Actron 9640 User Manual

The Output Sw (Switch) Test, also known as the Output State Check, is used 

to check the operation of the computer-controlled relays and solenoids on 

EEC-IV vehicles. The user can troubleshoot circuits using a voltmeter to 

measure voltage at the relays and solenoids in both energized and 

non-energized conditions. All measurements should be recorded for reference.

✓

Fuel injectors are NOT energized during this test.

✓

On vehicles equipped with Integrated Vehicle Speed Control (IVSC),

failure to disconnect the vacuum supply hose from the Speed Control

Servo energizes the Speed Control Solenoids.

Select Output Sw Test from the Ford 

Function List and press 

ENTER. 

Observe the screens and follow the 

instructions.

1) Set Parking Brake.
2) Put Transmission In Park Or Neutral.
3) Turn A/C Off.
4) Start Engine — Let Idle Until Hot.
5) Turn Ign Key Off.
6) Wait 10 Seconds. Turn Key On-Engine Off. Do not Start Engine.

The test screen indicates the time 

remaining. Do not touch vehicle or tools  

during this time until the next screen 

appears.

Depress the accelerator pedal fully to 

turn ON relays and solenoids. Do the 

same to turn them OFF. This can be 

repeated as many times as required to 

locate the fault. 

Turn the ignition key Off and press 

FUNC to return to the Ford Function List.

Ford Function List ?

7)DCL Data 

~

Procedure Runs Less
Than 3 Minutes.

Time Remaining=1:56

Relays & Solenoids ?
Are *Off*. Depress &]
Release Throttle

 [

Fully To turn On.  ~