Test Step 3. Check the Service Brake Switch Status on ET

382

TM 9-2320-312-24-2

Troubleshooting Section

Test Step 3. Check the Service Brake

B. For an intermittent Idle Kickout, talk to the driver

Switch Status on ET.

in order to determine the conditions when the

kickout occurs. A topic of examination could be

Table 190

the following example:

Table for Status of the Service Brake Pedal Position

Specific engine rpm

Switch Position or

Status

Circuit

Pedal Position

Start the engine. Duplicate these conditions and

set the idle rpm. Operate the vehicle in idle until

The Service Brake Pedal

Open

the problem reoccurs.

is DEPRESSED.

The Service Brake Pedal

Note: The ET status screen will only indicate the

OFF

Closed

is RELEASED.

last kickout. The ET status screen will lose this

information if the ignition key switch is turned OFF.

A. Access the ET status screen.

C. Connect ET and check the status screen for

the last cause of the kickout. Refer to Tables

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

186, 187, 188, and 189 for an explanation of the

status parameter.

C. Depress the service brake while the status of the

service brake pedal position (switch 1) is being

D. If the ET status screen is blank, then either there

observed. Also, release the service brake while

was no kickout of the cruise control, or the power

the status of the service brake pedal position

to the ECM was turned off before the information

(switch 1) is being observed.

could be read. Repeat this test step.

Refer to Table 190 for the status of the switch or

Note: An ET status screen that is blank indicates

for the status of the pedal position.

No Occurrence.

Expected Result:

The switch status changes per the information in

RESULT 1 The ET Kickout Status displays the

Table 190.

following result:

Results:

"Brake"

Yes The switch is operating normally. STOP.

RESULT 2 The ET Kickout Status displays the

following result:

Intermittent Problem Suspected Proceed to Test

Step 4.

"Switch Turned Off"

No The ECM is not reading the switch status

RESULT 3 The ET Kickout Status displays the

change. Proceed to Test Step 5.

following result:

Test Step 4. Operate the Vehicle and

Check the Kickout Status Parameter.

"Cruise Control PAUSE Switch"

RESULT 4 The ET Kickout Status displays the

A. For an intermittent Cruise Control Kickout, talk to

following result:

the driver in order to determine the conditions

when the kickout occurs. Topics of examination

"Clutch"

could be the following examples:

RESULT 5 The ET Kickout Status displays the

specific speed

following result:

road conditions

"Vehicle Speed < Limit"

weather conditions

"Bad Vehicle Speed"

Take the vehicle for a road test in order to

"Vehicle Speed ≥ Limit"

duplicate these conditions and set the cruise

control. Operate the vehicle in cruise control until

RESULT 6 The ET Kickout Status displays the

the problem reoccurs.

following result: