FT4935

FT4935 VIP relay failure
Technical writer name
Devanand
First Level Parts
Material
Part Number
-
-
Manual section
17
Nb hours Level 1
0.25 hr
MQR
7621-2021
QTY
-
Disposal of parts
Second Level Parts (20% of 415 vehicles)
Material
Part Number
CABLE TIE (0657558)
RELAY VIP ASSEMBLY
G5007996
N80973
Client
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
New York City Transit - New York
Order
L958
L959
LB59
LA23
LB29
LB99
LA73
LA76
LC32
LB78
Removed parts are:
QTY
1
1
Road numbers
5439
5442
5443
5443
5444
5484
5485
5530
5531
5566
5567
5602
8504
8507
8508
8633
8634
8754
8526
8526
Discarded
x
Retained
-
When the retained check box is check, the parts must be retained
and returned in accordance with the usual warranty procedure to
be reimbursed,
VIN
QTY Lang. Customer Target market Plant Config moteur Model
S92J9G9775533 S92J9G9775631
4
E
NYCT
US
PLB
TD
60
S92J0H9776118 S92J0H9776118
1
E
US
PLB
TD
60
NYCT
S92J7H9776195 S92J6H9776379 41
E
US
PLB
TD
60
NYCT
E
US
TD
60
S92J5J9776380
S92J6J9776517
46
NYCT
PLB
S92J9J9776687
36
E
US
TD
60
S92J6J9776873
NYCT
PLB
S92J5K9777000 36
E
US
TD
60
S92J2J9776935
NYCT
PLB
E
US
TD
40
L82J8J9776445
L82J8J9776476
4
NYCT
PLB
L82J8K9777144 125
E
US
TD
40
L82J9J9776924
NYCT
PLB
L82JXK9777145 L82J5K9777277 121
E
US
TD
40
NYCT
PLB
L82J3K9776984
L82J3K9776984
1
E
US
TD
40
NYCT
PLB
Jean-Nicolas Fournier
NR
x
x
x
x
x
x
x
x
x
x
R1
Digitally signed by Jean-Nicolas Fournier
DN: cn=Jean-Nicolas Fournier, o=Nova Bus,
[email protected], c=CA
Date: 2020.08.26 11:36:40 -04'00'
Service Instruction
QJ 7621- 2021 - VIP Relay FAILURE
GENERAL INFORMATIONS
Document
REV
Date
Service repair procedure
NC
07-14-2020
Order Affected
L958
L959
LA23
LA73
LA76
LB29
LB59
LB78
LB99
LC32
Road Number
Customers
NYCT 60’
NYCT 60’
NYCT 60’
NYCT
NYCT
NYCT 60’
NYCT 60’
NYCT
NYCT 60’
NYCT
TOTAL
By
Alireza Jalali
Wilson Heras
QTY
4
1
46
4
125
36
41
1
36
121
415
SYSTEM and PARTS:
System Name
Option
Drawing
Part
VIP Relay
517101.841 , 517101.843 , 517101.959 , 517101.A73 , 517101.B29 , 517101.C78
517101NB92, 517101NB13, 517101NB14, 517101NB15, 517101NB111
N80973
Cause of Failure:
Since the customer installs the radio, we need to know how much harness is required to make good connections
without stressing the connectors. We will be following the bus until it is shipped to the customer. After receiving
information from the field, they need 8-9 inches of harness.
Our production line stated this has been a past issue and the BOM T008L was updated. It clearly states that 8 inches
of extra length from the face of the housing.
POTENTIAL IMPACT: Pulled wires/ bad connection
MATERIAL
Item
QTY
LEVEL 1
N/A
LEVEL 2 (20%)
1
1 / Bus
2
1 / Bus
SRT
PART NO
REV
G5007996
N80973
Type
Inspection
Installation
DESCRIPTION
REPLACES PART N°
Cable Tie
RELAY VIP ASSEMBLY NYCT
G5007996
N80973
Time
5 min
10 min
SPECIAL INSTRUCTION / IMPORTANTE NOTICE
No
1
2
3
Tools Needed:
Measuring tape
Cutters
Philips head screwdriver
DESCRIPTION / WORK INSTRUCTION
Step # 1:
Remove the 4 screws of the radio head using the Philips head screwdriver and remove the radio head.
Retain the hardware and radio head
Remove all 4
Screws of the
radio head
and pull the
head out
gently
Step # 2:
Perform a visual inspection of the VIP relay connector to confirm if the pins and wires are not pulled out of
the connector and the functionality of the radio is ok (ON). Also check the length of the VIP relay harness
from the head connectors to the base of the dash should be at least 8 to 9 inches long. If any of these 3
inspections fail, go to the step #3 if not go to the Step #9
Service Instruction
QJ#:7621-2021: VIP RELAY (NYCT)
Step # 3:
Disconnect VIP relay connector from the back of the radio head unit
Step # 4:
Remove the access panel by turning the two black knobs
Step # 5:
Cut the zip Tie (P/N G5007996) and pull the harness to achieve the required length (8 – 9 inches) from the
housing
Zip tie
G5007996
Service Instruction
QJ#:7621-2021: VIP RELAY (NYCT)
Step # 6:
Bundle the cables again with a new zip tie P/N G5007996
Zip tie
G5007996
Step # 7:
Connect VIP relay connector to the back of radio head unit
Step # 8:
Test the radio functionality (test PA system) if ok
Test radio PA system
1. Press PA
2. Press and talk on radio microphone
3. If your voice is heard all throughout the speakers the radio is working properly (ok )
Step # 9:
Re-install the radio head unit and secure the four screws
Step # 10:
Close the access panel and lock the knobs bus ok for service
Service Instruction
QJ#:7621-2021: VIP RELAY (NYCT)