Eaton DTC

EATON Transmission DTC & Troubleshooting

Retrieving Fault Codes

1. Place the shift lever in neutral.

2. Set the parking brake.

3. Turn the ignition key ON but do not start the engine. If the engine is already running,

you may still retrieve codes, however, do not engage the starter if engine stalls.

4. To Retrieve Active Codes: Start with the key in the ON position. Turn the key OFF

and ON two times within five seconds ending with the key in the ON position. After

five seconds, the gear display begins flashing two-digit fault codes. If there are no

active codes the gear display will show code 25. If there are inactive codes PD

(Product Diagnostic mode) will be displayed. The vehicle will not start in PD mode.

You must turn vehicle key OFF and allow the system to power down to exit PD mode

before restarting. To start engine turn key off and wait for the transmission to 

power down.

5. To Retrieve Inactive Codes: Start with the key in the ON position. Turn the key OFF

and ON four times within five seconds ending with the key in the ON position. After

five seconds, the gear display begins flashing two-digit fault codes. If no codes are

active, the gear display will flash code 25 (no codes).

6. Two digit fault codes will be displayed in the gear display. Record the codes. A one

or two second pause separates each stored code, and the sequence automatically

repeats after all codes have been flashed.

 

Clearing Fault Codes

 

1. Start with the key in the ON position. Turn the key OFF and ON six times within five

seconds, ending with the key in the ON position.

 Note: If the codes have been successfully cleared, the service lamp will come on

and stay on for five seconds.

2. Turn the key OFF and allow system to power down.

Fault Codes, Description

 

11 No ECU. Operation Test

12 Improper ECU Configuration

13 J1939 Control Device

14 Invalid Shift Lever Voltage

16 High Integrity Link

17 Start Enable Relay

25 NO CODES

26 Clutch Slip

27 Clutch Disengagement

28 Clutch System

31 Momentary Engine Ignition Interrupt Relay MEIIR

32 Loss of Switch Ignition Power Test

33 Low Voltage Supply

34 Weak Battery Voltage Supply

35 J1939 Communication Link

36 J1939 Engine Message Test

37 Power Supply

41 Range Failed to Engage

42 Splitter Failed to Engage Fault Codes Description

43 Range Solenoid Valve

44 Inertia Brake Solenoid Coil

45 Inertia Brake Performance

46 Splitter Solenoid Valve

51 Rail Position Sensor

52 Gear Position Sensor

56 Input Shaft Sensor

57 Main Shaft Sensor

58 Output Shaft Sensor

61 Rail Select Motor

63 Gear Select Motor

71 Unable to Disengage Gear

72 Failed to Select Rail

73 Failed to Select Gear

74 Engine Failed to Respond

75 Power Down in Gear

83 Shift Lever Missing

84 Shift Controller Device Not Configured

85 Shift Control Device Incompatible