MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Body & Paint

Pinpoint Test - DTC: A

501-20B Supplemental Restraint System

2016 MustangReference 1,777 / 6,619HTML edition
← Chapter contentsProcedure contents

Are the resistances greater than 10,000 ohms?

Yes

GO to A19

No

Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar. REPAIR the circuit(s). Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A24

A15 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (SHORT TO BATTERY INDICATED) (CLOCKSPRING DISCONNECTED)

NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault 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 (501-20B Supplemental Restraint System, General Procedures). Remove the driver airbag. REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation). Disconnect Clockspring C218A. Remove the steering column shrouds to access the clockspring connectors. REFER to: Steering Column Shrouds (501-05 Interior Trim and Ornamentation, Removal and Installation). Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures). Ignition ON. Using a diagnostic scan tool, perform RCM self-test. DIAGNOSTIC TIP: When viewing Diagnostic Trouble Codes (DTCs) with the clockspring disconnected, open circuit faults are normally retrieved on stages 1 and 2.

Did the on-demand DTC change from B0001:12 to B0001:13?

Yes

GO to A18

No

GO to A16

A16 CHECK THE DRIVER AIRBAG STAGE 1 CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF. Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect RCM C310A and C310B. Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures). Ignition ON. Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C218A-11

Ground

C218A-12

Ground

Is any voltage present?

Yes

Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar. REPAIR the circuit(s). Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A24

No

GO to A19

A17 CONFIRM THE DRIVER AIRBAG FAULT

NOTE: Make sure all SRS components and the RCM electrical connectors are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded. Ignition OFF. Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Prior to reconnecting any previously disconnected SRS component: inspect connector(s) (including any inline connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals. inspect wire harness for any damaged, pinched, cut or pierced wires. inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation. inspect Driver Airbag C216A and make sure the Connector Position Assurance (CPA) tabs are not broken and the clip is not damaged. repair any concerns found. Refer to Wiring Diagrams Cell 5 for schematic and connector information. Install the driver airbag. REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation). Repower the SRS. Do not prove out the SRS at this time.

Source reference 1777

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.