Operator's Manual

Output circuits are energized by an appropriate set of

input conditions. The three outputs include SVL, SVR and

SVQ. Output LED’s monitor relay condition indicating

the presence of voltage at one of three specific output

terminals.

Output circuits do not determine output device integrity so

electrical troubleshooting includes output LED inspection

and conventional device and wire harness integrity testing.

Measure disconnected component impedance, impedance

through wire harness (disconnect at ACM), or by

temporarily ”test energizing” the specific component.

The ACM does not connect to an external computer or

hand held device, can not be re–programmed, and does

not record intermittent fault troubleshooting data.

The decal on the ACM only includes symbols. Three LED

output symbols are shown in the output box. All other

LED’s are inputs. The chart below identifies the symbols.

1. On/off

2. Output

3. Solenoid valve lower

4. Solenoid valve raise

5. Solenoid valve quick

6. Input

7. Head low

8. Head high

9. Transport

10. Aerate

11. Ground following

12. OK to lower

Here are the logical troubleshooting steps for the ACM

device.

1. Determine the output fault you are trying to resolve.

2. Move key switch to ”ON” and ensure the red ”power”

LED is illuminated.

3. Move all input switches to ensure all LED’s change

state.

4. Position input devices at appropriate position to

achieve the appropriate output.

5. If specific output LED is illuminated without

appropriate output function, check output harness,

connections, and component. Repair as required.

6. If specific output LED is not illuminated, check both

fuses.

7. If specific output LED is not illuminated and inputs

are in appropriate condition, install new ACM and

determine if fault disappears.