed on the seat during the rezeroing process.
- Make sure a minimum 8-second time period has passed after cycling the ignition switch ON before the rezeroing process.
NOTE: For best results in rezeroing, the OCS system should be at or near room temperature, 10°C to 29°C (50°F to 85°F).NOTE: If the first attempt to rezero the OCS system is unsuccessful, a second attempt must be made. - Using the diagnostic tool, carry out rezeroing of the OCS system.
- Key in OFF position.NOTE: The ignition switch must be cycled after rezeroing the OCS system.
- Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
INSTALL and CONFIGURE a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) in this article. GO to AR28.
No : Fault corrected. GO to AR28.
- AR18 CHECK THE SEAT WIRING AND CONNECTORS - OCS SERVICE KIT
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Carry out a thorough visual inspection of the OCS system wiring, terminals and connectors, and the related seat wiring harness and body wiring harness terminals and connectors.
- Were any problems noted?
Yes : REPAIR the connectors and wiring as needed. GO to AR28.
No : GO to AR19.
- AR19 CHECK IGNITION CIRCUIT 15-JA60 (GN/WH) FOR AN OPEN OCS SERVICE KIT
- Disconnect: RCM C2041a and C2041b.
- Disconnect: Passenger Seat C312.
- Repower the system. Do not prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Key in ON position.
- Measure the voltage between passenger seat C312d-8, circuit 15-JA60 (GN/WH), harness side and ground.
- Is the voltage greater than 10 volts?
Yes : GO to AR20.
No : VERIFY central junction box (CJB) fuse 51 (7.5A) is OK. If OK, REPAIR circuit 15-JA60 (GN/WH). GO to AR28.
- AR20 CHECK GROUND CIRCUIT 91-JA60 (BK/WH) FOR AN OPEN - OCS SERVICE KIT
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Measure the resistance between passenger seat C312d-7, circuit 91-JA60 (BK/WH), harness side and ground.
- Is the resistance less than 5 ohms?
Yes : GO to AR21.
No : REPAIR circuit 91-JA60 (BK/WH). GO to AR28.
- AR21 CHECK CIRCUIT 4-EC18 (GY/BK)/4-EC7 (GY/RD) FOR AN OPEN BETWEEN THE OCS AND THE RCM - OCS SERVICE KIT
- Measure the resistance between RCM C2041b-19, circuit 4-EC18 (GY/BK), harness side and passenger seat C312c-6, circuit 4-EC7 (GY/RD), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR22.
No : REPAIR circuit 4-EC18 (GY/BK) or circuit 4-EC7 (GY/RD). GO to AR28.
- AR22 CHECK CIRCUIT 5-EC18 (BU/BK)/5-EC7 (BU/RD) FOR AN OPEN BETWEEN THE OCS AND THE RCM - OCS SERVICE KIT
- Measure the resistance between RCM C2041b-20, circuit 5-EC18 (BU/BK), harness side and passenger seat C312c-5, circuit 5-EC7 (BU/RD), harness side.
- Is the resistance less than 0.5 ohm?
Yes : GO to AR23.
No : REPAIR circuit 5-EC18 (BU/BK) or circuit 5-EC7 (BU/RD). GO to AR28.
- AR23 CHECK THE RCM - OCS SERVICE KIT NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded.
- Install a known good RCM. Refer to RESTRAINTS CONTROL MODULE (RCM) in this article.
- Connect: RCM C2041a and C2041b.
- Connect: Passenger Seat C312.
- 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 scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
INSTALL a new OCS service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
No : Fault corrected. GO to AR28.
- AR24 CHECK OCS PART NUMBER
- Key in OFF position.
- Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in this article.
- Check the part number on the OCS against the part number listed in the master parts catalog.
- Did the part number on the OCS match the part number listed in the master parts catalog?
Yes : GO to AR25.
No : INSTALL a new OCS with the correct part number. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
- AR25 CHECK RCM PART NUMBER
- Check the part number on the RCM against the part number listed in the master parts catalog.
- Did the part number on the RCM match the part number listed in the master parts catalog?
Yes : GO to AR26.
No : INSTALL and CONFIGURE a new RCM with the correct part number. REFER to RESTRAINTS CONTROL MODULE (RCM) in this article. GO to AR28.
- AR26 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.
- 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 scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was the DTC B2290 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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
INSTALL and CONFIGURE a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) in this article. GO to AR28.
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. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. GO to AR28.
- AR27 CHECK FOR AN INTERMITTENT FAULT
- Key in OFF position.
- Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
- Enter the following diagnostic mode on the scan tool: Flag DTC B2290/Record All Faults.
- Was DTC B2290 retrieved during the on-demand self test?
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.
If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.
Vehicles with a production OCS system
For OCS system with a module version status-RCM version conflicts with OCS version, GO to AR24.
For OCS system with a mounting fault, GO to AR2.
For OCS system with an internal fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
For OCS system with a communications fault, GO to AR3.
For OCS system with a calibration fault, GO to AR9.
For OCS system with a pressure sensor fault, GO to AR10.
Vehicles with a service OCS system
For OCS system with a module version status-RCM version conflicts with OCS version, GO to AR24.
For OCS system with a mounting fault, GO to AR2.
For OCS system with an internal fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
For OCS system with a communications fault, GO to AR18.
For OCS system with a calibration fault, GO to AR9.
For OCS system with a pressure sensor fault, INSTALL a new OCS system service kit. REFER to OCCUPANT CLASSIFICATION SENSOR in this article. GO to AR28.
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. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. GO to AR28.
- AR28 CHECK FOR ADDITIONAL DTCs
- Refer to the continuous DTCs recorded during Step AR1.
- Were any continuous DTCs retrieved during Step AR1?
Yes : Do not clear any DTCs until all DTCs have been resolved. GO to the DIAGNOSTIC TROUBLE CODES (DTCS) 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.