Ford F-150 2002 User Manual

Diagnostics
Diagnosing an electronically controlled automatic transmission is simplified by using the following procedures. One of the most important things to remember is that
there is a definite procedure to follow. DO NOT TAKE SHORTCUTS OR ASSUME THAT CRITICAL CHECKS OR ADJUSTMENTS HAVE ALREADY BEEN MADE.
Follow the procedures as written to avoid missing critical components or steps. By following the diagnostic sequence, the technician will be able to diagnose and repair
the concern the first time.
On
-
Board Diagnostics with Diagnostic Tool
SECTION 307-01A: Automatic Transmission — 4R100 2002 F-150 Workshop Manual
DIAGNOSIS AND TESTING
Procedure revision date: 06/20/2001
Special Tool(s)
UV Leak Detector Kit
164-R0756 or equivalent
Transmission Fluid Pressure Gauge
307-004 (T57L-77820-A)
73 III Automotive Meter
105-R0057 or equivalent
E4OD Transmission Cable
418-F037 (007-00107) or equivalent
Breakout Box, EEC-V Control System
418-049 (T94L-50-EEC-V) or equivalent
Worldwide Diagnostic System (WDS)
418-F224
New Generation STAR (NGS) Tester
418-F052 or equivalent scan tool
Transmission Tester
307-F016 (007-00130) or equivalent
Alignment Gauge, TR Sensor
307-351 (T97L-70010-A)
MLP-TR Cable
418-F107 (007-00111) or equivalent
Trans Tester TR/MLP Overlay and Manual
007-00131 or equivalent
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2002 F
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150 Workshop Manual
9/17/2010
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Ford F-150 2002 Specifications

General

Brand	Ford
Model	F-150 2002
Category	Automobile
Language	English

Summary

Diagnostics and Special Tools

Special Tool(s)

Lists and illustrates essential tools for transmission diagnostics.

Diagnostic Procedures

Quick Test and Drive Cycle Test

Procedures for initial scan tool tests and drive cycle diagnosis.

On-Board Diagnostics and DTC Charts

Overview of vehicle diagnostics and reference to trouble code charts.

Transmission Testing Tools and Layouts

Rotunda Transmission Tester

Details on using the Rotunda Transmission Tester for diagnostics.

Transmission Connector Layouts

Diagrams and pinouts for transmission vehicle harness and sensor connectors.

Shift Solenoid Diagnosis

Pre-Diagnosis and Operation Charts

Solenoid charts for operation, failure modes, and pre-diagnosis.

Pinpoint Test A: Shift and Torque Converter Clutch Solenoids

A1 Electronic Diagnostics

Initial electronic diagnostics for shift and torque converter clutch solenoids.

Pinpoint Test B: Transmission Fluid Temperature Sensor

B1 Electronic Diagnostics

Initial electronic diagnostics for the TFT sensor.

B2 Warm-Up/Cool-Down Cycle

Procedure to monitor TFT PIDs during temperature changes.

Pinpoint Test C: Digital Transmission Range Sensor

C1 Verify Diagnostic Trouble Codes

Checks for specific DTCs P0705, P0708 to determine test path.

C2 Verify Digital Transmission Range Sensor Alignment

Checks and verifies the alignment of the digital TR sensor.

Pinpoint Test D: Electronic Pressure Control Solenoid

D1 Electronic Diagnostics

Initial electronic diagnostics for the EPC solenoid.

D2 Solenoid Functional Test

Tests the functional operation of the EPC solenoid.

Pinpoint Test E: Speed Sensors

E1 Electronic Diagnostics

Initial electronic diagnostics for TSS and OSS sensors.

E2 Drive Cycle Test

Tests TSS/OSS sensor function during vehicle operation.

Pinpoint Test F: Solenoid Mechanical Failure

F1 Electronic Diagnosis

Checks for DTCs related to solenoids before proceeding with mechanical tests.

F2 Transmission Drive Cycle Test

Performs drive cycle test to check for solenoid mechanical issues.

Special Testing Procedures

Line Pressure Test

Verifies transmission line pressure is within specifications.

Stall Speed Test

Tests torque converter and clutch operation at maximum engine RPM.

Air Pressure Tests and Torque Converter Drainback

Air Pressure Test Port Locations

Illustration showing locations for air pressure test ports.

Torque Converter Drainback Test

Tests for excessive fluid drainback from the torque converter.

Leakage Inspection

Fluid Leakage in Torque Converter Area

Procedures to locate fluid leaks in the front pump and torque converter area.

Leak Check Test

Tests to determine the cause of fluid leakage before repair.

Transmission Fluid Cooler Flow Test

Fluid Cooler Flow Test Procedure

Procedure to check the flow rate of fluid through the transmission cooler.