Construction Diagram: Notes

WARNING: This page is about a different variant/trim than selected.

Fig 1: WCM Construction Diagram

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Main components and functions

COMPONENTS AND FUNCTIONS CHART

Parts name

Functional description

Wireless control module (WCM)

Controls the keyless entry functions, TPMS functions and starting of the engine by using the following communications.

Communications with ETACS-ECU, ECM, ABS-ECU and combination meter via CAN
Wire communication with the steering lock unit
Wireless communication with the ignition key
Wireless communication with the TPMS transmitter

Ignition key

The ignition key receives signals sent from WCM, certifies the key ID, calculates the key ID, and sends the reply data signal to WCM. The ignition key also sends signals to WCM when the lock/unlock button and panic button on it are operated.

Combination meter (Multi information display, TPMS warning light)

Communicates with WCM via CAN. Send ignition switch status. Receives the warning request or warning information from WCM, activates⁽¹⁾⁽²⁾ the TPMS warning light. Warning symbol and message is additionally displayed on the Multi information display.

ETACS-ECU

Communicates with WCM via CAN. Receives the door lock/unlock request from WCM, outputs the lock/unlock signal and flashes the turn signal light to inform the driver that the doors are locked/unlocked.

ASC-ECU

Communicates with WCM via CAN. Sends the vehicle speed data.

Engine control module (ECM)

Communication with WCM via CAN. Send atmospheric pressure data.

TPMS transmitter

Measure tire pressure directly, then send radio frequency signal to WCM.

⁽¹⁾	Illuminates for tire pressure warning.

⁽²⁾	Flashes for about 1 minute and then continuously illuminated for TPMS malfunction warning.