Test Step 2. Verify the Driver Alert Function for Idle Shutdown and the Override Function for Idle Shutdown

286

TM 9-2320-312-24-2

Troubleshooting Section

f. Observe the "Idle Shutdown Status".

Note: The pedals must be pressed while the check

engine lamp is flashing. The check engine lamp

flashes during the 90 second period before the

Expected Result:

programmed shutdown time.

Result 1 The "Idle Shutdown Status" indicates

"Counting".

E. Reprogram the "Idle Shutdown Time" to the value

that was recorded earlier for this test.

Result 2 The "Idle Shutdown Status" indicates "Not

Active".

Expected Result:

During the 90 second period before the scheduled

Results:

shutdown, the status should change from "Counting"

Result 1 The ECM is reading the proper

to "Driver Alert" and the check engine lamp should

flash rapidly. If the "Allow Idle Shutdown Override"

conditions for the activation of the "Idle Shutdown

is programmed to "YES", the "Idle Shutdown Status"

Timer". Proceed to Test Step 2.

should change to "Override" after the pedals are

Result 2 The ECM is not reading the proper

depressed.

conditions for activation of the "Idle Shutdown

Result 1 The idle shutdown timer behaves in the

Timer". Proceed to Test Step 3.

manner that is described above.

Test Step 2. Verify the Driver Alert

Function for Idle Shutdown and the

Result 2 The check engine lamp did not flash

Override Function for Idle Shutdown.

during the alert.

Result 3 The ECM did not sense a change in the

A. Connect ET to the cab data link connector.

status of the service brake.

B. Access the Customer Parameters on ET.

Result 4 The ECM did not sense a change in the

status of the clutch.

a. Access the following display screens in order:

Results:

"Service"

Result 1 The idle shutdown timer is operating

"Configuration"

properly. STOP.

b. Record the programmed time for the "Idle

Result 2 The check engine lamp did not flash

Shutdown Time". The "Idle Shutdown Time"

during the alert.

must be between 3 and 1440 minutes. If the

"Idle Shutdown Time" is programmed to 0,

Repair: Perform the following diagnostic

the timer is disabled.

procedure: Troubleshooting, "Check Engine Lamp

Circuit - Test"

c. Reprogram the "Idle Shutdown Time" to 3

minutes for this test.

STOP.

C. Observe the following items during the 90 second

Result 3 The ECM did not sense a change in

period before the programmed shutdown time:

the status of the service brake.

Check engine lamp

Repair: Perform the following diagnostic

procedure: Troubleshooting, "Service Brake Pedal

"Idle Shutdown Status"

Position (Switch 1) Circuit - Test"

D. If the customer parameter of "Allow Idle

STOP.

Shutdown Override" is programmed to "YES",

perform either of the following actions in order to

Result 4 The ECM did not sense a change in

override the shutdown:

the status of the clutch.

Press the clutch pedal.

Repair: Perform the following diagnostic

procedure: Troubleshooting, "Clutch Pedal

Press the service brake pedal.

Position Switch Circuit - Test"

STOP.