Instrument Panel, Gauges and Warning Indicators: Description and Operation

INSTRUMENTS

DESCRIPTION

General
The instrument pack is a totally electronic controlled device receiving electrical signals from sender units, and CAN messages from the Engine Control Module (ECM), the ABS ECU, the Electronic Automatic Transmission Electronic Control Unit (EAT ECU) and the cruise control interface unit (Td4 vehicles only). The instrument pack transposes these via a microprocessor into analogue gauge read out and warning lamp illumination.

The warning lamps illuminate in one of four colours, which indicate the level of importance of the warning as follows:
^ Red = Warning.
^ Yellow = Caution.
^ Green = System operative.
^ Blue = Headlamp main beam operative.

OPERATION

General
Feed from the positive battery terminal (C0192) is supplied to the following (C0632) on an R wire:
^ Fuse 7
^ Fusible link 12
^ Fusible link 9
^ Fusible link 4
^ Fusible link 3

Fuse 7 (C0576) provides a constant battery feed to the hazard warning relay located in the passenger compartment fuse box (C0581) on an NO wire.

Fusible link 12 (C0575) provides a constant battery feed to the lighting switch (C0041) on an RN wire.

Fusible link 9 (C0570) is connected to the main/dipped beam relay and fuse 22 of the passenger compartment fuse box (C0587) by an N wire. Fuse 22 provides a constant battery feed to the rear fog lamp relay, which is also located in the passenger compartment fuse box.