PINPOINT TEST L: DTCs B0090:11 OR B0090:93

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

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 and cause serious personal injury or death.

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

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough INSPECTION AND VERIFICATION before proceeding with the pinpoint test.

NOTE: Only disconnect or reconnect Supplemental Restraint System (SRS) components 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.

NOTE: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs may set.

NOTE: Do not probe any impact sensor. The impact sensor cannot be tested using a multi-meter.

L1 RETRIEVE RCM DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Was DTC B0090:11 or B0090:93 retrieved on-demand during self-test?
1. Yes : This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test.
  For DTC B0090:11, GO to L2 .
  
  For DTC B0090:93, GO to L5.
2. No : The fault is intermittent when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to L10.
L2 CHECK THE LEFT FRONTAL RESTRAINTS SENSOR DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)
NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: LH Front Impact Severity Sensor C1465 .
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Did the on-demand DTC change from B0090:11 to B0090:93?
1. Yes : INSTALL a new LH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to L11.
2. No : GO to L3 .
L3 CHECK THE LH FRONT IMPACT SEVERITY SENSOR FEED CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: RCM C310A and C310B.
- Measure the resistance between LH front impact severity sensor C1465-1 , circuit VR213 (VT/GN), harness side and ground.
  
  Fig 1: Measuring Resistance Between LH Front Impact Severity Sensor C1465-1, Circuit VR213 (VT/GN) And Ground
  Courtesy of FORD MOTOR CO.
Is the resistance greater than 10, 000 ohms?
1. Yes : GO to L4 .
2. No : REPAIR circuit VR213 (VT/GN).
  Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
  
  GO to L11.
L4 CHECK FOR A SHORT BETWEEN LH FRONT IMPACT SEVERITY SENSOR CIRCUITS
- Measure the resistance between LH front impact severity sensor C1465-1 , circuit VR213 (VT/GN), harness side and C1465-2 , circuit RR129 (YE/GY), harness side.
  
  Fig 2: Measuring Resistance Between LH Front Impact Severity Sensor C1465-1, Circuit VR213 (VT/GN) And C1465-2, Circuit RR129 (YE/GY)
  Courtesy of FORD MOTOR CO.
Is the resistance greater than 10, 000 ohms?
1. Yes : GO to L9.
2. No : REPAIR circuits VR213 (VT/GN) and RR129 (YE/GY).
  Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
  
  GO to L11.
L5 CHECK THE LH FRONT IMPACT SEVERITY SENSOR AND RCM CONNECTIONS (NO OPERATION INDICATED)
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Inspect LH front impact severity sensor C1465 to be fully seated and locked. Seat and lock connector as necessary.
- Gain access to the RCM and inspect C310A and C310B to be fully seated and locked. Seat and lock the connector(s) as necessary. Refer to RESTRAINTS CONTROL MODULE (RCM) .
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Was DTC B0090:93 retrieved on-demand during self-test?
1. Yes : GO to L6 .
2. No : Fault corrected. GO to L11.
L6 CHECK THE LH FRONT IMPACT SEVERITY SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: LH Front Impact Severity Sensor C1465 .
- Disconnect: RCM C310A and C310B.
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Measure the voltage between LH front impact severity sensor:
  - C1465-1 , circuit VR213 (VT/GN), harness side and ground.
    
    Fig 3: Measuring Voltage Between LH Front Impact Severity Sensor
    Courtesy of FORD MOTOR CO.
Is any voltage present?
1. Yes : REPAIR circuit VR213 (VT/GN).
  Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
  
  GO to L11.
2. No : GO to L7 .

L7 CHECK THE LH FRONT IMPACT SEVERITY SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

Ignition OFF.
Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .

Measure the resistance between RCM C310B, harness side and LH front impact severity sensor C1465, harness side using the following chart.

RCM	Circuit	LH Front Impact Severity Sensor
C310B-27	VR213 (VT/GN)	C1465-1
C310B-28	RR129 (YE/GY)	C1465-2

Fig 4: Measuring Resistance Between RCM C310B And LH Front Impact Severity Sensor C1465

Courtesy of FORD MOTOR CO.

Are the resistances less than 0.5 ohm?

Yes : GO to L8 .
No : REPAIR circuit VR213 (VT/GN) or RR129 (YE/GY).
Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

GO to L11.

L8 CHECK THE LEFT FRONTAL RESTRAINTS SENSOR DTC FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)
NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
- Connect: RCM C310A and C310B.
- Connect a fused jumper wire between LH front impact severity sensor C1465-1 , circuit VR213 (WH/BU), harness side and C1465-2 , circuit RR129 (GN/BU), harness side.
  
  Fig 5: Connecting Fused Jumper Wire Between LH Front Impact Severity Sensor C1465-1, Circuit VR213 (WH/BU) And C1465-2, Circuit RR129 (GN/BU)
  Courtesy of FORD MOTOR CO.
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Did the on-demand DTC change from B0090:93 to B0090:11?
1. Yes : REMOVE the fused jumper wire and INSTALL a new LH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to L11.
2. No : REMOVE the fused jumper wire and GO to L9 .
L9 CONFIRM THE RCM FAULT
NOTE: Make sure all restraint system components and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs will be recorded.
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Prior to reconnecting any previously disconnected SRS component:
  - inspect connector(s) (including any in-line connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
  - inspect wire harness for any damage, pinched, cut or pierced wires.
  - inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM) .
  - repair any concerns found.
    Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
- Connect: RCM C310A and C310B.
- Connect: LH Front Impact Severity Sensor C1465.
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Was the original DTC retrieved on-demand during self-test?
1. Yes : INSTALL a new RCM . REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to L11.
2. No : In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test . GO to L10 .
L10 CHECK FOR AN INTERMITTENT FAULT
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect: LH Front Impact Severity Sensor C1465 .
- Disconnect: RCM C310A and C310B.
- Inspect for the following:
  - inspect harness and component connectors for loose or spread terminals and loose or frayed wire connections at terminals.
  - inspect wire harness for any damage, pinched, cut or pierced wires.
  - inspect RCM C310A and C310B CPA lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM) .
  - repair any concerns found.
    Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.
- Connect: All Previously Disconnected Component(s)/Connector(s).
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
Was DTC B0090:11 or B0090:93 retrieved on-demand during self-test?
1. Yes : This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test.
  For DTC B0090:11, GO to L2.
  
  For DTC B0090:93, GO to L5.
2. No : The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test . GO to L11 .
L11 CHECK FOR ADDITIONAL SRS DTCs
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Reconnect all SRS components (if previously disconnected).
- If previously directed to depower the SRS , repower the SRS . Do not prove out the SRS at this time. Refer to 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 are retrieved from the RCM and OCSM .
Are any RCM and/or OCSM DTCs retrieved on-demand during self-test?
1. Yes : Do not clear any DTCs until all DTCs have been resolved. GO to the DTC CHARTS for pinpoint test direction.
2. No : CLEAR all RCM and OCSM CMDTCs . PROVE OUT the SRS . The repair is complete. RETURN the vehicle to the customer.