Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CODE 01 DIAGNOSTIC PROCEDURE

STEP	INSPECTION	INDICATION	ACTION
1	Unfasten driver-side seat belt. (Buckle switch on.)	on	Go to next step.
1	Unfasten driver-side seat belt. (Buckle switch on.)	off	Measure voltage at instrument cluster terminal 2G. Is voltage 0 V ? If as specified, replace instrument cluster. If not as specified, inspect following parts. Buckle switch Wiring harness (Buckle switch-instrument cluster)
2	Fasten driver-side seat belt. (Buckle switch off.)	on	Measure voltage at instrument cluster terminal 2G. Is voltage B+ ? If as specified, replace instrument cluster. If not as specified, inspect following parts. Buckle switch Wiring harness (Buckle switch-instrument cluster)
2	Fasten driver-side seat belt. (Buckle switch off.)	off	Input signal to instrument cluster is okay.