Test Step 2. Inspect Electrical Connectors and Wiring -807640559

381

TM 9-2320-312-24-2

Troubleshooting Section

If a problem is still suspected with the circuit

for the Service Brake Pedal Position (Switch 1),

perform the following procedure:

Proceed to Test Step 2.

Test Step 2. Inspect Electrical Connectors

and Wiring.

g00702676

Illustration 168

A. Thoroughly inspect ECM vehicle harness

Expected Result:

connector J1/P1, the firewall bulkhead connector

All connectors, pins and sockets should be

and the terminals for the following switches in

completely coupled and/or inserted and the harness

the connectors:

and wiring should be free of corrosion, abrasion

AP Sensor/Switch Sensor Common (terminal 5)

or pinch points.

Service Brake Pedal Position (Switch 1)

Results:

(terminal 45)

OK Proceed to Test Step 3.

Refer to Troubleshooting, "Electrical Connectors

Not OK

- Inspect" for details.

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

Repair: Perform the following repair:

wires in the ECM connector that are associated

with the switches.

Repair the connectors or wiring and/or replace

the connectors or wiring. Ensure that all of the

Refer to Illustration 168.

seals are properly in place and ensure that the

connectors are completely coupled.

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

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

Verify that the repair eliminates the problem.

D. Check the harness and wiring for abrasion and

STOP.

pinch points from the sensor to the ECM.