GF54.21-P-6030TX Rear Sam Control Unit With Fuse and Relay Module, Component Description

GF54.21-P-6030TX Rear SAM control unit with fuse and relay module, component description

Component Identification:

Location
The rear SAM control unit is located at the rear left of the luggage compartment on the wheelhouse.

General
The rear SAM control unit is connected to the Controller Area Network bus class B (interior) (CAN-B) to allow data to be exchanged.

Task
The rear SAM control unit reads in the following components, sensors, pick-ups and switches, actuates their function, switch and controls illumination (if necessary) and actuates the following relays and consumers by means of semiconductor switches.

Controlling
^ Heated rear window
^ Exterior lighting at rear of the vehicle
^ Turn signal functions
^ Fuel gauge
^ Emergency opening of doors (in the event of a crash)
^ Trunk illumination
^ Rear head restraint lowering mechanism (RHR [KAF])
^ Trunk emergency release, with code (494) USA version
^ Roller blind for rear window, with code (540) Electric rear window roller blind
^ Anti-theft alarm system (ATA [EDW]), with code (551) Antitheft alarm system (ATA [EDW])

Discrete bidirectional interface to following components
^ Left antenna amplifier module (A2/64)

On vehicles with code (551) Anti-theft alarm system (ATA [EDW]):
^ Alarm signal horn with additional battery (H3/1)
^ ATA [EDW] inclination sensor (1333)

As of 1.7.06, the ATA [EDW] inclination sensor will no longer be fitted on vehicles with code (494) USA version or with code (498) Japan version.

Read-in of following sensor
^ Integrated crash sensor

Read-in of following sensors
^ Fuel level sensor, left half of tank (B4/1)
^ Fuel level sensor, right half of tank (B4/2)

Reading in the following switches:
^ Stop light switch (S9/1)
^ Left front door contact switch (S17/3)
^ Right front door contact switch (S17/4)
^ Left rear door contact switch (S17/5)
^ right rear door contact switch (S17/6)
^ Lock pawl rotary tumbler switch (S88/4)
^ Trunk lid external operation switch (S88/8)
^ Trunk lid emergency release switch (S88/10), with code (494) USA version
^ ATA [EDW] hood switch (S62), with code (551) Anti-theft alarm system (ATA [EDW]))

Switching the following relays
^ Relay 2, terminal 15R (N10/2kB)
^ Heated rear window relay (N10/2kE)
^ Relay 1, terminal 15R (N10/2kF)
^ Rear window roller blind relay (K74), with code (540) Electric rear window roller blind)
^ Fuel filler cap polarity reverser relay 1 (N10/2kG)
^ Fuel filler cap polarity reverser relay 2 (N10/2kH)

The fuel pump relay (N10/2kA) is located on the rear SAM control unit, but is actuated by the ME-SFI [ME] control unit (N3/10) (on vehicles with gasoline engine) or by the CDI control unit (N3/9) (on vehicles with diesel engine).

Switching consumers via semiconductor switches
^ Outer left turn signal lamp (E3e1)
^ Outer left Tail lamp, parking lamp, rear fog lamp (E3e2)
^ Left backup lamp (E3e3)
^ Left stop lamp (E3e4)
^ Inner left Tail lamp, rear fog lamp (E3e5)
^ Inner left turn signal lamp (E3e7)
^ Outer right turn signal lamp (E4e1)
^ Outer right Tail lamp, parking lamp, rear fog lamp (E4e2)
^ Right backup lamp (E4e3)
^ Right stop lamp (E4e4)
^ Inner right Tail lamp, rear fog lamp (E4e5)
^ Inner right turn signal lamp (E4e7)
^ Right luggage compartment lamp (E18/4)
^ Left luggage compartment lamp (E18/5)
^ Left license plate lamp (E19/1)
^ Right license plate lamp (E19/2)
^ center high-mounted stop lamp (E21)
^ Trunk lid CL motor (M14/7)
^ fuel filler flap CL [ZV] motor (M14/10)
^ Left rear head restraint motor (M53/1)
^ Right rear head restraint motor (M53/2)
^ Center rear head restraint motor (M53/3)
^ Rear roller blind motor (M24), with code (540) Electric rear window roller blind
^ Alarm signal horn with additional battery, with code (551)
^ Anti-theft alarm system (ATA [EDW])

On vehicles with code (494) USA version:
^ Left rear side-marker lamp (E6/3)
^ Right rear right rear side-marker lamp (E6/4)
^ Light emitting diode in trunk lid emergency release switch