Diesel Data: Automotive Repair

Information Bus: Description and Operation






Multiplex Integrated Control System (MICS) Description - Functional Control

Power Supply Voltage Monitoring Function

The MICU monitors the power supply voltage (back-up voltage). If the voltage drops below 10 V, the MICU does not store DTCs.





Entry Lights Control System (Ceiling Lights, Map Lights, Ignition Key Light)

The MICU controls the interior light and ignition key light ON/OFF based on input signals from each switch.





Trunk Light

The MICU controls the trunk light based on input signal from trunk lid latch switch.





Collision Detection Signal (CDS)

The MICU controls the door lock actuators based on IG1 and SRS (CDS) inputs.





Key Interlock (A/T)

The MICU controls the key interlock solenoid based on ignition switch ACCESSORY (I) position, the transmission range switch P position, and the park-pin switch inputs.





Combination Light Switch

The MICU controls the lighting system based on inputs from the combination light switch.





Daytime Running Lights

The MICU controls the headlights as daytime running lights based on inputs from each switch.





Fog Lights

The MICU controls fog lights based on inputs from the fog light switch.





Headlight Auto-OFF Function*

The MICU controls the lighting system based on inputs from each switch.










Turn Signal/Hazard Warning Lights

The MICU controls the turn signal/hazard warning lights based on inputs from the turn signal switch and the hazard warning switch.





Wiper*

The MICU controls the wiper based on inputs from each switch.










Driver's Power Window Relay

The MICU controls the power windows based on inputs from each switch.





Keyless Answer Back

The MICU controls the lighting system and horns based on keyless signals sent by the B-CAN data.





Security Answer Back

The MICU controls the lighting system and horns based on keyless signals sent by the B-CAN data.





Answer Back Response Operation

The MICU controls the lighting system and horns based on keyless signals sent by the B-CAN data.





Power Door Locks

The MICU controls the door lock actuators based on the inputs from each switch.





Door Lock Response Operation

The MICU controls the door lock actuators LOCK, UNLOCK, DRIVER'S UNLOCK, TRUNK UNLOCK based on the B-CAN door lock switch signals.





Keyless Entry System

The MICU controls the door lock actuators based on inputs from each switch.





Keyless PANIC Operation

The MICU controls the keyless PANIC operation based on keyless signal sent by the B-CAN data.





Auto Power Door Locks (LOCK Operation)*

The MICU controls the door lock actuators based on inputs from each switch.










Auto Power Door Locks (UNLOCK Operation)*

The MICU controls the door lock actuators based on inputs from each switch.










Security Alarm System

The MICU controls the lighting system and horns based on inputs from each switch and the B-CAN data.





Automatic Lighting System

The MICU controls the automatic lighting system based on inputs from each switch and B-CAN data.