NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
K1 VERIFY THE BLOWER MOTOR OPERATION
Ignition ON. Select PANEL on the HVAC controls. Adjust the blower motor setting to the minimum and maximum settings.
Does the blower motor operate at any setting?
Yes | GO to K2 | |
|---|---|---|
No | GO to Pinpoint Test J | |
K2 CHECK THE BLOWER MOTOR CONTROL PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF. Disconnect Blower motor speed control C297. Ignition ON. Disconnect FCIM C2402A. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C2402A-23 | Ground |
Is any voltage present?
Yes | REPAIR the circuit. | |
|---|---|---|
No | GO to K3 | |
K3 CHECK THE BLOWER MOTOR CONTROL PWM (PULSE WIDTH MODULATION) CIRCUIT FOR A SHORT TO GROUND
Connect FCIM C2402A. Ignition OFF. Disconnect FCIM C2402A. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C2402A-23 | Ground |
Is the resistance greater than 10,000 ohms?
Yes | GO to K4 | |
|---|---|---|
No | REPAIR the circuit. | |
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.