Operation

EAT Operation

Gearbox solenoid valve block
The gearbox solenoid valve block is connected to the EAT ECU as follows:
^ ECU pin C0193-5 on an OG wire to gearbox solenoid pin C0543-H. This provides an output to the pressure regulator solenoid valve.
^ ECU pin C0193-43 on an R wire to connector interface C0728-2/C0678-2 and from the interface to the gearbox solenoid pin C0243-E on an OK wire. This receives a positive input from the gearbox output shaft speed sensor.
^ ECU pin C0193-14 on a B wire to connector interface C0728-1/C0678-1 and from the interface to gearbox solenoid pin C0243-F on an OB wire. This receives a negative input from the gearbox output shaft speed sensor.
^ ECU pin C0193-30 on an OP wire to gearbox solenoid pin C0243-B. This provides an output for the shift control solenoid valve (MV1)
^ ECU pin C0193-33 on an OW wire to gearbox solenoid pin C0243-K. This provides an output for the shift control solenoid valve (MV2).
^ ECU pin C0193-32 on an SO wire to gearbox solenoid pin C0243-M. This provides an output to the converter lock-up solenoid valve (MV3).
^ ECU pin C0193-53 on an OLG wire to gearbox solenoid pin C0243-L. This provides an output for power supply to the solenoid valves.

Starter/inhibitor/reverse light switch
The starter/ inhibitor/reverse light switch is connected to the EAT ECU as follows:
^ ECU pin C0193-7 on a UG wire, via header C0724, to starter/inhibitor/reverse light switch pin C0675-37. This receives an input from the switch Y contacts. The input is also supplied via header C0724 10 the BCU pin C0662-6.
^ ECU pin C0193-36 on a UP wire, via header C0724, 10 starter/inhibitor/reverse light switch pin C0675-9. This receives an input from the switch W contacts. The input is also supplied via header C0724 to the BCU pin C0662-9.
^ ECU pin C0193-8 on a UB wire, via header C0724, to starter/inhibitor/reverse light switch pin C0675-10 This receives an input from the switch X contacts. The input is also supplied via header C0724 10 the BCU pin C0662-13.
^ ECU pin C0193-9 on a UW wire, via header C0724, to starter/inhibitor/reverse light switch pin C0675-6. This receives an input from the switch Z contacts. The input is also supplied via header C0724 to the BCU pin C0663-7.

The starter/inhibitor/reverse light switch pin C0675-4 is connected on a B wire, via splice SJ2, to earth header C0552.

The starter/inhibitor/reverse light switch pin C0675-1 is connected on a GN wire, via header C0287 LHD/C0294 RHD, to the BCU pin C0661-8

The starter/inhibitor/reverse light switch pin C0675-8 is connected on an NP wire to BCU pin C0663-10.

The starter/inhibitor/reverse light switch pin C0675-5 is connected on a BG wire, via splice joint A31 (and header C0294 LHD/C0287 RHD Td5 only), to BCU pin C0663-11.

On Td5 engine vehicles only, the starter/inhibitor/reverse light switch is connected from pin C0675-5, through splice joint A31 to connector interface C0681-10/C0668-10 on a BG wire. From the interface the connection continues on a BW wire, via header C0294 LHD/C0287 RHD to the ECM pin C0658-35.

Automatic transmission selector lamp
The automatic transmission selector lamp is connected to the BCU as follows:
^ BCU pin C0662-22 on an RG wire to automatic transmission selector lamp pin C0245-6
^ BCU pin C0662-23 on an RS wire to automatic transmission selector lamp pin C0245-5
^ BCU pin C0662-24 on an RK wire to automatic transmission selector lamp pin C0245-4
^ BCU pin C0662-25 on an RP wire to automatic transmission selector lamp pin C0245-3.
^ BCU pin C0662-26 on an RY wire to automatic transmission selector lamp pin C0245-12.
^ BCU pin C0662-8 on an RU wire to automatic transmission selector lamp pin C0245-11
^ BCU pin C0662-9 on an RW wire to automatic transmission selector lamp pin C0245-10

The automatic transmission selector lamp pin C0245-9 is connected on a GLG wire to the IDM in the passenger compartment fusebox.

The automatic transmission selector lamp pin C0245-7 is connected on a UO wire to the EAT ECU pin C0193-45.

The automatic transmission selector lamp pin C0245-1 is connected on a B wire to earth header C0708.

Instrument pack
The instrument pack pin C0230-5 is connected on a YG wire to the EAT ECU pin C0193-51. This connection operates the manual mode lamp in the instrument pack.

The instrument pack pin C0230-4 is connected on a YR wire to the EAT ECU pin C0193-25. This connection operates the sport mode lamp in the instrument pack.

The instrument pack pin C0233-16 is connected on an SK wire via header C0293 LHD/C0292 RHD to the IDM in the passenger compartment fusebox. This connection is the serial data bus and supplies gear position data from the selector indicator, via the IDM, to the instrument pack.

Diagnostic socket
The diagnostic socket pin C0040-7 is connected on a K wire, via header C0286, to the EAT ECU pin C0193-31.

Engine Control Module (ECM)
The EAT ECU pin C0193-16 is connected on a W wire to ECM pin C0637-36 V8/C0158-35 Td5.

The EAT ECU pin C0193-44 is connected on a Y wire to ECM pin C0637-37 V8/C0158-32 Td5.

EAT ECU
EAT ECU pin C0193-13 is connected to the transmission high/low switch by an RK wire. When the transfer box is in low range the switch is closed and connects the RK wire to earth on a B wire through splice SJ2 and earth header C0552

The EAT ECU is connected on B wires from pins C0193-6 and C0193-28 to earth header C0708.