HEVAC System Interface - From 99MY

The diagnostics for the condenser fans and A/C grant signal is disabled and so it is not possible to detect open and short circuit conditions on these lines.

The condenser fans can be switched on by either the HEVAC ECU or the engine management ECM (to assist engine cooling) or by the fan control logic.

See HEATING AND VENTILATION, Description and operation.

See AIR CONDITIONING, Description and operation.