Group 28 Troubleshooting
FMI Table
SAE Standard
FMI value SAE Text
0 Data Valid, but above normal operating range.
1 Data Valid, but under normal operating range.
2 Intermittent or incorrect data.
3 Abnormally high voltage.
4 Abnormally low voltage.
5 Abnormally low current or open circuit.
6 Abnormally high current or chort circuit.
7 Mechanical system no repsonse
8 Abnormal frequency or Pulse Width
9 Abnormal update rate
10 Abnormal change rate
11 Failure unkown
12 Bad device
13 Out of calibration
14 Special instruction (see Note)
Note: The special instruction FMI 14 is broadcast when the airbag has stored crash data.
Engine-specific for Injectors
FMI value Explanation
2 Short circuit to battery voltage, unit injector high side.
3 Short circuit to battery voltage, unit injector low side.
4 Short circuit to ground, unit injector high or low side.
5 Open circuit in the unit injector circuit.
Engine-specific for Injection Pump
FMI value Explanation
2 Short circuit to battery voltage, injection pump high side.
3 Short circuit to battery voltage, injection pump low side.
4 Short circuit to ground, injection pump high or low side.
5 Open circuit in the unit injection pump circuit.
6 Short circuit to ground, injection pump high side.
8 Injection pump current too high for long period of time.
87
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