Is the resistance between 250 and 5,500 ohms?
E12 CHECK 436 (RD/LG) CIRCUIT FOR AN OPEN
Disconnect: Recirc Door Actuator C289.
Measure the resistance between EATC module C228b-8, circuit 436 (RD/LG) and
recirc door actuator C289-5, circuit 436 (RD/LG).
Is the resistance less than 5 ohms?
Yes
GO to
E13
.
No
REPAIR circuit 436 (RD/LG) for an open. CLEAR the DTCs. REPEAT the self-test.
TEST the system for normal operation.
E13 CHECK THE ACTUATOR RETURN CIRCUIT 438 (RD/WH) FOR AN OPEN
Disconnect: Recirc Door Actuator C289.
Measure the resistance between EATC module C228a-20, circuit 438 (RD/WH)
and recirc door actuator C289-4, circuit 438 (RD/WH).
Is the resistance less than 5 ohms?
Yes
INSTALL a new door actuator. REFER to
Section 412-01
. CLEAR the DTCs. REPEAT
the self-test. TEST the system for normal operation.
No
REPAIR circuit 438 (RD/WH) for an open. CLEAR the DTCs. REPEAT the self-test.
TEST the system for normal operation.
E14 CHECK CIRCUIT 435 (YE/LB) FOR AN OPEN
Disconnect: Recirc Door Actuator C289.
Measure the resistance between EATC module C228b-3, circuit 435 (YE/LB) and
recirc door actuator C289-3, circuit 435 (YE/LB).
Is the resistance less than 5 ohms?
Yes
INSTALL a new door actuator. REFER to
Section 412-01
. CLEAR the DTCs. REPEAT
the self-test. TEST the system for normal operation.
No
REPAIR circuit 435 (YE/LB) for an open. CLEAR the DTCs. REPEAT the self-test.
TEST the system for normal operation.
E15 CHECK CIRCUIT 436 (RD/LG) FOR A SHORT TO GROUND
Measure the resistance between EATC module C228b-8, circuit 436 (RD/LG) and
ground.
Is the resistance greater than 10,000 ohms?
Yes
GO to
E16
.
No
REPAIR circuit 436 (RD/LG) for a short to ground. CLEAR the DTCs. REPEAT the self-
test. TEST the system for normal operation.
E16 CHECK CIRCUIT 435 (YE/LB) FOR A SHORT TO GROUND
Page 18 of 45
2006 Town Car Workshop Manual
12/30/2011
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