Can Communication Line Control
WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN H-line), it is possible to transmit a maximum amount of information with minimum wiring. Each control unit can transmit and receive data, and reads necessary information only.
- Fail-safe control
- When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control. After CAN communication returns to normal operation, it also returns to normal control.
- Operation of control parts by IPDM E/R during fail-safe mode is as follows:
FAIL-SAFE MODE DESCRIPTIONControlled system Fail-safe mode Headlamp - With the Ignition switch ON, the headlamp (low) is ON.
- With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps - With the ignition switch ON, the tail and parking lamps are ON.
- With the ignition switch OFF, the tail and parking lamps are OFF.
Cooling fan - With the ignition switch ON, the cooling fan HI operates.
- With the ignition switch OFF, the cooling fan stops.
Front wiper Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it was in just before fail-safe control was initiated. Heated mirrors Heated mirror relay OFF A/C compressor A/C compressor OFF Front fog lamps Front fog lamp relay OFF