General
The Automatic Temperature Control (ATC) system is controlled by the ATC ECU, which is located behind the center console. ATC features automatic control of a common temperature setting for both sides of the passenger compartment, with manual control of the blower speed, air recirculation, and air distribution.
A Fuel Burning Heater (FBH) is fitted as standard on Td6 vehicles, and as an option on V8 vehicles. For more information on FBH operation, refer to FUEL BURNING HEATER (FBH) - V8 .
For more details on ATC operation, refer to AIR CONDITIONING - COMPONENT LOCATIONS .
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to the following on an R wire
z Maxi fuse 61.
z Maxi fuse 64.
z Fuse 12.
z Fuse 53.
All are located in the passenger compartment fuse box (C0632). Maxi fuse 61 (C0581) provides a constant battery feed to the cooling fan control unit (C0005) on an RU then U wire. Maxi fuse 64 (C0580) provides a constant battery feed to the blower motor control unit (C2281) on an RU then YG wire.
Fuse 12 (C0586) provides a constant battery feed to the ATC ECU (C1630) on an RP wire.
The ATC ECU (C1630) is earthed on an N wire.
Fuse 53 (C0583) provides a constant battery feed to the ignition switch (C0099 on Td6 vehicles, C0028 on V8 vehicles) on an R wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0099 on Td6 vehicles, C0028 on V8 vehicles) to fuse 34 of the passenger compartment fuse box (C0585) on a G wire. Fuse 34 (C0587) provides an ignition feed to the ATC ECU (C1629) on a GY wire.