bert
[Entry]
"@poojer there should be a fan relay. You do need to check that as well. Let us know what engine size your T-Bird has
Update (09/29/2017)
From teh repair CD on how to test the fan:
4.6L, OBD-II:
X240 ELECTRIC COOLING FAN CONCERN: DID THE FAN OPERATE AT ANY SPEED?
Note: For the proper results of these pinpoint tests, no fault DTCs must have been present during EEC-V Quick Test.
For one speed fan applications (Mustang), GO directly to X241 .
During the operational check of both fan speeds, did the fan operate at any speed?
Yes
Only one fan speed is operational. GO to X250 .
No
Cooling fan will not operate at any speed. GO to X241 .
X241 COOLING FAN WILL NOT OPERATE AT ANY SPEED: COMMAND FAN ON (HIGH SPEED FOR TWO SPEED APPLICATIONS) AND CHECK FOR VOLTAGE AT FAN
Scan Tool connected.
Key on, engine off.
Still in Output Test Mode, with fan commanded off.
Disconnect cooling fan (either one for Windstar).
Command fan on (high speed for two speed fan applications).
Measure voltage between the Power-To-(High Speed) Fan circuit at the cooling fan vehicle harness connector and chassis ground.
Key off.
Was voltage greater than 10.0 volts?
Yes
Power is being supplied to fan. GO to X245 .
No
GO to X242 .
X242 CHECK FOR B(+) TO FAN RELAYS IN CCRM
Key off.
Cooling fan disconnected.
Disconnect CCRM.
Connect negative probe of DVOM to the battery negative post.
For Mustang, Thunderbird/Cougar:
Check voltage at pins 3 and 4 of the CCRM vehicle harness connector.
For Continental:
Check voltage at pins 3, 4, 8 and 10 of the CCRM vehicle harness connector.
For Windstar:
Check voltage at pins 1, 2, 6, 7, 12 and 24 of the CCRM vehicle harness connector.
Is each voltage greater than 10.0 volts?
Yes
GO to X243 .
No
B(+) fault. CHECK condition of related fuses/fuse links. If OK, SERVICE open circuit. If fuse/fuse link is damaged, CHECK B(+) circuit for short to ground before replacing.
For Continental:
If open was to only CCRM pins 3 and 4, after service, GO to X272 (to check both HFC relays in CCRM and Power-To-Fan circuit). Otherwise, RECONNECT all components. RE-EVALUATE symptom.
For Windstar:
If open was only to CCRM pins 1, 2, 6 and 7, after service, GO to X272 (to check both HFC relays in CCRM and Power-To-Fan circuit). Otherwise, RECONNECT all components. RE-EVALUATE symptom.
All others:
RECONNECT all components. RE-EVALUATE symptom.
X243 CHECK POWER-TO-FAN(S) CIRCUIT CONTINUITY BETWEEN CCRM AND COOLING FAN(S)
Key off.
CCRM disconnected.
Cooling fan disconnected.
For Mustang:
Measure resistance between pin 2 of the CCRM vehicle harness connector and the Power-To-Fan circuit at the fan vehicle harness connector.
For Thunderbird/Cougar:
Measure resistance between pin 6 of the CCRM vehicle harness connector and the Power-To-High Fan circuit at the fan vehicle harness connector.
Measure resistance between Pin 2 of the CCRM vehicle harness connector and the Power-To-Low circuit at the fan vehicle harness connector.
For Continental:
Measure resistance between the Power-To-High Fan circuit at the fan vehicle harness connector and Pins 2 and 12 of the CCRM vehicle harness connector.
Measure resistance between Pin 6 of the CCRM vehicle harness connector and the Power-To-Low Fan circuit at the fan vehicle harness connector.
For Windstar:
Measure resistance between the Power-To-Fan circuit at the fan vehicle harness connector and Pins 4 and 8 of the CCRM vehicle harness connector.
Is each resistance less than 5.0 ohms?
Yes
REPLACE CCRM. RECONNECT all components. RE-EVALUATE symptom.
No
SERVICE open Power-To-Fan circuits(s).
For Continental:
After service, GO to X273 (to check both HFC relays in CCRM).
For Windstar:
If open was just between CCRM Pin 4 and the fan, after service GO to X273 (to check both HFC relays in CCRM). Otherwise, RECONNECT all components and RE-EVALUATE symptom.
All others:
RECONNECT all components and RE-EVALUATE symptom."
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