Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2003 >> Explorer AWD V8-4.6L VIN W >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test W
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Test W

PINPOINT TEST W: THE TEMPERATURE CONTROL IS INOPERATIVE USING THE FRONT AUXILIARY CLIMATE CONTROLS


Test W1-W2:






Test W3-W4:






Normal Operation
Under normal operation, the auxiliary temperature blend door actuator motor is supplied voltage by circuit 1003 (GY/YE) and ground by circuit 1205 (BK). A signal voltage is received by the auxiliary temperature blend door actuator motor from the front auxiliary temperature control through circuit 1125 (BN).

Possible Causes
- An open, short to voltage, ground or together in circuits 1205 (BK), 1003 (GY/YE) or 1125 (BN).
- Front auxiliary climate control assembly.
- Auxiliary temperature blend door actuator motor.
- Broken/binding auxiliary temperature blend door.
pro multis · About Operation CHARM