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Interior Illumination




INTERIOR ILLUMINATION

DESCRIPTION

General
Operation of the interior illumination LED's and lamps is controlled by the Light Check Module (LCM). The LCM is located at the base of the RH 'A' post, and powers the LED's and lamps when the ignition switch is in either the auxiliary or ignition position, and the lighting switch is in either the side or headlamp position.

OPERATION

Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 3, fusible link 4, and fuse 53 of the passenger compartment fuse box (C0632) on an R wire. Fusible link 3 (C0589) and fusible link 4 (C0590) provide constant battery feeds to the LCM on R wires.

Fuse (C0585) provides a constant battery feed to the ignition switch (C0028 on V8 vehicles) on an R wire. When the ignition switch is turned to the 'auxiliary' position, current flows across the switch (C0028 on V8 vehicles) to fuse 9 of the passenger compartment fuse box (C0585) on a PB wire. Fuse 9 (C0587) provides an auxiliary ignition feed to the LCM (C2040) on a PY wire.

When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0028 on V8 vehicles) to fuse 4 of the passenger compartment fuse box (C0585) on a G wire. Fuse 4 (C0587) provides an ignition feed to the LCM (C2040) on a GS wire.

Lighting Switch
The LCM (C2040) monitors the condition of the fascia mounted rotary lighting switch (C0041) by providing a feed on an NB wire. When the lighting switch is turned to the side lamp position, it returns a feed to the LCM (C2040) on a Y wire. When the lighting switch is turned to the headlamp position, it returns a feed to the LCM (C2040) on a B wire.

Light Check Module (LCM)
When the LCM (C2039) senses that the ignition switch is in either the auxiliary or ignition position, and the lighting switch is in either the side or headlamp position, it provides a feed to the following lamps on SR wires:
- RH inner face level air vent illumination (Cl295)
- RH outer face level air vent illumination (C1200)
- LH inner face level air vent illumination (C1294)
- LH outer face level air vent illumination (C1199)
- Clock illumination (C0232)
- Rear heater illumination (C0846)
- Sunroof switch illumination (C0363)
- Automatic Temperature Control (ATC) control panel (C1629)
- Emergency switch illumination (C2082)
- Instrument pack illumination (C0230)
- Hazard warning switch illumination (C0096)
- Centre console switch pack illumination (C0700)
- Radio remote display illumination (C0241)
- Multi Function Display (MFD) illumination (C0816)
- Radio/cassette player illumination (C0098)
- Rear radio illumination (C0818)
- LH rear window switch illumination (C0732)
- RH rear window switch illumination (C0732)


NOTE: The LH and RH rear window switches have the same connector number as they utilise the same harness.


- Air suspension ride height switch illumination (C2186)
- Drivers door module illumination (C2058)
- Passenger door module illumination (C2057)
- Front cigar lighter (C0074)
- Rear cigar lighter (C1596)
- Ashtray illumination (C2322)
- RH seat heat switch (C3401)
- LH seat heat switch (C1403)
- Automatic transmission selector indicator illumination (C0245)
- Telephone eject box illumination (C7252).

All the above are earthed on N wires. The LCM also provides a feed to the following LED's on SR wires:
- Front interior lamp LED's (C0355)
- Rear interior lamp LED (C0357)
- RH rear door handle LED (C2335)
- LH rear door handle LED (C2335)


NOTE: The LH and RH rear door handle LED3 have the same connector number as they utilise the same harness.


All the above are earthed on N wires.

Drivers Door Module
When the drivers door module (C2058) receives an illumination feed from the LCM, it illuminates the following LED's by providing a feed on SR then SU wires:
- Drivers door interior handle LED
- Door pocket front LED
- Door pocket rear LED.

Passenger Door Module
When the passenger door module (C2057) receives an illumination feed from the LCM, it illuminates the following LED's by providing a feed on SR then SU wires:
- Passenger door interior handle LED
- Door pocket front LED
- Door pocket rear LED.
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