NHTSA ID Number: 10054544
Manufacturer Communication Number: IB-12-N-001-A
TSB/Document Date: 2014-02-03
Summary
ISUZU
: SOME VEHICLES MAY EXPERIENCE A NO CRANK, NO START, NO TOOL COMMUNICATION CONDITION IN EXTREMELY COLD WEATHER SITUATIONS. THIS FAILURE MAY BE CAUSED BY A STUCK ECM MAIN RELAY (X-30). ALSO INCLUDED MODEL N-SERIES MODEL YEAR 2014-2015. *JS UPDATED 04/23/2014 *JS UPDATED 11/14/14. *PE
SB-10054544-6156
BULLETIN NUMBER:
IB12-N-001B
Information Bulletin
ISSUE DATE:
FEBRUARY 2014
GROUP:
ELECTRICAL
No Crank/No Start, No Scan Tool Communication - Extreme Cold Weather
AFFECTED VEHICLES
2007 - 2009 Chevrolet
or GMC
W3500/W4500/W5500
2007 - 2015 Isuzu
NPR/NPRHD/NQR/NRR
SERVICE INFORMATION
AFFECTED VEHICLES
• 2007-2015MY Isuzu
N-Series Equipped with 5.2L (4HK1) Diesel Engine and Diesel Particulate Filter (DPF)
This bulletin supersedes IB12-N-001A. This bulletin is being revised to update Model Years. Please discard bulletin
IB12-N-001A.
INFORMATION
This bulletin applies to specific regions in Canada and Alaska where ambient daytime temperatures can drop below
-20 degrees C.
Some customers may experience a no crank/no start condition when ambient temperatures drop to or below -20 degrees C.
Vehicles equipped with Multi Information Display (MID) will show the error code P1464. In most cases, this condition is the
result of a stuck ECM Main Relay (X-30). This condition can be confirmed by connecting IDSS. If IDSS cannot communicate
with the vehicle, the ECM has not powered up due to the frozen X-30 Relay.
Note: If IDSS communicates normally, it is not a frozen relay. Follow normal diagnostics to correct the concern.
Isuzu
is happy to announce the availability of a new relay with improved performance for this condition. Installation of the new
relay requires a small modification to the relay box cover. Follow the service procedure provided in this bulletin to properly install
this new relay.
SERVICE INFORMATION
1. Remove relay box cover.
2. Remove the original ECM Main Relay in location X-30.
3. Install the new relay at location X-30.
4. Locate the relay box cover rib as shown in figure 1.
5. Trim the relay cover rib approximately 3 mm to provide clearance for the new relay.
6. Install the relay cover and confirm it seals properly. If the cover does not close properly, trim additional material
from the cover until it seals.
PARTS INFORMATION
Parts can be ordered from American Isuzu
Parts Distribution Network (AIPDN).
Part Number
8-98167-260-0
Description
Relay
Qty
1
WARRANTY INFORMATION
For vehicle repaired under warranty, use the labor operation code provided below.
Operation
Code
N2821
N2827
Description
Labor Time
Relay – Fuel System –
Replace
See
Published
Labor Time
See
Published
Labor Time
Powertrain System –
Replace
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TSB/Document ID: IB-12-N-001-A
Replacement Service Bulletin Number: IB-12-N-001-C
MFR Communication Date: 2014-08-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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