Lincoln 2006 Town Car Workshop Manual page 6

2006 Town Car Workshop Manual
Is the resistance between 250 and 5,500 ohms?
A4 CHECK CIRCUITS 436 (RD/LG), 437 (YE/LG) AND 1122 (RD) FOR A SHORT TO GROUND
Measure the resistance between ground and the following:
HVAC module C228b-8, circuit 436 (RD/LG), harness side.
For DTC B2266, HVAC module C228b-4, circuit 437 (YE/LG), harness side.
For DTC B2267, HVAC module C228b-5, circuit 1122 (RD), harness side.
Is the resistance greater than 10,000 ohms?
A5 CHECK CIRCUITS 436 (RD/LG), 438 (RD/WH), 437 (YE/LG) AND 1122 (RD) FOR A SHORT TO
VOLTAGE
Measure the voltage between ground and the following:
HVAC module C228a-20, circuit 438 (RD/WH), harness side.
HVAC module C228b-8, circuit 436 (RD/LG), harness side.
For DTC B2266, HVAC module C228b-4, circuit 437 (YE/LG), harness side.
For DTC B2267, HVAC module C228b-5, circuit 1122 (RD), harness side.
Is any voltage present?
A6 CHECK THE BLEND DOOR ACTUATOR OPERATION
NOTE: If a jumper fuse opens while carrying out this test step, repair the circuit(s) for a short.
Ignition ON.
Measure the resistance between HVAC module C228b-4, circuit 437 (YE/LG), harness side and
HVAC module C228a-20, circuit 438 (RD/WH), harness side.
While observing the resistance, connect a fused jumper wire between:
HVAC module C228a-26, circuit 245 (BN/LG), harness side and HVAC module C228b-11,
circuit 1566 (RD/YE), harness side.
HVAC module C228a-13, circuit 246 (VT), harness side and HVAC module C228a-2, circuit
57 (BK), harness side.
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS6G/~MUS~LEN/19/...
Yes
GO to A5.
No
REPAIR circuit(s) for a short to ground. CLEAR the DTCs. REPEAT the
self-test. TEST the system for normal operation.
Yes
REPAIR circuit(s) for a short to voltage. CLEAR the DTCs. REPEAT the
self-test. TEST the system for normal operation.
No
For DTC B2266,GO to A6.
For DTC B2267,GO to A7.
Yes
INSPECT for broken door and linkage. REPAIR as necessary. If no
condition is found, GO to A9.
No
GO to A8.
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12/30/2011