1994 Mustang

Section 07-05: Transmission, Automatic—External Controls

1994 Mustang Workshop Manual

DIAGNOSIS AND TESTING

Symptom Chart

Use the symptom chart as an aid in determining possible conditions, sources and necessary service actions for shift control linkage.

Condition Possible Source Action

Shift Interlock System Does Not Release or Lock Properly

Circuitry open/shorted.
Blown fuse.
Damaged brake on/off switch.
Damaged shift lock actuator .

Go to Pinpoint Test A.

Shift Control Linkage Binding, Out of Proper Gear Relationship

Damaged ignition/shifter interlock cable .
Loose ignition/shifter interlock cable .
Loose retainer bracket.
Shift linkage misadjusted.

Go to Pinpoint Test B.

Transmission Control Switch and Indicator Lamp Not Operating Properly

Damaged control switch.
Circuitry open/shorted.
Blown fuse.
Burned-out miniature bulb .
Damaged powertrain control module .

Go to Pinpoint Test C.

Condition	Possible Source	Action
Shift Interlock System Does Not Release or Lock Properly	Circuitry open/shorted. Blown fuse. Damaged brake on/off switch. Damaged shift lock actuator .	Go to Pinpoint Test A.
Shift Control Linkage Binding, Out of Proper Gear Relationship	Damaged ignition/shifter interlock cable . Loose ignition/shifter interlock cable . Loose retainer bracket. Shift linkage misadjusted.	Go to Pinpoint Test B.
Transmission Control Switch and Indicator Lamp Not Operating Properly	Damaged control switch. Circuitry open/shorted. Blown fuse. Burned-out miniature bulb . Damaged powertrain control module .	Go to Pinpoint Test C.