Blower Motor Speed Control Module C271
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
BLOWER MOTOR SPEED CONTROL MODULE C271 CIRCUIT REFERENCE
| Pin Number (s) | Circuit Designation/Description | Normal Condition/Measurement |
|---|---|---|
| 1 | CKT 261 (OG/BK) blower motor speed control module to blower motor | Greater than 10 volts with the EATC ON. |
| 2 | CKT 1205 (BK) blower motor speed control module ground | Resistance of 0 ohms to chassis ground. |
| 3 | CKT 1120 (BK/WH) EATC module to blower motor speed control module input | Less than 1 volt in the lowest blower setting to greater than 4.5 volts in the highest blower setting. |
| 4 | CKT 371 (PK/WH) voltage supply to blower motor speed control module | Greater than 10 volts with the EATC ON. |