UltraShift PLUS
TRTS0940 EN-US
|
July 2024 - A

Fault Code 75: Power Down in Gear

J1587: MID 130 SID 60 FMI 14

J1939: SA 3 SPN 560 FMI 14

Overview

The UltraShift PLUS Transmission Electronic Control Unit (TECU) monitors gear and rail position sensors to determine the position of the X-Y Shifter Shift Finger. Fault Code 75 indicates the transmission was powered down with the Shift Finger in a non-neutral gear position.

Detection

Ignition key is turned off with the X-Y Shifter Shift Finger in a non-neutral position.

Conditions to Set Fault Code Active

FMI 14 – Special Instructions: TECU detects a non-neutral gear position during power down.

Fallback

No fallback mode is associated with this fault.

Conditions to Set Fault Code Inactive

FMI 14: Fault code sets Inactive upon the next power-up cycle.

Possible Causes

FMI 14

  • Driver Behavior
    • Driver turned the ignition off with the transmission in a non-neutral state
  • Vehicle Ignition Supply
    • Unintentional loss of ignition supply to TECU

Component Identification

None

Fault Code 75 Troubleshooting

A
Purpose:Check for Active or Inactive fault codes.

  1. Record the transmission fault codes, FMIs, occurrences, and timestamps from the Service Activity Report created during the Diagnostic Procedure.

  • If a fault code other than 75 sets Active, troubleshoot per Fault Code Isolation Procedure Index.

  • If Fault Code 75 is Inactive, no action necessary. This code indicates the driver powered down the system before selecting neutral. Test complete.