Test Step 6. Check the Status of the PTO On/Off Switch on ET

358

TM 9-2320-312-24-2

Troubleshooting Section

Test Step 6. Check the Status of the PTO

Expected Result:

On/Off Switch on ET.

When the "PTO Configuration" is programmed to

"Cab Switches", the status parameter for the cruise

control set/resume switch on ET behaves in the

following manner:

The status of the cruise control set/resume switch

will display "OFF" when the set switch is released.

The status of the cruise control set/resume switch

changes from "OFF" to set switch "ON" when the

switch is moved to the SET position.

The status of the cruise control set/resume switch

changes from set switch "ON" to resume switch

"ON" when the resume switch is moved to the

RESUME position.

When the "PTO Configuration" is programmed to

"Remote Switches" or "Remote Throttle", the status

parameter for the remote PTO set switch behaves

in the following manner:

g00768799

Illustration 156

The status screen for the remote PTO set switch

ECM breakout T-connector

displays OFF when the remote PTO set switch

is released.

A. Turn the ignition key switch to the OFF position.

The status of the remote PTO resume switch

B. Fabricate a jumper wire 100 mm (4 inch) long.

displays OFF when the remote PTO resume

Crimp a Deutsch pin to both ends of the wire.

switch is released.

C. Disconnect vehicle harness connector P1 from

The status of the remote PTO set switch changes

the ECM.

from OFF to set switch ON when the remote PTO

set switch is moved to the SET position.

D. Connect a breakout T to ECM connector J1 and

connect P1 to the breakout T.

The status of the remote PTO resume switch

changes from OFF to resume switch ON when

E. Connect ET to the cab data link connector.

the remote PTO resume switch is moved to the

RESUME position.

F. Turn the ignition key switch to the ON position.

Results:

G. Access the "PTO On/Off Switch" status on ET.

Yes The set circuit and the resume circuit

H. While the switch status is being observed on ET

are functioning correctly. The PTO Inputs are

install the jumper into the breakout T in order to

functioning properly. Continue troubleshooting if

connect terminal 56 (input 1) to terminal 3 (input

the original condition is not resolved. STOP.

sensor common #2).

No (programmed to "Cab Switches") The "PTO

The input 1 is the PTO on/off switch.

Configuration" is programmed to "Cab Switches".

Proceed to Test Step 7.

Refer to Illustration 156.

No (programmed to "Remote Switches" or

Expected Result:

"Remote Throttle") The "PTO Configuration" is

programmed to "Remote Switches" or "Remote

The switch status of the "PTO On/Off Switch" on ET

Throttle". Proceed to Test Step 8.

behaves in the following manner:

The switch status is "OFF" when the jumper is

removed.