IK2200016 - Post Trip Inspection System Wont Disarm or Does Not Operate Correctly.

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Countries:

AUSTRALIA, BRAZIL, CANADA, UNITED
STATES, SOUTH AFRICA

Document
ID:

IK2200016

Availability:

ISIS, Bus ISIS, FleetISIS

Revision:

4

Major System: BUS BODY

Created:

11/21/2006

Current
Language:

English

Last
Modified:

8/15/2013

Other
Languages:

Français, Español,

Author:

Al
Schnellenberger

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3522
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Title: Post Trip Inspection System Wont Disarm or Does Not Operate Correctly.
Applies To: All buses with sales codes 0047MYZ and 0047MAH

NOTE:
This DOES NOT apply to buses equipped with other post trip systems such as Child Reminder System
(CRS – Feature Code: 0047BGR, 047DXR, or 0047MZP) or Child Check Mate.

Hook up the breakout box to the ESC or Body Controller and trigger the system by following the normal procedure described below.
On pre 2007 vehicles, with the ESC
With the alarm triggered, jump pin 7 (PTI input) and pin 3 (ZVR output) together on the 1600 connector on the ESC. The 1600 connector is the
gray connector on the side of the ESC that has only two connectors. If the system disarms, the problem is not in the ESC. Troubleshoot Post
Trip Inspection circuits. Refer to S08291 chapter 9 sheet 2.
On post 2007 vehicles, with the Body Controller
With the alarm triggered, jump connector 1600 pin A2 (PTI input) and connector 1602 pin E7 (ZVR output) together. If the system disarms, the
problem is not in the Body Controller. Troubleshoot Post Trip Inspection circuits. Refer to S08329 Chapter 10 Sheet 2.
Post Trip Inspection Operation-Code 0047MAH, (See note below)
The post trip inspection system causes the horn to sound and the headlights to flash if the driver does not open and close the rear emergency
exit prior to exiting the bus. The intent of this system is to cause the driver to walk the length of the bus interior and scan for students who may
still be in the bus. The system utilizes the ESC and is armed if the service door is opened and the red PWL are energized (normal requirements
for loading students). The armed system is then triggered when the key switch is moved out of the ignition position. Once the system is
triggered, the headlights begin to flash and the EGC alarm sounds to remind the driver to check the bus for children. If the system is not
disarmed after being triggered for one minute, the bus electric horn will be cycled by the ESC for an additional ten minutes. To disarm the
system, the following must occur:
1. Set park brake. (The ESC must see good status for brake switch)
2. Place key switch in the accessory position.(The ESC must see the transition of ignition turning off, and accessory coming back on)
3. Lift the rear emergency exit handle and return handle to the locked position
NOTE:
Code 0047MYZ requires that a push button be pushed above the rear emergency exit as apposed to
lifting the emergency exit handle and returning it to the locked position.Other than the disarming
mechanism (push button vs. exit handle movement), the systems are the same.

NOTE:
If the buzzer, in the cluster, does not operate with this feature but works with other features, check the
power and ground circuits to the cluster. A missing voltage will cause this problem.

Use DLB to make a session from the Post Trip Inspection feature code. This will display the signals that apply to this feature.
Watch the signals to see if they activate. Watch the Leave_No_Student_Behind_State to see if it changes as described in the diagram below.

https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 9/3/2013

IK2200016 - Post Trip Inspection System Wont Disarm or Does Not Operate Correctly.

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https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 9/3/2013