K Series
K Series vehicles are fitted with a single cooling fan, which is mounted on the rear face of the radiator. Operation of the single speed cooling fan is controlled by the Engine Control Module (ECM) via the cooling fan relay.
Note. Vehicles fitted with Air Conditioning (A/C) are also fitted with a condenser fan and a cooling fan control unit. For more information, refer to ' AIR CONDITIONING (A/C) - K SERIES AND KV6 ' section of this article.
+ AIR CONDITIONING (A/C) - K SERIES AND KV6.
The cooling fan will also operate after the ignition has been switched off to control rising engine bay temperatures after the engine has stopped running.
KV6 and Td4
KV6 and Td4 vehicles are fitted with a fan to control the temperature within the E-box. If the temperature within the E-box reaches 35°C (95°F), the fan operates until the temperature drops to 27°C (80°F).
For information on cooling fan operation, refer to AIR CONDITIONING (A/C) - TD4 , AIR CONDITIONING (A/C) - K SERIES AND KV6 , or Air Conditioning (A/C) - KV6 (North America) section of this article.
Td4
Feed from the positive battery terminal (C0192) is supplied to fusible link 1 and the main relay (C0632) on an R wire. Both are located in the engine compartment fuse box. Operation of the main relay (C0576) is controlled by the Engine Control Module (ECM) (C0603) on a WK wire. The energized main relay provides a feed to fuse 4, which is also located in the engine compartment fuse box. Fusible link 1 is connected in series with fusible link 7. Fusible link 7 provides a constant battery feed to the starter relay, which is also located in the engine compartment fuse box.
Operation of the starter relay (C0576) is controlled by the ECM (C0059) on an RW wire. The relay coil (C0576) is earthed on a B wire. The energized starter relay (C0572) provides a feed to the E-box fan (C0646) on an NR wire.