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Home >> Ford >> 2009 >> Edge AWD V6-3.5L >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test F: DTC B2290 >> F21-F37
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F21-F37




Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)

Pinpoint Tests

Pinpoint Test F: DTC B2290

Refer to Wiring Diagram Set 46, Supplemental Restraint System for schematic and connector information. Diagrams By Number

NOTE: DTC B2290 reported by the Restraints Control Module (RCM) is informational only and indicates the presence of a fault in the Occupant Classification System Module (OCSM).

NOTE: The following pinpoint test must only be used to diagnose DTC B2290 when reported by the OCSM.

Normal Operation

The Occupant Classification Sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact.

The OCSM monitors the 4 OCS weight sensor bolts and circuitry for faults. If the OCSM detects a fault with the sensor(s) or circuitry, it will store DTC B2290 in memory and send a message to the RCM. The RCM will store DTC B2290 in memory and send a message to the Instrument Cluster (IC) module to illuminate the air bag warning indicator.





a Fault PIDs that end in OD indicate an on-demand status and are associated with on-demand DTC B2290. Fault PIDs that end in CM indicate continuous memory status and are associated with continuous DTC B2290.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- OCS system component



PINPOINT TEST F: DTC B2290

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(R) and cause serious personal injury or death.

WARNING: Never probe the electrical connectors on air bag, Safety Canopy(R) or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: Supplemental Restraint System (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: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

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F21 CHECK OCS WEIGHT SENSOR BOLT "3" SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE


- Disconnect: Passenger Seat Side Air Bag Module C327.
- Repower the SRS. Do not prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Ignition ON.
- Measure the voltage between OCS weight sensor bolt "3" C3330-3, circuit VR226 (YE/GY), harness side and ground.




- Is any voltage present?

Yes
REPAIR circuit VR226 (YE/GY). GO to F37.

No
GO to F22.

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F22 CHECK OCS WEIGHT SENSOR BOLT "3" SIGNAL CIRCUIT FOR A SHORT TO GROUND


- Ignition OFF.
- Measure the resistance between OCS weight sensor bolt "3" C3330-3, circuit VR226 (YE/GY), harness side and ground.




- Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new OCS weight sensor bolt "3". REFER to Occupant Classification Sensor - Manual Seat Track Occupant Classification Sensor - Manual Seat Track or Occupant Classification Sensor - Power Seat Track Occupant Classification Sensor - Power Seat Track. GO to F37.

No
REPAIR circuit VR226 (YE/GY). GO to F37.

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F23 CHECK CIRCUIT VR226 (YE/GY) FOR A SHORT TO GROUND AND A SHORT TO CIRCUIT RR153 (GY/BU)


- Disconnect: OCS Weight Sensor Bolt "3" C3330.
- Disconnect: OCSM C3159.
- Measure the resistance between:
- OCS weight sensor bolt "3" C3330-3, circuit VR226 (YE/GY), harness side and ground.
- OCS weight sensor bolt "3" C3330-3, circuit VR226 (YE/GY), harness side and C3291-2, circuit RR153 (GY/BU), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to F24.

No
REPAIR circuits VR226 (YE/GY) and/or RR153 (GY/BU). GO to F37.

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F24 CHECK OCS WEIGHT SENSOR BOLT "3" RETURN CIRCUIT FOR AN OPEN


- Measure the resistance between OCS weight sensor bolt "3" C3330-1, circuit CR153 (GN/WH), harness side and OCSM C3159-8, circuit CR153 (GN/WH), harness side.




- Is the resistances less than 5 ohms?

Yes
GO to F35.

No
REPAIR circuit CR153 (GN/WH). GO to F37.

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F25 CHECK OCS WEIGHT SENSOR BOLT "3" RETURN CIRCUIT FOR AN OPEN


- Disconnect: OCS Weight Sensor Bolt "3" C3330.
- Measure the resistance between OCS weight sensor bolt "3" C3330-2, circuit RR153 (GY/BU), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to F26.

No
REPAIR circuit RR153 (GY/BU). GO to F37.

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F26 CHECK OCS WEIGHT SENSOR BOLT "3" SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE


- Disconnect: Passenger Seat Side Air Bag Module C327.
- Disconnect: OCSM C3159.
- Repower the SRS. Do not prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Ignition ON.
- Measure the voltage between OCS weight sensor bolt "3" C3330-3, circuit VR226 (YE/GY), harness side and ground.




- Is any voltage present?

Yes
REPAIR circuit VR226 (YE/GY). GO to F37.

