Operation CHARM: Car repair manuals for everyone.

Test F: The Blower Motor Is Inoperative

PINPOINT TEST F: THE BLOWER MOTOR IS INOPERATIVE

Normal Operation
Under normal operation, the function selector switch is supplied voltage through circuit CBP27 (GN/BN). When the function selector switch is any position except OFF, voltage is sent from the switch to the blower motor relay coil through circuit CH435 (VT/GY). Ground for the blower motor relay coil is provided through circuit GD121 (BK/YE). Voltage is supplied to the blower motor relay switch through circuit SBB13 (GY/RD). When the relay is energized, voltage is supplied to the blower motor through circuit CH402 (YE/GN). Ground for the blower motor is supplied by the blower motor resistor or blower switch through circuit CH430 (VT/OG).

This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- Blower motor
- Blower motor relay


F1-F3:






F3 Continued:






F3-F4:






F4 Continued:






F4-F5:






F5 Continued:






F5-F6: