Instruments (Operating Modes): Description and operation

The following warning lamps are available: l Left and right hand indicators (Green) l Headlamp main beam (Blue) l Glow plug (Amber) - Diesel models only l Seat belt (Red) - Selective markets only l SRS (Red) l Engine Malfunction Indicator Lamp (MIL) (Amber) - All markets except NAS l Service Engine Soon (MIL) (Amber) – NAS only l Anti-lock Braking System (ABS) (Amber) l Door open (Red) l Hazard warning (Red) l Hill descent control information (Green) l Hill descent control fault (Amber) l Handbrake and brake system (Red) l Low oil pressure (Red) l Ignition/No charge (Red) l Engine malfunction (Amber) - Diesel models only l Service Engine (Engine malfunction) (Amber) - NAS only l Overspeed (Red) - Selective markets only l Cruise control (Amber) - KV6 and Td4 JATCO automatic models only l Low fuel level (Amber) l Trailer lamp failure warning lamp (Red) l Electronic Traction Control (TC) fault (Amber) l Rear fog guard lamp (Red)

Operating Modes

The instrument pack will function in seven modes: l Shut down l Normal l Powered/Unpowered l Diagnostic l Crank l Standby normal l Low battery voltage.

Shut Down Mode The instrument pack enters shut down mode when the ignition is moved from position II to the off position (O). Ignition voltage is removed and only the permanent battery feed is available. All CAN gateway, diagnostic, instrument pack and warning lamp functions are suspended. Some conventionally wired warning lamps can still function in shut down mode, i.e.; hazard warning lamp.

When the instrument pack senses that the ignition supply has been removed, it can remain in normal mode for up to fifteen seconds to allow the microprocessor to power down. In shut down mode the total current draw for the instrument pack does not exceed 1mA.

Normal Mode The instrument pack enters normal mode when battery voltage from ignition switch position II is received. The ECM transmits a message for the CAN standard. If this message is correct or not received, the instrument pack remains in normal mode. If an incorrect CAN standard message is received, the instrument pack will enter standby normal mode.

Powered/Unpowered Modes Powered mode is the standard operational condition for the instrument pack. In this condition the pack receives a permanent 12V battery supply, no ignition supply or CAN messages. The microprocessor is also off but the real time clock will remain powered.

Unpowered mode is entered when the vehicle battery is disconnected. When the power supply is restored, the pack will resume powered mode.