No
GO to F35.

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F27 CHECK OCS WEIGHT SENSOR BOLT "4" CIRCUITS FOR AN OPEN


- Disconnect: OCSM C3159.
- Disconnect: OCS Weight Sensor Bolt "4" C3331.
- Measure the resistance between OCSM C3159, harness side and OCS sensor 4 C3331, harness side using the following chart.









- Are the resistances less than 5 ohms?

Yes
GO to F28.

No
REPAIR circuit CR154 (VT/OG), circuit VR227 (VT/GN) or circuit RR154 (VT/WH). GO to F37.

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F28 CHECK FOR A SHORT BETWEEN OCS WEIGHT SENSOR BOLT "4" CIRCUITS


- Measure the resistance between OCS weight sensor bolt "4":
- C3331-1, circuit CR154 (VT/OG), harness side and C3331-3, circuit VR227 (VT/GN), harness side.
- C3331-1, circuit CR154 (VT/OG), harness side and C3331-2, circuit RR154 (VT/WH), harness side.
- C3331-3, circuit VR227 (VT/GN), harness side and C3331-2, circuit RR154 (VT/WH), harness side.




- Are the resistances greater than 10,000 ohms?

Yes
GO to F29.

No
REPAIR circuits CR154 (VT/OG), VR227 (VT/GN) and/or RR154 (VT/WH). GO to F37.

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F29 CHECK OCS WEIGHT SENSOR BOLT "4" SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE


- Disconnect: Passenger Seat Side Air Bag Module C327.
- Repower the SRS. Do not prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Ignition ON.
- Measure the voltage between OCS weight sensor bolt "4" C3331-3, circuit VR227 (VT/GN), harness side and ground.




- Is any voltage present?

Yes
REPAIR circuit VR227 (VT/GN). GO to F37.

No
GO to F30.

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F30 CHECK OCS WEIGHT SENSOR BOLT "4" SIGNAL CIRCUIT FOR A SHORT TO GROUND


- Ignition OFF.
- Measure the resistance between OCS weight sensor bolt "4" C3331-3, circuit VR227 (VT/GN), harness side and ground.




- Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new OCS weight sensor bolt "4". REFER to Occupant Classification Sensor - Manual Seat Track Occupant Classification Sensor - Manual Seat Track or
Occupant Classification Sensor - Power Seat Track Occupant Classification Sensor - Power Seat Track. GO to F37.

No
REPAIR circuit VR227 (VT/GN). GO to F37.

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F31 CHECK CIRCUIT VR227 (VT/GN) FOR A SHORT TO GROUND AND A SHORT TO CIRCUIT RR154 (VT/WH)


- Disconnect: OCSM C3159.
- Disconnect: OCS Weight Sensor Bolt "4" C3331.
- Measure the resistance between:
- C3331-3, circuit VR227 (VT/GN), harness side and C3331-2, circuit RR154 (VT/WH), harness side.
- OCS weight sensor bolt "4" C3331-3, circuit VR227 (VT/GN), harness side and ground.




- Are the resistances greater than 10,000 ohms?

Yes
GO to F32.

No
REPAIR circuits VR227 (VT/GN) and/or RR154 (VT/WH). GO to F37.

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F32 CHECK OCS WEIGHT SENSOR BOLT "4" VREF CIRCUIT FOR AN OPEN


- Measure the resistance between OCS weight sensor bolt "4" C3331-1, circuit CR154 (VT/OG), harness side and OCSM C3159-17, circuit CR154 (VT/OG), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to F35.

No
REPAIR circuit CR154 (VT/OG). GO to F37.

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F33 CHECK OCS WEIGHT SENSOR BOLT "4" RETURN CIRCUIT FOR AN OPEN


- Disconnect: OCS Weight Sensor Bolt "4" C3331.
- Measure the resistance between OCS weight sensor bolt "4" C3331-2, circuit RR154 (VT/WH), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to F34.

No
REPAIR circuit RR154 (VT/WH). GO to F37.

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F34 CHECK OCS WEIGHT SENSOR BOLT "4" SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE


- Disconnect: Passenger Seat Side Air Bag Module C327.
- Disconnect: OCSM C3159.
- Repower the SRS. Do not prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Ignition ON.
- Measure the voltage between OCS weight sensor bolt "4" C3331-3, circuit VR227 (VT/GN), harness side and ground.




- Is any voltage present?

Yes
REPAIR circuit VR227 (VT/GN). GO to F37.

No
GO to F35.

