Explorer 2WD V8-302 5.0L VIN P SFI (1999)
Powertrain Control Module: Customer Interest
A/T - MIL Flashing, DTC'S P0741 And P1728 Set
Article No.
01-5-4
March 19, 2001
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ELECTRICAL - LAMP - TRANSMISSION CONTROL
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INDICATOR LAMP (TCIL) ILLUMINATED -
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DIAGNOSTIC TROUBLE CODE (DTC) P0141
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AND/OR P1728 - VEHICLES EQUIPPED WITH 5.0L
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ENGINE AND 4R70W TRANSMISSION ONLY
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TRANSMISSION - 4R70W - TRANSMISSION
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CONTROL INDICATOR LAMP (TCIL)
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ILLUMINATED - DIAGNOSTIC TROUBLE CODE
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(DTC) P0741 AND/OR P1728 - VEHICLES EQUIPPED
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WITH 5.0L ENGINE AND 4R70W TRANSMISSION ONLY
FORD:
1998-2001 EXPLORER
MERCURY:
1998-2001 MOUNTAINEER
ISSUE
Some vehicles may exhibit a flashing Transmission Control Indicator Lamp (TCIL) accompanied by a Diagnostic Trouble Code (DTC) P0741 and in
some cases P1728. This may be caused by the Output Shaft Speed Sensor (OSS) signal being improperly processed by the Powertrain Control Module
(PCM).
ACTION
Retrieve DTCs. Verify DTC P0741 and in some cases P1728. Diagnose and reprogram the PCM if necessary. Refer to the following Service Procedure
for details.
SERVICE PROCEDURE
1.
Verify transmission fluid levels (and transfer case level if equipped).
2.
Verify that DTC P0741 and in some cases P1728 are present. If other DTCs are present, repair them first.
3.
Follow the Output State Control (OSC) procedures for both bench and drive modes as listed in the appropriate model year Workshop Manual
(Section 307-1A) to verify transmission and solenoid operation. While in OSC drive mode, monitor OSS Sensor - OSS PID for proper signal as
stated in the Workshop Manual. This will verify OSS operation. If the solenoids or transmission fail to perform properly, follow normal diagnosis
and repair procedures.