Did the relay pass the component test?
Yes | GO to J2 | |
|---|---|---|
No | INSTALL a new blower motor relay. | |
J2 CHECK THE BLOWER MOTOR RELAY SWITCH CONTACT SUPPLY VOLTAGE
Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
Blower motor relay socket 3 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to J3 | |
|---|---|---|
No | VERIFY BJB fuse 10 (40A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. | |
J3 CHECK THE BLOWER MOTOR RELAY COIL GROUND CIRCUIT FOR AN OPEN
Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
Blower motor relay socket 1 | Ground |
Is the resistance less than 3 ohms?
Yes | GO to J4 | |
|---|---|---|
No | REPAIR the circuit. | |
J4 CHECK THE BLOWER MOTOR RELAY COIL CONTROL CIRCUIT FOR A SHORT TO GROUND
Disconnect FCIM C2402A. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
Blower motor relay socket 2 | Ground |
Is the resistance greater than 10,000 ohms?
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.