MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Body & Paint

Pinpoint Test - DTC: AK

501-20B Supplemental Restraint System

2016 MustangReference 2,046 / 6,619HTML edition
← Chapter contentsProcedure contents

A5 CHECK THE BELT TENSION SENSOR (BTS) SIGNAL CIRCUIT 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 Passenger Side Airbag (Inline) C219. Disconnect Passenger Safety Belt Buckle C3238. Disconnect OCSM C3043. 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

C3043-6

Ground

Is any voltage present?

A6 CHECK THE BELT TENSION SENSOR (BTS) GROUND CIRCUIT FOR AN OPEN

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

C3238-3

Ground

Is the resistance less than 3 ohms?

A7 CHECK THE BELT TENSION SENSOR (BTS)

NOTE: This pinpoint test step will attempt to change the fault reported by the OCSM by inducing a different fault condition. If the fault reported changes, this indicates the OCSM 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). Disconnect Passenger Side Airbag (Inline) C219. Disconnect Passenger Safety Belt Buckle C3238. Connect a fused jumper wire:

Click to display connectors

Lead 1

Measurement / Action

Lead 2

C3238-1

C3238-3

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 OCSM self-test. DIAGNOSTIC TIP: When viewing Diagnostic Trouble Codes (DTCs) with the Belt Tension Sensor (BTS) circuits shorted together, a short to ground fault is normally retrieved. The Belt Tension Sensor (BTS) shares a connector with the passenger safety belt buckle switch, and a passenger safety belt buckle switch circuit fault will also be present in the RCM.

Did the on-demand DTC change from B0061:13 to B0061:11?

Yes

INSTALL a new front passenger safety belt buckle. REFER to: Front Seatbelt Buckle (501-20A Seatbelt Systems, Removal and Installation). GO to A13

Source reference 2046

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.