Illustration 178 Schematic for the AT/MT/HT Transmission Relay

406

TM 9-2320-312-24-2

Troubleshooting Section

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Illustration 178

Schematic for the AT/MT/HT Transmission Relay

Test Step 1. Check Electrical Connectors

and Wiring.

A. Thoroughly inspect ECM connectors J1/P1

and the firewall bulkhead connector. Refer

to Troubleshooting, "Electrical Connectors -

Inspect" for details.

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

wires that go to P1:20 or P1:12.

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

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

D. Check the harness and wiring for abrasion and

pinch points from the sensor to the ECM.

Expected Result:

All connectors, pins and sockets should be

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.

Not OK

Repair: Perform the following repair:

Repair the connectors or wiring and/or replace

the connectors or wiring. Ensure that all of the

seals are properly in place and ensure that the

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Illustration 179

connectors are completely coupled.

ECM terminal