Stop/Start System Control Circuit (Freelander 2)

New software has been added to the ECM to control the automatic Stop/Start system because the automatic Stop/Start system is linked to many other vehicle systems in addition to its own components. Complex technology connects these systems, and many of the signals used in the Stop/Start system are transmitted to the ECM and via the CJB, which also has updated software. The control logic for preventing the engine from shutting down during the Start/Stop cycle is located in the CJB. The CJB also acts as a gateway, transmitting this information to the ECM via the medium- and high-speed CAN buses.

Eight wiring harnesses were modified to accommodate the Stop/Start system.

Automatic Stop/Start system control diagram:

NOTE: A = Wired connection; D = High Speed CAN Bus; N = Medium Speed CAN Bus; O = LIN Bus; AC = diagnostic channel.

Pos.	Spare part number	Name
1	-	Brake booster vacuum sensor
2	-	Engine Control Module
3	-	Neutral gear sensor
4	-	Battery Distribution Box
5	-	Additional coolant pump*
6	-	Starter
7	-	Descent control switch
8	-	Driver's seat belt switch
9	-	Driver's door open warning switch
10	-	Linear Clutch Switch
11	-	Upper Clutch Pedal Switch
12	-	Lower clutch pedal switch
13	-	Voltage Quality Control Module
14	-	Stop/Start switch and LED status indicator
15	-	Central distribution box
16	-	Passive safety system control unit
17	-	Terrain Response Control Unit
18	-	ABS (anti-lock braking system) unit
19	-	Wheel speed sensor
20	-	Hood open warning switch
21	-	Battery monitoring system module
22	-	Automatic temperature control unit
23	-	Instrument panel
24	-	Trailer block
25	-	Fuel fired auxiliary heater (if equipped)
26	-	Additional coolant pump**

* Vehicles without additional fuel-fired heater.
** Vehicles with additional fuel-fired heater.