REHS8727

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Special Instruction
SART Module Diagnostic Procedure for Certain On Highway Trucks{7000}
Media Number -REHS8727-00
Publication Date -23/09/2013
Date Updated -23/09/2013
i05453512
SART Module Diagnostic Procedure for Certain On Highway
Trucks{7000}
SMCS - 7000
On Highway Truck:
CT660 (S/N: TGA1-UP; TGD1-UP; TJD1-UP; TEJ1-UP; TRK1-UP; TKL1-UP; TEM1UP; TEP1-UP; TGR1-UP; TGS1-UP; TJS1-UP; TGT1-UP; TGW1-UP; TSW1-UP; TEY1
-UP; TSY1-UP; TEZ1-UP; TGZ1-UP)
Introduction
The technician may notice that a code below is active or inactive. The customer might not mention a
warning light for this code alone. Diagnostic Information and procedures for the Stand Alone Real
Time clock (SART) module-related codes are explained in this Special Instruction.
SART Diagnostic Procedure
Table 1
Possible Diagnostic Trouble Codes
SPN
FMI
Module
Description
251
19
ECM
ECM not detecting CAN message for real-time clock
524285
14
SART
Unknown Fault
The Status of the fault (whether the code is active or inactive) will determine the troubleshooting
steps.
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Advanced Full Text Search - REHS8727 - SART Module Diagnostic Procedure for Certai... Page 2 of 2
1. Open Engine Diagnostics and check to see if the code is active.
2. Use the datalink sniffer in Engine Diagnostics to see if the SART module is communicating.
If the code is active, and the SART is communicating, follow the steps below:
Check Status of RTC and Resync
1. If the clock resyncs, the code clears and does not return, release the vehicle to customer.
2. If the code will not clear, but the module is communicating, the module will need to be
replaced.
3. If the module is not communicating, check for power, ground, and datalink to the module.
If the code is inactive, follow the steps below:
Datalink Troubleshooting
1. Check power, ground, and datalink to module.
2. If no trouble is found, clear the code and release the truck to the customer.
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