MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Body & Paint

Pinpoint Test - DTC: A

501-20B Supplemental Restraint System

2016 MustangReference 1,776 / 6,619HTML edition
← Chapter contentsProcedure contents

Disconnect Clockspring C218A. Connect a fused jumper wire:

Click to display connectors

Lead 1

Measurement / Action

Lead 2

C218A-11

C218A-12

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 driver airbag stage 1 circuits shorted together, a low resistance fault is normally retrieved on stage 1. Stage 2 shows an open circuit fault because the clockspring is disconnected.

Was DTC B0001:1A retrieved on-demand during self-test?

Yes

REMOVE the fused jumper wire and GO to A18

No

REMOVE the fused jumper wire and GO to A19

A12 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) 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 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). 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 driver airbag disconnected, open circuit faults are normally retrieved on stages 1 and 2.

Did the on-demand DTC change from B0001:11 to B0001:13?

Yes

GO to A17

No

GO to A13

A13 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (SHORT TO GROUND 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. 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). 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 B0001:11 to B0001:13?

Yes

GO to A18

No

GO to A14

A14 CHECK THE DRIVER AIRBAG STAGE 1 CIRCUITS FOR A SHORT TO GROUND

Ignition OFF. Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect RCM C310A and C310B. Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C218A-11

Ground

C218A-12

Ground

Source reference 1776

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.