DTC 42 - Operation Signal To Interlock Solenoid

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 42)

Courtesy of MAZDA MOTORS CORP.

DIAGNOSTIC PROCEDURE - DTC 42

INSPECTION	INDICATION	SITUATION	ACTION
Wait for 2 seconds after selecting DTC 42.	on (Turns on and off)	IG Key shall not move to lock. (Solenoid to be on for five seconds )	Interlock solenoid is okay.
Wait for 2 seconds after selecting DTC 42.	on (Turns on and off)	Other than stated above.	Measure voltage at instrument cluster terminal 3G. Is voltage B+ ? If as specified, replace instrument cluster. If not as specified, inspect following parts. Wiring harness (Instrument cluster - interlock solenoid)