Overview:Fault Code 33 sets Active if battery voltage to the TECU falls below 7 volts for more than 1 second. Detection:The Transmission Electronic Control Unit (TECU) monitors the battery voltage supplied to the TECU after completing power up. Fault Code 33 sets Active if battery voltage to the TECU falls below 7 volts for more than 1 second. Fault Code 33 represents a more severe drop in battery voltage than Fault Code 34, Weak Battery Voltage Supply, which sets Active below 9 volts. Conditions to Set Fault Code Active:FMI 4 – Voltage Below Normal or Shorted Low: TECU monitors battery...

Overview:Fault Code 34 sets Active if battery voltage to the TECU falls below 9 volts for more than 10 seconds. Detection:The TECU monitors the battery voltage supplied to the TECU after completing the power-up sequence. Fault Code 34 sets Active if battery voltage to the TECU falls below 9 volts for more than 10 seconds. Fault Code 33, Low Battery Voltage Supply, represents a more severe drop in battery voltage than Fault Code 34. Conditions to Set Fault Code Active:FMI 14 – Special Instructions: TECU monitors the battery voltage of the vehicle. If the voltage falls below 9 volts for...

Overview:Fault Code 34 sets Active if battery voltage to the TECU falls below 9 volts for more than 10 seconds. Detection:The TECU monitors the battery voltage supplied to the TECU after completing the power-up sequence. Fault Code 34 sets Active if battery voltage to the TECU falls below 9 volts for more than 10 seconds. Fault Code 33, Low Battery Voltage Supply, represents a more severe drop in battery voltage than Fault Code 34. Conditions to Set Fault Code Active:FMI 14 – Special Instructions: TECU monitors the battery voltage of the vehicle. If the voltage falls below 9 volts for...

Overview:The J1939 Data Link is a Controller Area Network (CAN) communication bus. The Fuller Advantage transmission uses the J1939 Data Link to communicate with other ECUs (ABS, Engine, Body Controller, etc.). The Transmission Electronic Control Unit (TECU) sends and receives messages from other ECUs on the data link to determine when to initiate a shift, hold shifts, command engine torque to make shifts, as well as other functions. Proper operation of the J1939 Data Link is critical for shift performance. Fault Code 35 indicates an issue with communication across the J1939 Data Link. Detection:TECU has either lost communication or received...

Overview:The J1939 Data Link is a Controller Area Network (CAN) communication bus. The Fuller Advantage transmission uses the J1939 Data Link to communicate with other ECUs (ABS, Engine, Body Controller, etc.). The Transmission Electronic Control Unit (TECU) sends and receives messages from other ECUs on the data link to determine when to initiate a shift, hold shifts, command engine torque to make shifts, as well as other functions. Proper operation of the J1939 Data Link is critical for shift performance. Fault Code 35 indicates an issue with communication across the J1939 Data Link. Detection:TECU has either lost communication or received...