Pinpoint Tests
PINPOINT TEST A: DTC B1249 — BLEND DOOR FAILURE OR SHORT
Temperature blend door
binding/stuck.
The blower motor does not operate—
manual climate control
Open fuse.
Circuit open/short.
Blower motor (19805).
Function selector switch (19B888).
Blower motor relay (14B192).
GO to Pinpoint Test N
.
The blower motor is inoperative—EATC
Open fuse.
Circuit open/short.
Blower motor.
Blower motor speed control
(19E624).
Blower motor relay.
Remote climate control module.
GO to Pinpoint Test O
.
The blower motor does not operate
correctly—manual climate control
Circuit open/short.
Blower motor.
Blower motor switch (18578).
Blower motor resistor (19A706).
GO to Pinpoint Test P
.
The blower motor operates continuously
in high speed—manual climate control
Circuit short.
Blower motor resistor.
Blower motor switch.
GO to Pinpoint Test Q
.
The blower motor operates continuously
in high speed—EATC
Circuit open/short.
Blower motor speed control.
Remote climate control module.
GO to Pinpoint Test R
.
No operation in high blower setting—
manual climate control
Circuit open.
Blower motor switch.
Blower motor.
GO to Pinpoint Test S
.
No operation in lower speeds—manual
climate control
Circuit open.
Blower motor resistor.
GO to Pinpoint Test T
.
No operation in some blower settings—
EATC
Blower motor speed control.
Remote climate control module.
GO to Pinpoint Test U
.
The temperature set point does not
repeat after turning the ignition switch
off—EATC
Open fuse.
Circuit open.
Remote climate control module.
REPAIR circuit 385 (WH/RD) or circuit 729 (RD/WH) for an open. If
okay, INSTALL a new remote climate control module.
The temperature display will not switch
between Celsius and Fahrenheit—EATC
Integrated control panel (ICP)
(18C864).
Remote climate control module.
VERIFY correct front defrost and MAX A/C operation. If operation is
correct, INSTALL a new remote climate control module. If operation
is not correct, INSTALL a new ICP.
Test Step
Result / Action to Take
A1 CHECK THE BLEND DOOR ACTUATOR CLOCKWISE OPERATION
Disconnect: Remote Climate Control Module C228.
Ignition ON.
Connect a fused jumper wire between RCC module C228 pin 21, circuit 249 (DB/LG) and RCC module C228 pin
11, circuit 729 (RD/WH). Connect a second fused jumper wire between RCC module C228 pin 22, circuit 250
(OG) and RCC module C228 pin 8, circuit 570 (BK/YE).
Does the actuator motor move in the clockwise direction?
Yes
GO to
A2
.
No
GO to
A3
.
A2 CHECK THE BLEND DOOR ACTUATOR COUNTERCLOCKWISE OPERATION
Connect a fused jumper wire between RCC module C228 pin 22, circuit 250 (OG) and RCC module C228 pin
11, circuit 729 (RD/WH). Connect a second fused jumper wire between RCC module C228 pin 21, circuit 249
(DB/LG) and RCC module C228 pin 8, circuit 570 (BK/YE).
Does the air bypass door actuator motor move in the closed direction?
Yes
GO to
A9
.
No
GO to
A3
.
A3 CHECK THE ACTUATOR CLOCKWISE OPERATION
Remove the door actuator and disengage the actuator drive shaft from the actuator door. Refer to
Section 412-
04
.
Yes
INSPECT for binding or broken door or linkage. If no
Page 8 of 47
2003 Taurus/Sable Workshop Manual
11/22/2011
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3H/~MUS~LEN/19/...
