Ford F-150 2002 - Pinpoint Test B: Transmission Fluid Temperature Sensor; B1 Electronic Diagnostics; B2 Warm-Up;Cool-Down Cycle

PINPOINT TEST B: TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR
NOTE: Refer to the Transmission Vehicle Harness Connector illustration preceding these pinpoint tests.
Select "ON".
Press "SEND".
Measure the voltage while cycling the solenoids ON and OFF. Listen for the solenoid to
activate (click).
Select "OFF", press "SEND".
 Does the voltage change?
Yes
GO to A7.
No
REPAIR the circuit. TEST the system for normal operation.
A7 CHECK SOLENOID RESISTANCE AT SOLENOID
Measure the resistance between pin 1 and pins 2, 3, 4 and 5 solenoid side.
Solenoid Resistance (ohms)
SSA 20-30
SSB 20-30
SSC 20-30
CCS 20-30
TCC 9-16
 Is the resistance within specification?
Yes
GO to A8.
No
INSTALL a new solenoid body assembly. TEST the system for normal operation.
A8 CHECK SOLENOID FOR SHORT TO GROUND
Measure the resistance between pin 1and pins 2, 3, 4 and 5 solenoid side and ground.
 Is the resistance less than 5 ohms?
Yes
INSTALL a new solenoid body assembly.
No
REFER to Diagnosis By Symptom in this section for diagnosis of shift or torque converter
concerns.
CONDITIONS DETAILS/RESULTS/ACTIONS
B1 ELECTRONIC DIAGNOSTICS
Page
12
of
33
2002 F
-
150 Workshop Manual
9/17/2010
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS21/~MUS~LEN/19/S
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