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Automatic Transmission/transaxle External Controls: Overview Jaguar XJ X351

Automatic Trans 1 illustration ~154 words

OVERVIEW

The external controls for the transmission consist of a JaguarDrive selector, two paddle switches and an emergency park release.

The JaguarDrive selector transmits driver transmission selections to the transmission control module (TCM). The paddle switches can be used to initiate gear changes, with the JaguarDrive selector in either the D or S position, causing a change of operating mode from automatic gear selection to manual gear selection. The emergency park release ensures the transmission is kept in neutral during vehicle recovery operations.

Four additional switches adjacent to the JaguarDrive selector control the JaguarDrive control functions. Refer to: Ride and Handling Optimization (204-06, Description and Operation).

SYSTEM OPERATION AND COMPONENT DESCRIPTION

Note. A = Hardwired; D = High speed controller area network (CAN) bus; O = local interconnect network (LIN) bus.

Scheme 51

Scheme 51: SYSTEM OPERATION AND COMPONENT DESCRIPTION
Item NumberDescription
1Battery
2BJB (battery junction box) (250 A megafuse)
3EJB (engine junction box)
4JaguarDrive selector
5TCM (transmission control module)
6Upshift paddle switch
7Downshift paddle switch
8Steering wheel RH switchpack
9Instrument cluster
10CJB (central junction box)
11Clockspring

PRINCIPLES OF OPERATION

For a detailed description of the transmission external controls, refer to EXTERNAL CONTROLS