The Engine Control Module (ECM) detects the following conditions:
•A timing calibration has been successfully completed.
•The primary engine speed/timing sensor and the secondary engine speed/timing sensor are off by more than three degrees.
Probable Causes:
1) Cluster gear is not properly aligned or it has damage
2) If cylinder head was removed, backlash for camshaft be out of spec
3) Engine speed sensors not installed properly
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 41 PID: SPN: 84 FMI: 0 Vehicle Overspeed Warning
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 38 PID: SPN: 105 FMI: 4 Intake Manifold Air Temperature voltage low
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 38 PID: SPN: 105 FMI: 3 Intake Manifold Air Temperature voltage high
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 36 PID: SPN: 84 FMI: 10 Vehicle Speed signal rate of change
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 36 PID: SPN: 84 FMI: 8 Vehicle Speed signal out of range
CAT 3406E (Prefix 1MM or 2WS) Fault Code: 36 PID: SPN: 84 FMI: 2 Vehicle Speed signal invalid
