PTO Engine Shutdown Switch Circuit

345

TM 9-2320-312-24-2

Troubleshooting Section

(Table 183, contd)

Powertrain Status Parameter Group Definition Table

Displayed Message

Definition of Message

Heading On Status Screen

"No Communication"

The ECM is not receiving

ABS Status

communication from the vehicle's

ABS/Traction Control System. One of

the following conditions exists: The

vehicle does not support this feature.

The vehicle's ABS/Traction Control

System is not currently powered. The

wiring is damaged or disconnected.

"Not Active"

There are no requests from the ABS

Control .

"Disable Retarder"

The control for the ABS system

requests the operation of the engine

retarder to stop.

Results:

A. Connect the electronic service tool to the cab

data link connector.

Yes If the response is abnormal, send the

B. While the vehicle is being driven by someone

vehicle to the OEM dealer for repairs. STOP.

else, monitor the electronic service tool. Use the

following procedure:

a. Access the status screen. Select the

Repair: Perform the following diagnostic

"Powertrain Status" screen. The "Powertrain

procedure:

Status" screen relates to the J1939 data link.

Troubleshooting, "Troubleshooting without a

b. While the vehicle is being operated, monitor

Diagnostic Code"

the "Powertrain Status" Screen.

STOP.

Refer to Table 183 for an explanation of

the parameters that are displayed in the

i01619414

"Powertrain Status" screen of the electronic

PTO Engine Shutdown Switch

service tool.

Circuit - Test

Note: Transmission shifts and/or a momentary loss

of traction should trigger the electronic service tool

SMCS Code: 1165-038-ZS; 1408-081

display and the appropriate action by the ECM

when the correct sensors, controls and wiring are

System Operation Description:

installed on the vehicle.

Use this procedure under the following situation:

Expected Result:

Use this procedure to determine if the circuit for the

The electronic service tool status screen indicates

PTO Engine Shutdown Switch is operating correctly.

that the ECM is responding to a power train control.

The following background information is related

Note: Some power train control modules have test

to this procedure:

modes that are available by activating diagnostic

switches. Ensure that the Caterpillar ECM is not

reacting to a test by the power train control module

if the problem is related to power train control

operation and you believe that the system should

not be active.