IK2200156 Service Bulletin/Repair Instructions

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Title: Next Gen CE Bus Entrance Door Troubleshooting Tips
Applies To: Next Gen CE Bus
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
109/1 5/2025 - update torque value for set screw 4586323c2
106/20/2025 - updated diagrams, door stop info, added info on air controls

101/15/2025 - Updated Air pressure setting
"01/10/2025 - Initial Article Release
DESCRIPTION
Countries:

Avallabllity:
Major System: BUS BODY

Current Language: English

Other Languages: NONE
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Created:
CANADA, UNITED STATES Document ID: 1K2200156

ISIS, Bus ISIS, IsSIR
3

9/3/2024
Last Modified: 9/15/2025
Author:
Brandon Akridge
Not Helpful
This document provides guidance for troubleshooting issues with the entrance door of Next Gen CE Bus. While the primary focus is on achieving a

properly adjusted latching entrance door, it also includes additional helpful tips. Please note that this document is not exhaustive and only

addresses some common issues and their resolutions. For more detailed information, refer to Service Manual 0001283373. If this article or the

Service Manual does not cover the topic, please create a case file for more specific assistance.
SYMPTOM(s)
Symptoms covered in this article:

Door latching issues with Bus

Door is closed, but the dash shows open
Door is closed, but the step/dome lights are still on

Door is closed, but PTI (Post Trip Inspection) is not disengaging
Door latching issues with Bus Off

¢ Doors will not latch
e One or both doors do not open or close as before

e The motor is making abnormal noises
Exterior release issues
e Electric Door not closing
e Electric Door not opening
e Air Door does not dump air

Air door functionality
e Closes too fast
e Closes too slow

¢ Doors hit body
SPECIAL TOOL(s) / SOFTWARE
Red PWL (Pupil Warning Lights) activate skipping the Amber lights when the flasher system starts

N/A
SERVICE PARTS INFORMATION
Kit Description Part Number Required Notes
Set Screw, 1/4-20 Unc Thread lock 4586323c1 2 with partial red thread lock patch

Set Screw, 1/4-20 Unc Thread lock 4586323c2 2 with full blue thread lock patch

Actuator, Fwd Entr Door Motor, w/Slip Clutch 4640535c1 1
Actuator, Rear Entr Door Motor, w/Slip Clutch 4640536c1 1
To prevent personal injury and/or death, or property damage, park the vehicle
on a hard flat surface, turn the engine off, set the parking brake, and install

wheel chocks to prevent the vehicle from moving in both directions.
To prevent personal injury and/or death, always wear safe eye protection

when performing vehicle maintenance
DIAGNOSTIC STEP(s)
See below for additional information on each specific topic.
Door Latching issues with Bus
Under normal operating conditions, each door will have two audible clicks when properly latched, this a 2 stage latch design similar to most

personal vehicles door latches. When checking manually, the force required to latch is

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