Diagnostic Procedure

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Turn the light switch to the TNS position. Does the instrument cluster illumination turn on?	Yes	Troubleshooting completed.
1		No	Go to the next step.
2	Does the non-illumination include the entire instrument cluster?	Yes	Go to the next step.
2		No	Replace the instrument cluster.
3	Inspect the ROOM and ILLUMI fuse. Are the fuses normal?	Yes	Go to the next step.
3	Inspect the ROOM and ILLUMI fuse. Are the fuses normal?	No	Replace the fuse. If the fuse is melted, inspect the wiring harness for short to ground. Repair or replace the wiring harness, then replace the fuse.
4	Turn the ignition switch off. Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). Are the terminals normal? Courtesy of MAZDA MOTORS CORP.	Yes	Replace the instrument cluster.
4		No	Repair or replace the terminal.