Is the resistance less than 3 ohms?
Yes | GO to K6 | |
|---|---|---|
No | REPAIR the circuit. | |
K6 CHECK THE BLOWER MOTOR SPEED CONTROL VOLTAGE CIRCUIT
Disconnect Blower motor speed control C297. Connect Blower motor relay. Connect FCIM C2402A. Ignition ON. Select PANEL on the HVAC controls. Select the highest blower motor setting. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C297-5 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to K7 | |
|---|---|---|
No | REPAIR the circuit. | |
K7 CHECK THE BLOWER MOTOR SPEED CONTROL GROUND CIRCUIT FOR AN OPEN
Ignition OFF. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C297-1 | Ground |
Is the resistance less than 3 ohms?
Yes | GO to K8 | |
|---|---|---|
No | REPAIR the circuit. | |
K8 CHECK THE BLOWER MOTOR CONTROL PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO VOLTAGE
Ignition ON. Disconnect FCIM C2402A. Measure:
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.