Scania ALLISON DTC 394240 Control module for RAM memory

ALLISON Allison automatic gearbox · Scania · 2 variants

Code 394240 (decimal). Some diagnostic tools show it in hexadecimal as 060400.

In short

The control unit has detected that the memory pattern written to the control unit during the test is not the same as the memory pattern from the TCM.

Variant 1

Applies to: A5

What does Scania ALLISON fault code 394240 mean?

The control unit has detected that the memory pattern written to the control unit during the test is not the same as the memory pattern from the TCM.

What causes Scania DTC 394240?

- The self-test of the memory area failed during TCM start-up.

How does the system react?

A yellow warning indication is displayed. The fault code is stored in the memory. The control unit returns to the boot software. The control unit prevents a gear being engaged.

How to fix Scania ALLISON fault code 394240?

  1. Renew the control unit.
  2. Contact an Allison dealer.

Variant 2

Applies to: A6

Detection

The control unit has detected that the memory pattern written to the control unit during the test is not the same as the memory pattern from the TCM.

Possible cause

- The self-test of the memory area failed during TCM start-up.

System reaction

A yellow warning indication is displayed. The fault code is stored in the memory. The control unit returns to the boot software. The control unit prevents a gear being engaged.

How to fix

  1. Renew the control unit.
  2. Contact the Allison dealer.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.