Test Step 1. Inspect Electrical Connectors and Wiring -807640541

363

TM 9-2320-312-24-2

Troubleshooting Section

g00668646

Illustration 161

Terminal locations for ECM

Test Step 1. Inspect Electrical Connectors

Not OK

and Wiring.

Repair: Repair the connectors or wiring and/or

replace the connectors or wiring. Ensure that all

A. Thoroughly inspect ECM vehicle harness

of the seals are properly in place and ensure that

connector J1/P1, the firewall bulkhead

the connectors are completely coupled.

connector, or the PTO Switch ON Lamp. Refer

to Troubleshooting, "Electrical Connectors -

STOP.

Inspect" for details.

Test Step 2. Check for Normal Operation

B. Perform a 45 N (10 lb) pull test on each of the

of the PTO Switch ON Lamp.

wires in the ECM Connector that are associated

with the PTO Switch ON Lamp.

A. Use the following procedure for the output 1

Refer to Illustration 161.

(PTO Switch ON Lamp).

C. Check the ECM connector (allen head screw) for

Connect ET to the cab data link connector.

the proper torque of 6.0 Nm (55 lb in).

Access the status screen that displays the "PTO

Configuration" and the PTO On/Off Switch.

D. Check the harness and wiring for abrasion and

The "PTO Configuration" must indicate "Cab

pinch points from the battery to the ECM.

Switches", "Remote Switches", or "Remote

Throttle". The "PTO Configuration" is not

Expected Result:

programmed to turn on the PTO Switch ON

Lamp if the "PTO Configuration" parameter is

All connectors, pins and sockets should be

programmed to "OFF".

completely coupled and/or inserted and the harness

and wiring should be free of corrosion, abrasion

or pinch points.

Results:

OK Proceed to Test Step 2.