Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2006 >> Crown Victoria V8-4.6L VIN W >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Pinpoint Tests >> Test L: Temperature Control Is Inoperative/Does Not Operate Correctly - Manual Climate Control
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 L: Temperature Control Is Inoperative/Does Not Operate Correctly - Manual Climate Control

PINPOINT TEST L: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - MANUAL CLIMATE CONTROL


L1:






L1-L3:






L4-L5:






L6-L7:






L8-L10:






L10-L11:






Normal Operation
Under normal operation, the temperature blend door actuator is supplied voltage on circuit 248 (VT)/1040 (RD/BK) and ground on circuit 57 (BK). As the temperature selection changes it varies the voltage on circuit 437 (YE/LG) to the temperature blend door actuator. The temperature control potentiometer receives reference voltage from the temperature blend door actuator through circuit 436 (RD/LG). Ground for the temperature control potentiometer is supplied from the temperature blend door actuator through circuit 600 (DB).

Possible Causes
- Fuse
- An open, short to voltage, ground or together in circuits 57 (BK), 248 (VT)/1040 (RD/BK), 436 (RD/LG), 437 (YE/LG) or 600 (DB)
- Temperature blend door actuator
- Temperature control potentiometer
- Stuck or bound linkage or door
pro multis · About Operation CHARM