Windstar V6-232 3.8L (1995)
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Measure resistance between powertrain control module test Pin 64 at breakout box and TR signal circuit at TR sensor vehicle harness connector.
Is each resistance less than 5.0 Ohms?
Yes
GO to A4.
No
SERVICE open circuit(s).
REMOVE breakout box.
RECONNECT all components.
ERASE DTCs and verify repair.
A4 Check TR Circuit For Shorts To Power And Ground
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Make sure Rotunda Breakout Box or equivalent is installed and powertrain control module disconnected.
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Make sure TR switch harness connector is disconnected.
Note: Refer to schematic and charts preceding this pinpoint test. See: Description
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Measure resistance between powertrain control module test Pin 64 and test Pins 71/97, 24, 51, 76, 77, 103 and 91 at the breakout box.
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Measure resistance between powertrain control module test Pin 64 at breakout box and chassis ground.
Is each resistance greater than 10,000 Ohms?
Yes
GO to A5
No
SERVICE short circuit.
REMOVE breakout box.
RECONNECT all components.
ERASE DTCs and verify repair.
A5 Check Operation Of Transmission Range Sensor
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Disconnect TR sensor harness connector at the transmission.
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Connect Transmission Tester (007-00085) with TR Sensor Kit (007-00086) to TR sensor.
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Using procedures provided with tester, verify transmission range sensor functions in all positions.
Check continuity and resistance in all positions.
Check RUN/START, backup lamps, and optional switch functions.
Is the transmission range sensor OK?
Yes
Concern is not in sensor.
If directed here from Diagnosis by Symptom,
RETURN to Routine, verify symptom.
If diagnosing a DTC,
REFER to the Powertrain Diagnosis to diagnose intermittent concerns.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection
No
REPLACE transmission range sensor and adjust as outlined. See: Service and Repair
ERASE DTCs and verify repair.
