The Engine Control Module (ECM) detects the following conditions: •Three attempts to complete an Eaton Top 2 shift were unsuccessful.•The “Transmission Style” is programmed to “Eaton Top 2”. Probable Causes: 1) ECM Connector/harness2) Shift solenoid failure3) Shift solenoid relay4) Wiring between shift solenoid and ECM5) Gear ratios are programmed incorrectly in the ECM CAT 3406E (Prefix 1MM or 2WS) Fault Code: 66 PID: SPN: 54 FMI: 6 Auxiliary Output #06 current high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 66 PID: SPN: 54 FMI: 5 Auxiliary Output #06 current low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 65...

The Engine Control Module (ECM) detects the following conditions: •Three attempts to complete an Eaton Top 2 shift were unsuccessful.•The “Transmission Style” is programmed to “Eaton Top 2”. Probable Causes: 1) ECM Connector/harness2) Shift solenoid failure3) Shift solenoid relay4) Wiring between shift solenoid and ECM5) Gear ratios are programmed incorrectly in the ECM CAT 3406E (Prefix 1MM or 2WS) Fault Code: 67 PID: SPN: 55 FMI: 5 Auxiliary Output #07 current low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 66 PID: SPN: 54 FMI: 6 Auxiliary Output #06 current high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 66...

The Engine Control Module (ECM) detects the following conditions: •Three attempts to complete an Eaton Top 2 shift were unsuccessful.•The “Transmission Style” is programmed to “Eaton Top 2”. Probable Causes: 1) ECM Connector/harness2) Shift solenoid failure3) Shift solenoid relay4) Wiring between shift solenoid and ECM5) Gear ratios are programmed incorrectly in the ECM CAT 3406E (Prefix 1MM or 2WS) Fault Code: 67 PID: SPN: 55 FMI: 6 Auxiliary Output #07 current high CAT 3406E (Prefix 1MM or 2WS) Fault Code: 67 PID: SPN: 55 FMI: 5 Auxiliary Output #07 current low CAT 3406E (Prefix 1MM or 2WS) Fault Code: 66...

The Engine Control Module (ECM) detects that the keyswitch was cycled at least three times within one second. This indicates that the battery circuit to the keyswitch has an intermittent condition or a low battery condition while the engine is running. Note: This code can be generated by rapidly cycling the keyswitch. Some control modules on the vehicle require this action in order to prompt flash codes. If this occurs, clear the logged diagnostic codes in order to prevent future confusion or an incorrect diagnosis. Note: This code can also be generated when there is an attempt to restart the...

The Engine Control Module (ECM) detects one of the following items after attempting to operate the injector: •A low current condition (open circuit) exists in the wiring for the cylinder injector solenoid.•A high current condition (short circuit) exists in the injector solenoid. Probable Causes: 1) ECM Connection/Harness2) Cylinder injector failure3) Injector solenoid failure4) Harness from ECM to valve cover connector5) ECM failure6) Injector harness under valve cover CAT 3406E (Prefix 1MM or 2WS) Fault Code: 71 PID: SPN: 43 FMI: 2 Key Switch Fault CAT 3406E (Prefix 1MM or 2WS) Fault Code: 68 PID: SPN: 191 FMI: 7 Transmission Not...