PINPOINT TEST J: INSUFFICIENT, ERRATIC, OR NO HEAT — MANUAL CLIMATE CONTROL AND EATC
PINPOINT TEST K: THE A/C DOES NOT OPERATE/DOES NOT OPERATE CORRECTLY
NOTE:
Before carrying out the following test, diagnose any PCM DTCs.
NOTE:
Before carrying out the following test, make sure that the A/C system pressure is above 290 kPa (42 psi). If the pressure is below 290 kPa (42 psi), refer to
Fluorescent Dye Leak
Detection
in this section.
Does the air inlet door vacuum control motor operate and hold a vacuum?
I17 INSPECT THE AIR INLET DOOR LINKAGE AND MOVEMENT
Inspect the air inlet door linkage and verify correct movement of the door.
Is the air inlet door or air inlet door linkage broken, binding or otherwise
obstructed?
Yes
REPAIR the air inlet door or air inlet door linkage as needed. TEST the system for
correct operation.
No
INSTALL a new EATC module (19980). TEST the system for normal operation.
Test Step
Result / Action to Take
J1 CHECK FOR CORRECT COOLANT LEVEL
Ignition OFF.
Check the engine coolant level when hot and cold.
Is the engine coolant at the correct levels (hot and cold)?
Yes
GO to
J2
.
No
GO to
J3
.
J2 CHECK FOR HOT COOLANT AT THE HEATER CORE INLET HOSE
WARNING: The heater core inlet hose will become too hot to handle and may cause
serious burns if the system is working correctly.
Allow the engine to reach normal operating temperature.
Feel the heater core inlet hose.
Is the heater core inlet hose too hot to handle?
Yes
GO to
J4
.
No
REFER to
Section 303-03
to check the cooling system function.
J3 CHECK THE ENGINE COOLING SYSTEM FOR LEAKS
Fill the engine cooling system to the specified level.
Pressure check the cooling system, including the pressure relief cap. Refer to
Section 303-03
. It
is not necessary to check the components separately at this time.
Does the engine cooling system, including the pressure relief cap, hold pressure?
Yes
GO to
J4
.
No
REPAIR the engine cooling system leak. TEST the system for normal
operation.
J4 CHECK FOR HOT COOLANT AT THE HEATER CORE OUTLET HOSE
WARNING: The heater core outlet hose will become too hot to handle and may
cause serious burns if the system is working correctly.
Allow the engine to reach normal operating temperature.
Feel the heater core outlet hose.
Is the heater core outlet hose cool or cold?
Yes
CARRY OUT the heater core component test. REFER to Heater Core
under Component Tests in this section to determine whether a plugged or
partially plugged condition exists.
No
Vehicles with manual climate control,
GO to Pinpoint Test M
.
Vehicles with EATC,
GO to Pinpoint Test A
.
Page 27 of 47
2003 Taurus/Sable Workshop Manual
11/22/2011
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3H/~MUS~LEN/19/...
