Ford 2003 Mustang Workshop Manual page 2366

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SECTION 307-01: Automatic Transaxle/Transmission

DIAGNOSIS AND TESTING

Special Testing Procedures

The special tests are designed to aid the technician in diagnosing the hydraulic and mechanical portion

of the transmission.

Engine Idle Speed Check

Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for diagnosis and testing of the

engine idle speed.

Item Part Number

Line Pressure Test

CAUTION: Carry out the line pressure test prior to carrying out the stall speed test. If the

line pressure is low at stall, do not carry out stall speed test or further transmission damage

will occur. Do not maintain WOT in any transmission range for more than five seconds.

This test verifies that the line pressure is within specification.

1. Connect pressure gauge to line pressure tap.

Direct clutch pressure tap

Forward clutch pressure tap

Electronic pressure control (EPC) pressure tap

Intermediate clutch pressure tap

Line pressure tap

2003 Mustang Workshop Manual

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