Front Seats — 2016 workshop reference 1039

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

The SCME supplies voltage and ground to the driver seat cushion blower motor. The SCME also sends a speed control voltage signal to the blower motor to control blower speed.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	B19A3 Driver Seat Cushion Blower Speed Short to Battery	If the driver seat cushion blower speed circuit is shorted to voltage, the SCME shuts down the driver seat system and sets this DTC.

DTC

Description

Fault Trigger Conditions

B19A3 Driver Seat Cushion Blower Speed Short

to Battery

If the driver seat cushion blower speed circuit is shorted to voltage, the SCME shuts down the driver seat system and sets this DTC.

Possible Causes

Wiring, terminals or connectors Cushion blower motor SCME

PINPOINT TEST T : DTC B19A3

WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.

T1 CHECK CUSHION BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect: Driver Side Airbag In-line C345. Disconnect: Passenger Side Airbag In-line C219. Disconnect: SCME C3265C. Ignition ON. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C3265C-11		Ground

Is any voltage present?

Yes	GO to T2
No	GO to T3

T2 CHECK CUSHION BLOWER MOTOR SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE WITH THE CIRCUIT ISOLATED

Ignition OFF. Disconnect: Driver Seat Cushion Blower Motor C3035. Ignition ON. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C3265C-11		Ground

Is any voltage present?

Yes	REPAIR the circuit. GO to T6
No	GO to T3

T3 CHECK CUSHION BLOWER MOTOR SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR A SHORT TOGETHER

Ignition OFF. Disconnect: Driver Seat Cushion Blower Motor C3035. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C3265C-11		C3265C-16

Source reference 1039

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.