DTC 18 - Ignition Key Illumination On/Off Signal

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Instrument Cluster Connector Terminals (DTC 18)

Courtesy of MAZDA MOTORS CORP.

DIAGNOSTIC PROCEDURE - DTC 18

INSPECTION	INDICATION	SITUATION	ACTION
Wait for 2 seconds after selecting DTC 18.	on (Turns on and off)	Ignition key illumination turns on and off three times .	Ignition key illumination is okay.
Wait for 2 seconds after selecting DTC 18.	on (Turns on and off)	Other than stated above.	Measure voltage at instrument cluster terminal 2A. Is voltage B+ ? If as specified, replace instrument cluster. If not as specified, inspect following parts. Ignition key illumination Wiring harness (Battery - ignition key illumination - instrument cluster)