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F35 CONFIRM THE OCS MODULE FAULT


NOTE: Make sure all restraint system sensor electrical connectors and the RCM electrical connector are connected before carrying out the on-demand self test. If not, DTCs will be recorded.

- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Connect: OCSM C3159 (if previously disconnected).
- Connect: Affected OCS Weight Sensor Bolt Electrical Connector(s).
- Repower the SRS. Do not prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Enter the following diagnostic mode on the scan tool: Self Test - OCSM.
- Enter the following diagnostic mode on the scan tool: DataLogger - OCSM - View and Record All 2290 Fault PIDs.
- Refer to PID list in Normal Operation to view 2290 fault PIDs.
- Does the original on-demand 2290 fault PID indicate a fault?

Yes
INSTALL a new OCSM. REFER to Occupant Classification System Module (OCSM) - Manual Seat Track Occupant Classification System Module (OCSM) - Manual Seat Track or
Occupant Classification System Module (OCSM) - Power Seat Track Occupant Classification System Module (OCSM) - Power Seat Track. GO to F37.

No
In the process of diagnosing the fault, the fault condition has become intermittent. 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. GO to F36.

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F36 CHECK FOR AN INTERMITTENT FAULT


- Enter the following diagnostic mode on the scan tool: Self Test - OCSM.
- Enter the following diagnostic mode on the scan tool: DataLogger - OCSM - View and Record All 2290 Fault PIDs.
- Refer to PID list in Normal Operation to view 2290 fault PIDs.
- Do any on-demand 2290 fault PIDs indicate a fault?

Yes
This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test.

Using the fault PIDs recorded, GO to the appropriate pinpoint test step.

For 2290_3_OD (Passenger Seat OCS Sensor No. 4 Internal Fault), 2290_7_OD (Passenger Seat OCS Sensor No. 3 Internal Fault), 2290_11_OD (Passenger Seat OCS
Sensor No.2 Internal Fault) or 2290_15_OD (Passenger Seat OCS Sensor No.1 Internal Fault), INSTALL a new OCS weight sensor bolt. REFER to Occupant Classification Sensor - Manual Seat Track Occupant Classification Sensor - Manual Seat Track or Occupant Classification Sensor - Power Seat Track Occupant Classification Sensor - Power Seat Track.

For 2290_14_OD (Passenger Seat OCS Sensor No.1 Comm. Fault/Open), GO to F3.

For 2290_13_OD (Passenger Seat OCS Sensor No.1 Circuit Short to Ground), GO to F7.

For 2290_12_OD (Passenger Seat OCS Sensor No.1 Circuit Short to Battery), GO to F9.

For 2290_10_OD (Passenger Seat OCS Sensor No.2 Comm. Fault / Open), GO to F11.

For 2290_9_OD (Passenger Seat OCS Sensor No.2 Circuit Short to Ground), GO to F15.

For 2290_8_OD (Passenger Seat OCS Sensor No.2 Circuit Short to Battery), GO to F17.

For 2290_6_OD (Passenger Seat OCS Sensor No. 3 Comm. Fault/Open), GO to F19.

For 2290_5_OD (Passenger Seat OCS Sensor No. 3 Circuit Short to Ground), GO to F23.

For 2290_4_OD (Passenger Seat OCS Sensor No. 3 Circuit Short to Battery), GO to F25.

For 2290_2_OD (Passenger Seat OCS Sensor No. 4 Comm. Fault/Open), GO to F27.

For 2290_1_OD (Passenger Seat OCS Sensor No. 4 Circuit Short to Ground), GO to F31.

For 2290_0_OD (Passenger Seat OCS Sensor No. 4 Circuit Short to Battery), GO to F33.

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. 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 F37.

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F37 CHECK FOR ADDITIONAL SRS DTCs


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.

- Ignition OFF.
- Reconnect all SRS components (if previously disconnected).
- If previously directed to depower the SRS, repower the SRS. Do notprove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering Supplemental Restraint System (SRS) Depowering and Repowering.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - Restraints.
- NOTE: When selecting Restraints from the Self Test menu, DTCs will be retrieved from the RCM and OCSM.
- Are any RCM and/or OCSM DTCs retrieved?

Yes
Do not clear any DTCs until all DTCs have been resolved. GO to the DTC Charts for pinpoint test direction. [1][2]Diagnostic Trouble Code Descriptions

No
CLEAR all RCM and OCSM CMDTCs. PROVE OUT the SRS. Repair is complete. RETURN the vehicle to the customer.

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