gf2760p9900a

Limp-home mode, basic function

Type gf · topic 27.60 · version 0104 · 2020-06-23

Applies to: Model all with transmission 700.4, 724.0/1

Where it sits

Function group 2 Chassis › 27 Automatic transmission › 27.60 Gearshift, control — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

EinPAS 17 Drivetrain/axle › 17.35 Shift mechanism/gear control › 17.35.1 Basic information — Series 900 (models 9**) · Series 902 (models 9**) · Series 904 (models 918, 919, 924, 925, 938, 943, 957) · Series 906 (models 917, 918, 924, 953)

Also applies to engines/gearboxes: 139 ***, 254 ***, 256 ***, 272 ***, 276 ***, 282 ***, 457 9**, 541 9**, 542 9**, 608 ***, 700 4**, 700 420, 700 421, 700 422, 700 423, 715 3**, 715 5**, 722 6**, 722 9**, 724 ***, 724 0**, 724 033, 724 044, 724 045, 724 1**, 724 103, 724 114, 724 115, 724 120, 725 ***, 725 0**, 725 035, 725 037, 725 038, 725 085, 725 1**, 739 390, 739 391, 739 395, 739 396, 739 397, 739 398, 739 399, 740 698, 743 3**, 743 4**, 743 498, 746 971, 924 9**, 924 910, 925 9**, 926 9**

GF27.60-P-9900A

Limp-home mode, basic function

22.06.2020

Model

all with transmission 700.4, 724.0/1

Overview

This document contains information on:

General

Function

General

The fully integrated transmission control electrohydraulic controller unit or the dual-clutch transmission control unit switches to the limp-home mode when individual components malfunction.

Function

The dual-clutch transmission control unit or the fully integrated transmission control electrohydraulic controller unit uses sensors to monitor the status of the transmission control, using e.g. pressure and temperature sensors. If a shifting-relevant component part is defective or if it can no longer be actuated, the corresponding sub-transmission is no longer available. The driver is notified of a malfunction visually and acoustically on the instrument cluster. Shifting comfort is restricted or driving is no longer possible.

Function schematics

Function schematic for limp-home mode

Model all with transmission 700.4, 724.0/1

PE27.19-P-2502-97A

Detailed information

Limp-home mode, detailed information

Transmission 724.033/044/045

GF27.60-P-2500A

Transmission 700.420/421/422/423

GF27.60-P-2500B

Transmission 724.103/114/115/120

GF27.60-P-2500C

Referenced documents