A/T - 4R75E Erratic Operation/Various DTC's Set
TSB 09-3-302/23/09
4R75E TRANSMISSION - ERRATIC OPERATION,
VARIOUS DIAGNOSTIC TROUBLE CODES (DTCS),
BLOWN FUSES - BUILT BEFORE 12/1/2008
FORD:
2009 Crown Victoria, E-150, F-150
LINCOLN:
2009 Town Car
MERCURY:
2009 Grand Marquis
ISSUE
Some 2009 F-150, E-150, Crown Victoria, Grand Marquis and Town Car vehicles equipped with 4R75E transmission and a transmission build date before 12/1/2008, may exhibit improper gear selection, converter clutch operation or improper shift feel. The cause may be an intermittent electrical open or short circuit and/or a fuse blown in the battery junction box (BJB). The most likely diagnostic trouble codes (DTCs) for this concern are related to transmission internal solenoids and they are as follows: P0750, P0753, P0755, P0758, P0740 P0743, P0748, P0962, P0963 and/or P0712. Depending on shorted circuits, an open fuse might be present at BJB location F21 in Crown Vic, Grand Marquis or Town Car; BJB location F79 in E-Series and F-Series
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
The most likely cause is a misrouted internal wiring harness being pinched between the transmission fluid pan and the main control.
1. Check the transmission built date on the transmission tag.
a. If the transmission built date is before 12/1/2008 and the vehicle exhibits the symptoms described, go to Step 2.
b. If the transmission built date is on 12/1/2008 or after, this procedure does not apply. Follow normal diagnostic in WSM, Section 307-01.
2. Remove the transmission fluid pan and perform a visual inspection of internal wire harness routing. (Figure 1). Follow WSM, Section 307-01 for transmission fluid pan removal and wire harness replacement.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
090303A 2009 F-150 4R75E 1.1 Hrs.
Transmission: Check
DTCs, Replace Wire
Harness, Includes Time To
Remove And Install Fluid
Pan (Do Not Use With
12650D, 7191A, 7191A15)
090303A 2009 Crown Victoria, 1.2 Hrs.
Grand Marquis, Town Car
4R75E Transmission:
Check DTCs, Replace
Wire Harness, Includes
Time To Remove And
Install Fluid Pan (Do Not
Use With 12650D, 7191A,
7191A15)
090303A 2009 Econoline 4R75E 1.3 Hrs.
Transmission: Check
DTCs, Replace Wire
Harness, Includes Time To
Remove And Install Fluid
Pan (Do Not Use With
12650D, 7191A, 7191A15)
DEALER CODING
CONDITION
BASIC PART NO. CODE
7G276 43
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