Measure the resistance between ground and EATC module C228b-3, circuit 435
(YE/LB).
Is the resistance greater than 10,000 ohms?
Yes
GO to
E17
.
No
REPAIR circuit 435 (YE/LB) for a short to ground. CLEAR the DTCs. REPEAT the self-
test. TEST the system for normal operation.
E17 CHECK CIRCUIT 436 (RD/LG) FOR A SHORT TO VOLTAGE
Ignition ON.
Measure the voltage between EATC module C228b-8, circuit 436 (RD/LG) and
ground.
Is voltage present?
Yes
REPAIR circuit 436 (RD/LG) for a short to voltage. CLEAR the DTCs. REPEAT the self-
test. TEST the system for normal operation.
No
GO to
E18
.
E18 CHECK CIRCUIT 435 (YE/LB) FOR A SHORT TO VOLTAGE
Measure the voltage between ground and EATC module C228b-3, circuit 435
(YE/LB).
Is voltage present?
Yes
REPAIR circuit 435 (YE/LB) for a short to voltage. CLEAR the DTCs. REPEAT the self-
test. TEST the system for normal operation.
No
INSPECT for binding or broken door and linkage. If no condition is found, GO to
E22
.
E19 CHECK CIRCUIT 438 (RD/WH) AND CIRCUIT 436 (RD/LG) FOR A SHORT
TOGETHER
Disconnect: Recirc Door Actuator C289.
Measure the resistance between EATC module C228a-20, circuit 438 (RD/WH)
and EATC module C228b-8, circuit 436 (RD/LG).
Is the resistance less than 5 ohms?
Yes
REPAIR circuits 438 (RD/WH) and circuit 436 (RD/LG) for a short together. CLEAR the
DTCs. REPEAT the self-test. TEST the system for normal operation.
No
INSTALL a new door actuator. REFER to
Section 412-01
. CLEAR the DTCs. REPEAT
the self-test. TEST the system for normal operation.
E20 CHECK CIRCUIT 438 (RD/WH) AND CIRCUIT 435 (YE/LB) FOR A SHORT
TOGETHER
Measure the resistance between EATC module C228a-20, circuit 438 (RD/WH)
and EATC module C228b-3, circuit 435 (YE/LB).
Yes
REPAIR circuits 438 (RD/WH) and circuit 435 (YE/LB) for a short together. CLEAR the
DTCs. REPEAT the self-test. TEST the system for normal operation.
No
INSTALL a new door actuator. REFER to
Section 412-01
. CLEAR the DTCs. REPEAT
the self-test. TEST the system for normal operation.
Page 19 of 45
2006 Town Car Workshop Manual
12/30/2011
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS6G/~MUS~LEN/19/...