AFR200 Series, Product User Guide
This document is subject to change without notice.
Caution: None of GAC products are flight certified controls including this item
Copyright © 2010, Governors America Corp., All Rights Reserved
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PUG4144 D
10.2 Fault / Warning Blink Codes
The AFR has a simplified blink code system, to examine the history log, in the event a computer is not available.
To display the history of blink codes:
•
Power off the AFR.
•
Power on the AFR, without the engine running.
•
The fault LED will blink through the entire fault history in reverse chronological order (newest code first,
oldest last).
•
Once the AFR has reached the end of the list, it will stop flashing the fault codes.
The fault history log can be cleared on SmartVU’s diagnostic screen. The following table provides the list of valid
blink codes.
AFR Fault Indication Blink Codes
Count Alarm/Warning
1
O2 Sensor Circuit No Activity Detected
2
Engine Speed Input Circuit No Signal
3
Engine Overspeed Condition
4
Engine High Temperature Condition
5
Engine Oil Pressure Too Low
6
Not Used
7
Catalyst System Efficiency Below Threshold
8
Manifold Absolute Pressure Circuit Low Input
9
Manifold Absolute Pressure Circuit High Input
10
Exhaust Gas Temperature Too High
10.3 Diagnostic Information
The AFR diagnostics features both run timers and fault code(s) readout.
10.3.1 Timers
The Timers window logs total run time of the engine and the AFR control device as well as maintenance timers for
the engine and the applicable sensors. Further information is provided in the SmartVU product user guide.
10.3.2 AFR Diagnostic Trouble Code Information
The AFR stores a chronological list of accumulated trouble codes. The AFR communicates malfunctions through
this part of the interface with OBDII P-codes and GAC G-codes. The P-codes relay engine and sensor
malfunctions as well as decreases in system performance. These issues may cause poor fuel consumption and
excessive emissions output as well as potential engine failure. The AFR will also flag the Check Engine warning
flag or Engine Shutdown indicator in the event a GAC J1939 display device (JDR) is used.
The G-codes pertain to exceeded safety parameters and general setting changes which log the calibration and
run history of the engine and control unit. Codes can be scanned real time while the engine is running. Further
information regarding the diagnostics screen is available in the SmartVU product user guide.
The following tables provide the Diagnostic Trouble Codes (DTC) / P-codes that the AFR supports:
